mirror of
https://github.com/oxen-io/session-android.git
synced 2024-12-24 00:37:47 +00:00
Collapse SessionRecord, SessionState, and PreKeyRecord interfaces.
This commit is contained in:
Moxie Marlinspike
parent
5a3c19fe3e
commit
a601c56af1
70
libaxolotl/protobuf/LocalStorageProtocol.proto
Normal file
70
libaxolotl/protobuf/LocalStorageProtocol.proto
Normal file
@ -0,0 +1,70 @@
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package textsecure;
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option java_package = "org.whispersystems.libaxolotl.state";
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option java_outer_classname = "StorageProtos";
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message SessionStructure {
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message Chain {
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optional bytes senderEphemeral = 1;
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optional bytes senderEphemeralPrivate = 2;
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message ChainKey {
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optional uint32 index = 1;
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optional bytes key = 2;
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}
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optional ChainKey chainKey = 3;
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message MessageKey {
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optional uint32 index = 1;
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optional bytes cipherKey = 2;
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optional bytes macKey = 3;
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}
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repeated MessageKey messageKeys = 4;
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}
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message PendingKeyExchange {
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optional uint32 sequence = 1;
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optional bytes localBaseKey = 2;
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optional bytes localBaseKeyPrivate = 3;
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optional bytes localEphemeralKey = 4;
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optional bytes localEphemeralKeyPrivate = 5;
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optional bytes localIdentityKey = 7;
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optional bytes localIdentityKeyPrivate = 8;
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}
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message PendingPreKey {
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optional uint32 preKeyId = 1;
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optional bytes baseKey = 2;
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}
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optional uint32 sessionVersion = 1;
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optional bytes localIdentityPublic = 2;
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optional bytes remoteIdentityPublic = 3;
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optional bytes rootKey = 4;
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optional uint32 previousCounter = 5;
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optional Chain senderChain = 6;
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repeated Chain receiverChains = 7;
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optional PendingKeyExchange pendingKeyExchange = 8;
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optional PendingPreKey pendingPreKey = 9;
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optional uint32 remoteRegistrationId = 10;
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optional uint32 localRegistrationId = 11;
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optional bool needsRefresh = 12;
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}
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message RecordStructure {
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optional SessionStructure currentSession = 1;
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repeated SessionStructure previousSessions = 2;
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}
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message PreKeyRecordStructure {
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optional uint32 id = 1;
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optional bytes publicKey = 2;
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optional bytes privateKey = 3;
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}
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@ -1,3 +1,3 @@
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all:
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protoc --java_out=../src/main/java/ WhisperTextProtocol.proto
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protoc --java_out=../src/main/java/ WhisperTextProtocol.proto LocalStorageProtocol.proto
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@ -4,25 +4,30 @@ import org.whispersystems.libaxolotl.InvalidKeyIdException;
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import org.whispersystems.libaxolotl.state.PreKeyRecord;
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import org.whispersystems.libaxolotl.state.PreKeyStore;
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import java.io.IOException;
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import java.util.HashMap;
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import java.util.Map;
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public class InMemoryPreKeyStore implements PreKeyStore {
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private final Map<Integer, PreKeyRecord> store = new HashMap<>();
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private final Map<Integer, byte[]> store = new HashMap<>();
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@Override
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public PreKeyRecord load(int preKeyId) throws InvalidKeyIdException {
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if (!store.containsKey(preKeyId)) {
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throw new InvalidKeyIdException("No such prekeyrecord!");
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}
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try {
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if (!store.containsKey(preKeyId)) {
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throw new InvalidKeyIdException("No such prekeyrecord!");
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}
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return store.get(preKeyId);
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return new PreKeyRecord(store.get(preKeyId));
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} catch (IOException e) {
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throw new AssertionError(e);
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}
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}
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@Override
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public void store(int preKeyId, PreKeyRecord record) {
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store.put(preKeyId, record);
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store.put(preKeyId, record.serialize());
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}
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@Override
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@ -1,54 +0,0 @@
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package org.whispersystems.test;
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import org.whispersystems.libaxolotl.state.SessionRecord;
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import org.whispersystems.libaxolotl.state.SessionState;
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import java.util.LinkedList;
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import java.util.List;
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public class InMemorySessionRecord implements SessionRecord {
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private SessionState currentSessionState;
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private List<SessionState> previousSessionStates;
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public InMemorySessionRecord() {
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currentSessionState = new InMemorySessionState();
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previousSessionStates = new LinkedList<>();
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}
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public InMemorySessionRecord(SessionRecord copy) {
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currentSessionState = new InMemorySessionState(copy.getSessionState());
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previousSessionStates = new LinkedList<>();
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for (SessionState previousState : copy.getPreviousSessionStates()) {
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previousSessionStates.add(new InMemorySessionState(previousState));
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}
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}
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@Override
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public SessionState getSessionState() {
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return currentSessionState;
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}
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@Override
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public List<SessionState> getPreviousSessionStates() {
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return previousSessionStates;
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}
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@Override
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public void reset() {
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this.currentSessionState = new InMemorySessionState();
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this.previousSessionStates = new LinkedList<>();
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}
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@Override
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public void archiveCurrentState() {
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this.previousSessionStates.add(currentSessionState);
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this.currentSessionState = new InMemorySessionState();
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}
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@Override
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public byte[] serialize() {
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throw new AssertionError();
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}
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}
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@ -1,402 +0,0 @@
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package org.whispersystems.test;
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import org.whispersystems.libaxolotl.IdentityKey;
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import org.whispersystems.libaxolotl.IdentityKeyPair;
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import org.whispersystems.libaxolotl.InvalidKeyException;
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import org.whispersystems.libaxolotl.ecc.Curve;
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import org.whispersystems.libaxolotl.ecc.ECKeyPair;
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import org.whispersystems.libaxolotl.ecc.ECPrivateKey;
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import org.whispersystems.libaxolotl.ecc.ECPublicKey;
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import org.whispersystems.libaxolotl.ratchet.ChainKey;
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import org.whispersystems.libaxolotl.ratchet.MessageKeys;
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import org.whispersystems.libaxolotl.ratchet.RootKey;
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import org.whispersystems.libaxolotl.state.SessionState;
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import org.whispersystems.libaxolotl.util.Pair;
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import java.util.HashMap;
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import java.util.Iterator;
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import java.util.LinkedList;
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import java.util.List;
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import java.util.Map;
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import javax.crypto.spec.SecretKeySpec;
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public class InMemorySessionState implements SessionState {
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private Map<ECPublicKey, InMemoryChain> receiverChains = new HashMap<>();
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private boolean needsRefresh;
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private int sessionVersion;
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private IdentityKey remoteIdentityKey;
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private IdentityKey localIdentityKey;
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private int previousCounter;
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private RootKey rootKey;
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private ECKeyPair senderEphemeral;
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private ChainKey senderChainKey;
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private int pendingPreKeyid;
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private ECPublicKey pendingPreKey;
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private int remoteRegistrationId;
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private int localRegistrationId;
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private InMemoryPendingKeyExchange pendingKeyExchange;
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public InMemorySessionState() {}
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public InMemorySessionState(SessionState sessionState) {
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try {
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this.needsRefresh = sessionState.getNeedsRefresh();
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this.sessionVersion = sessionState.getSessionVersion();
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if (sessionState.getRemoteIdentityKey() != null) {
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this.remoteIdentityKey = new IdentityKey(sessionState.getRemoteIdentityKey().serialize(), 0);
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}
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if (sessionState.getLocalIdentityKey() != null) {
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this.localIdentityKey = new IdentityKey(sessionState.getLocalIdentityKey().serialize(), 0);
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}
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this.previousCounter = sessionState.getPreviousCounter();
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if (sessionState.getRootKey() != null) {
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this.rootKey = new RootKey(sessionState.getRootKey().getKeyBytes());
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}
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this.senderEphemeral = sessionState.getSenderEphemeralPair();
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if (sessionState.getSenderChainKey() != null) {
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this.senderChainKey = new ChainKey(sessionState.getSenderChainKey().getKey(),
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sessionState.getSenderChainKey().getIndex());
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}
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if (sessionState.getPendingPreKey() != null) {
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this.pendingPreKeyid = sessionState.getPendingPreKey().first();
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}
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if (sessionState.getPendingPreKey() != null) {
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this.pendingPreKey = sessionState.getPendingPreKey().second();
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}
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this.remoteRegistrationId = sessionState.getRemoteRegistrationId();
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this.localRegistrationId = sessionState.getLocalRegistrationId();
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if (sessionState.hasPendingKeyExchange()) {
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pendingKeyExchange = new InMemoryPendingKeyExchange();
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pendingKeyExchange.sequence = sessionState.getPendingKeyExchangeSequence();
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pendingKeyExchange.localBaseKey = sessionState.getPendingKeyExchangeBaseKey()
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.getPublicKey().serialize();
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pendingKeyExchange.localBaseKeyPrivate = sessionState.getPendingKeyExchangeBaseKey()
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.getPrivateKey().serialize();
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pendingKeyExchange.localEphemeralKey = sessionState.getPendingKeyExchangeEphemeralKey()
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.getPublicKey().serialize();
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pendingKeyExchange.localEphemeralKeyPrivate = sessionState.getPendingKeyExchangeEphemeralKey()
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.getPrivateKey().serialize();
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pendingKeyExchange.localIdentityKey = sessionState.getPendingKeyExchangeIdentityKey()
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.getPublicKey().serialize();
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pendingKeyExchange.localIdentityKeyPrivate = sessionState.getPendingKeyExchangeIdentityKey()
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.getPrivateKey().serialize();
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}
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for (ECPublicKey key : ((InMemorySessionState)sessionState).receiverChains.keySet()) {
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ECPublicKey chainKey = Curve.decodePoint(key.serialize(), 0);
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InMemoryChain ourChain = new InMemoryChain();
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InMemoryChain theirChain = ((InMemorySessionState)sessionState).receiverChains.get(key);
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ourChain.chainKey = theirChain.chainKey;
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ourChain.index = theirChain.index;
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ourChain.messageKeys = theirChain.messageKeys;
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receiverChains.put(chainKey, ourChain);
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}
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} catch (InvalidKeyException e) {
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throw new AssertionError(e);
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}
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}
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@Override
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public void setNeedsRefresh(boolean needsRefresh) {
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this.needsRefresh = needsRefresh;
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}
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@Override
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public boolean getNeedsRefresh() {
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return needsRefresh;
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}
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@Override
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public void setSessionVersion(int version) {
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this.sessionVersion = version;
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}
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@Override
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public int getSessionVersion() {
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return sessionVersion;
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}
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@Override
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public void setRemoteIdentityKey(IdentityKey identityKey) {
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this.remoteIdentityKey = identityKey;
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}
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@Override
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public void setLocalIdentityKey(IdentityKey identityKey) {
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this.localIdentityKey = identityKey;
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}
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@Override
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public IdentityKey getRemoteIdentityKey() {
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return remoteIdentityKey;
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}
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@Override
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public IdentityKey getLocalIdentityKey() {
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return localIdentityKey;
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}
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@Override
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public int getPreviousCounter() {
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return previousCounter;
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}
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@Override
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public void setPreviousCounter(int previousCounter) {
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this.previousCounter = previousCounter;
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}
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@Override
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public RootKey getRootKey() {
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return rootKey;
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}
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@Override
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public void setRootKey(RootKey rootKey) {
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this.rootKey = rootKey;
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}
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@Override
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public ECPublicKey getSenderEphemeral() {
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return senderEphemeral.getPublicKey();
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}
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@Override
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public ECKeyPair getSenderEphemeralPair() {
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return senderEphemeral;
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}
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@Override
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public boolean hasReceiverChain(ECPublicKey senderEphemeral) {
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return receiverChains.containsKey(senderEphemeral);
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}
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@Override
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public boolean hasSenderChain() {
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return senderChainKey != null;
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}
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@Override
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public ChainKey getReceiverChainKey(ECPublicKey senderEphemeral) {
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InMemoryChain chain = receiverChains.get(senderEphemeral);
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return new ChainKey(chain.chainKey, chain.index);
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}
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@Override
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public void addReceiverChain(ECPublicKey senderEphemeral, ChainKey chainKey) {
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InMemoryChain chain = new InMemoryChain();
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chain.chainKey = chainKey.getKey();
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chain.index = chainKey.getIndex();
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receiverChains.put(senderEphemeral, chain);
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}
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@Override
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public void setSenderChain(ECKeyPair senderEphemeralPair, ChainKey chainKey) {
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this.senderEphemeral = senderEphemeralPair;
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this.senderChainKey = chainKey;
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}
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@Override
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public ChainKey getSenderChainKey() {
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return senderChainKey;
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}
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@Override
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public void setSenderChainKey(ChainKey nextChainKey) {
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this.senderChainKey = nextChainKey;
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}
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@Override
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public boolean hasMessageKeys(ECPublicKey senderEphemeral, int counter) {
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InMemoryChain chain = receiverChains.get(senderEphemeral);
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if (chain == null) return false;
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for (InMemoryChain.InMemoryMessageKey messageKey : chain.messageKeys) {
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if (messageKey.index == counter) {
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return true;
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}
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}
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return false;
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}
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@Override
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public MessageKeys removeMessageKeys(ECPublicKey senderEphemeral, int counter) {
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InMemoryChain chain = receiverChains.get(senderEphemeral);
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MessageKeys results = null;
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if (chain == null) return null;
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Iterator<InMemoryChain.InMemoryMessageKey> iterator = chain.messageKeys.iterator();
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while (iterator.hasNext()) {
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InMemoryChain.InMemoryMessageKey messageKey = iterator.next();
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if (messageKey.index == counter) {
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results = new MessageKeys(new SecretKeySpec(messageKey.cipherKey, "AES"),
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new SecretKeySpec(messageKey.macKey, "HmacSHA256"),
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messageKey.index);
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iterator.remove();
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break;
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}
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}
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return results;
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}
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@Override
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public void setMessageKeys(ECPublicKey senderEphemeral, MessageKeys messageKeys) {
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InMemoryChain chain = receiverChains.get(senderEphemeral);
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InMemoryChain.InMemoryMessageKey key = new InMemoryChain.InMemoryMessageKey();
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key.cipherKey = messageKeys.getCipherKey().getEncoded();
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key.macKey = messageKeys.getMacKey().getEncoded();
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key.index = messageKeys.getCounter();
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chain.messageKeys.add(key);
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}
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@Override
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public void setReceiverChainKey(ECPublicKey senderEphemeral, ChainKey chainKey) {
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InMemoryChain chain = receiverChains.get(senderEphemeral);
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chain.chainKey = chainKey.getKey();
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chain.index = chainKey.getIndex();
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}
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@Override
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public void setPendingKeyExchange(int sequence, ECKeyPair ourBaseKey, ECKeyPair ourEphemeralKey,
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IdentityKeyPair ourIdentityKey)
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{
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pendingKeyExchange = new InMemoryPendingKeyExchange();
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pendingKeyExchange.sequence = sequence;
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pendingKeyExchange.localBaseKey = ourBaseKey.getPublicKey().serialize();
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pendingKeyExchange.localBaseKeyPrivate = ourBaseKey.getPrivateKey().serialize();
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pendingKeyExchange.localEphemeralKey = ourEphemeralKey.getPublicKey().serialize();
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pendingKeyExchange.localEphemeralKeyPrivate = ourEphemeralKey.getPrivateKey().serialize();
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pendingKeyExchange.localIdentityKey = ourIdentityKey.getPublicKey().serialize();
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pendingKeyExchange.localIdentityKeyPrivate = ourIdentityKey.getPrivateKey().serialize();
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}
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@Override
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public int getPendingKeyExchangeSequence() {
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return pendingKeyExchange == null ? 0 : pendingKeyExchange.sequence;
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}
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@Override
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public ECKeyPair getPendingKeyExchangeBaseKey() throws InvalidKeyException {
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ECPublicKey publicKey = Curve.decodePoint(pendingKeyExchange.localBaseKey, 0);
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ECPrivateKey privateKey = Curve.decodePrivatePoint(pendingKeyExchange.localBaseKeyPrivate);
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return new ECKeyPair(publicKey, privateKey);
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}
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@Override
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public ECKeyPair getPendingKeyExchangeEphemeralKey() throws InvalidKeyException {
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ECPublicKey publicKey = Curve.decodePoint(pendingKeyExchange.localEphemeralKey, 0);
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ECPrivateKey privateKey = Curve.decodePrivatePoint(pendingKeyExchange.localEphemeralKeyPrivate);
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return new ECKeyPair(publicKey, privateKey);
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}
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@Override
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public IdentityKeyPair getPendingKeyExchangeIdentityKey() throws InvalidKeyException {
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IdentityKey publicKey = new IdentityKey(pendingKeyExchange.localIdentityKey, 0);
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ECPrivateKey privateKey = Curve.decodePrivatePoint(pendingKeyExchange.localIdentityKeyPrivate);
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return new IdentityKeyPair(publicKey, privateKey);
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}
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@Override
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public boolean hasPendingKeyExchange() {
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return pendingKeyExchange != null;
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}
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@Override
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public void setPendingPreKey(int preKeyId, ECPublicKey baseKey) {
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this.pendingPreKeyid = preKeyId;
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this.pendingPreKey = baseKey;
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}
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@Override
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public boolean hasPendingPreKey() {
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return this.pendingPreKey != null;
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}
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||||
|
||||
@Override
|
||||
public Pair<Integer, ECPublicKey> getPendingPreKey() {
|
||||
return new Pair<>(pendingPreKeyid, pendingPreKey);
|
||||
}
|
||||
|
||||
@Override
|
||||
public void clearPendingPreKey() {
|
||||
this.pendingPreKey = null;
|
||||
this.pendingPreKeyid = -1;
|
||||
}
|
||||
|
||||
@Override
|
||||
public void setRemoteRegistrationId(int registrationId) {
|
||||
this.remoteRegistrationId = registrationId;
|
||||
}
|
||||
|
||||
@Override
|
||||
public int getRemoteRegistrationId() {
|
||||
return remoteRegistrationId;
|
||||
}
|
||||
|
||||
@Override
|
||||
public void setLocalRegistrationId(int registrationId) {
|
||||
this.localRegistrationId = registrationId;
|
||||
}
|
||||
|
||||
@Override
|
||||
public int getLocalRegistrationId() {
|
||||
return localRegistrationId;
|
||||
}
|
||||
|
||||
@Override
|
||||
public byte[] serialize() {
|
||||
throw new AssertionError();
|
||||
}
|
||||
|
||||
private static class InMemoryChain {
|
||||
byte[] chainKey;
|
||||
int index;
|
||||
List<InMemoryMessageKey> messageKeys = new LinkedList<>();
|
||||
|
||||
public static class InMemoryMessageKey {
|
||||
public InMemoryMessageKey(){}
|
||||
int index;
|
||||
byte[] cipherKey;
|
||||
byte[] macKey;
|
||||
}
|
||||
}
|
||||
|
||||
private static class InMemoryPendingKeyExchange {
|
||||
int sequence;
|
||||
byte[] localBaseKey;
|
||||
byte[] localBaseKeyPrivate;
|
||||
byte[] localEphemeralKey;
|
||||
byte[] localEphemeralKeyPrivate;
|
||||
byte[] localIdentityKey;
|
||||
byte[] localIdentityKeyPrivate;
|
||||
}
|
||||
}
|
||||
@ -4,6 +4,7 @@ import org.whispersystems.libaxolotl.state.SessionRecord;
|
||||
import org.whispersystems.libaxolotl.state.SessionStore;
|
||||
import org.whispersystems.libaxolotl.util.Pair;
|
||||
|
||||
import java.io.IOException;
|
||||
import java.util.HashMap;
|
||||
import java.util.LinkedList;
|
||||
import java.util.List;
|
||||
@ -11,16 +12,20 @@ import java.util.Map;
|
||||
|
||||
public class InMemorySessionStore implements SessionStore {
|
||||
|
||||
private Map<Pair<Long, Integer>, SessionRecord> sessions = new HashMap<>();
|
||||
private Map<Pair<Long, Integer>, byte[]> sessions = new HashMap<>();
|
||||
|
||||
public InMemorySessionStore() {}
|
||||
|
||||
@Override
|
||||
public synchronized SessionRecord load(long recipientId, int deviceId) {
|
||||
if (contains(recipientId, deviceId)) {
|
||||
return new InMemorySessionRecord(sessions.get(new Pair<>(recipientId, deviceId)));
|
||||
} else {
|
||||
return new InMemorySessionRecord();
|
||||
try {
|
||||
if (contains(recipientId, deviceId)) {
|
||||
return new SessionRecord(sessions.get(new Pair<>(recipientId, deviceId)));
|
||||
} else {
|
||||
return new SessionRecord();
|
||||
}
|
||||
} catch (IOException e) {
|
||||
throw new AssertionError(e);
|
||||
}
|
||||
}
|
||||
|
||||
@ -39,7 +44,7 @@ public class InMemorySessionStore implements SessionStore {
|
||||
|
||||
@Override
|
||||
public synchronized void store(long recipientId, int deviceId, SessionRecord record) {
|
||||
sessions.put(new Pair<>(recipientId, deviceId), record);
|
||||
sessions.put(new Pair<>(recipientId, deviceId), record.serialize());
|
||||
}
|
||||
|
||||
@Override
|
||||
|
||||
@ -220,16 +220,13 @@ public class SessionBuilderTest extends AndroidTestCase {
|
||||
}
|
||||
}
|
||||
|
||||
private class InMemoryPreKey implements PreKey, PreKeyRecord {
|
||||
private class InMemoryPreKey extends PreKeyRecord implements PreKey {
|
||||
|
||||
private final int keyId;
|
||||
private final ECKeyPair keyPair;
|
||||
private final IdentityKey identityKey;
|
||||
private final int registrationId;
|
||||
|
||||
public InMemoryPreKey(int keyId, ECKeyPair keyPair, IdentityKey identityKey, int registrationId) {
|
||||
this.keyId = keyId;
|
||||
this.keyPair = keyPair;
|
||||
super(keyId, keyPair);
|
||||
this.identityKey = identityKey;
|
||||
this.registrationId = registrationId;
|
||||
}
|
||||
@ -241,12 +238,12 @@ public class SessionBuilderTest extends AndroidTestCase {
|
||||
|
||||
@Override
|
||||
public int getKeyId() {
|
||||
return keyId;
|
||||
return getId();
|
||||
}
|
||||
|
||||
@Override
|
||||
public ECPublicKey getPublicKey() {
|
||||
return keyPair.getPublicKey();
|
||||
return getKeyPair().getPublicKey();
|
||||
}
|
||||
|
||||
@Override
|
||||
@ -258,21 +255,6 @@ public class SessionBuilderTest extends AndroidTestCase {
|
||||
public int getRegistrationId() {
|
||||
return registrationId;
|
||||
}
|
||||
|
||||
@Override
|
||||
public int getId() {
|
||||
return keyId;
|
||||
}
|
||||
|
||||
@Override
|
||||
public ECKeyPair getKeyPair() {
|
||||
return keyPair;
|
||||
}
|
||||
|
||||
@Override
|
||||
public byte[] serialize() {
|
||||
throw new AssertionError("nyi");
|
||||
}
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
@ -25,8 +25,8 @@ public class SessionCipherTest extends AndroidTestCase {
|
||||
throws InvalidKeyException, DuplicateMessageException,
|
||||
LegacyMessageException, InvalidMessageException
|
||||
{
|
||||
SessionRecord aliceSessionRecord = new InMemorySessionRecord();
|
||||
SessionRecord bobSessionRecord = new InMemorySessionRecord();
|
||||
SessionRecord aliceSessionRecord = new SessionRecord();
|
||||
SessionRecord bobSessionRecord = new SessionRecord();
|
||||
|
||||
initializeSessions(aliceSessionRecord.getSessionState(), bobSessionRecord.getSessionState());
|
||||
|
||||
|
||||
@ -4,7 +4,6 @@ import android.test.AndroidTestCase;
|
||||
|
||||
import org.whispersystems.libaxolotl.IdentityKey;
|
||||
import org.whispersystems.libaxolotl.IdentityKeyPair;
|
||||
import org.whispersystems.test.InMemorySessionState;
|
||||
import org.whispersystems.libaxolotl.InvalidKeyException;
|
||||
import org.whispersystems.libaxolotl.state.SessionState;
|
||||
import org.whispersystems.libaxolotl.ecc.Curve;
|
||||
@ -106,7 +105,7 @@ public class RatchetingSessionTest extends AndroidTestCase {
|
||||
ECPublicKey aliceEphemeralPublicKey = Curve.decodePoint(aliceEphemeralPublic, 0);
|
||||
IdentityKey aliceIdentityPublicKey = new IdentityKey(aliceIdentityPublic, 0);
|
||||
|
||||
SessionState session = new InMemorySessionState();
|
||||
SessionState session = new SessionState();
|
||||
|
||||
RatchetingSession.initializeSession(session, bobBaseKey, aliceBasePublicKey,
|
||||
bobEphemeralKey, aliceEphemeralPublicKey,
|
||||
@ -203,7 +202,7 @@ public class RatchetingSessionTest extends AndroidTestCase {
|
||||
ECPrivateKey aliceIdentityPrivateKey = Curve.decodePrivatePoint(aliceIdentityPrivate);
|
||||
IdentityKeyPair aliceIdentityKey = new IdentityKeyPair(aliceIdentityPublicKey, aliceIdentityPrivateKey);
|
||||
|
||||
SessionState session = new InMemorySessionState();
|
||||
SessionState session = new SessionState();
|
||||
|
||||
RatchetingSession.initializeSession(session, aliceBaseKey, bobBasePublicKey,
|
||||
aliceEphemeralKey, bobEphemeralPublicKey,
|
||||
|
||||
@ -1,25 +1,51 @@
|
||||
package org.whispersystems.libaxolotl.state;
|
||||
|
||||
import com.google.protobuf.ByteString;
|
||||
|
||||
import org.whispersystems.libaxolotl.InvalidKeyException;
|
||||
import org.whispersystems.libaxolotl.ecc.Curve;
|
||||
import org.whispersystems.libaxolotl.ecc.ECKeyPair;
|
||||
import org.whispersystems.libaxolotl.ecc.ECPrivateKey;
|
||||
import org.whispersystems.libaxolotl.ecc.ECPublicKey;
|
||||
|
||||
/**
|
||||
* An interface describing a locally stored PreKey.
|
||||
*
|
||||
* @author Moxie Marlinspike
|
||||
*/
|
||||
public interface PreKeyRecord {
|
||||
/**
|
||||
* @return the PreKey's ID.
|
||||
*/
|
||||
public int getId();
|
||||
import java.io.IOException;
|
||||
|
||||
/**
|
||||
* @return the PreKey's key pair.
|
||||
*/
|
||||
public ECKeyPair getKeyPair();
|
||||
import static org.whispersystems.libaxolotl.state.StorageProtos.PreKeyRecordStructure;
|
||||
|
||||
/**
|
||||
* @return a serialized version of this PreKey.
|
||||
*/
|
||||
public byte[] serialize();
|
||||
public class PreKeyRecord {
|
||||
|
||||
private PreKeyRecordStructure structure;
|
||||
|
||||
public PreKeyRecord(int id, ECKeyPair keyPair) {
|
||||
this.structure = PreKeyRecordStructure.newBuilder()
|
||||
.setId(id)
|
||||
.setPublicKey(ByteString.copyFrom(keyPair.getPublicKey()
|
||||
.serialize()))
|
||||
.setPrivateKey(ByteString.copyFrom(keyPair.getPrivateKey()
|
||||
.serialize()))
|
||||
.build();
|
||||
}
|
||||
|
||||
public PreKeyRecord(byte[] serialized) throws IOException {
|
||||
this.structure = PreKeyRecordStructure.parseFrom(serialized);
|
||||
}
|
||||
|
||||
public int getId() {
|
||||
return this.structure.getId();
|
||||
}
|
||||
|
||||
public ECKeyPair getKeyPair() {
|
||||
try {
|
||||
ECPublicKey publicKey = Curve.decodePoint(this.structure.getPublicKey().toByteArray(), 0);
|
||||
ECPrivateKey privateKey = Curve.decodePrivatePoint(this.structure.getPrivateKey().toByteArray());
|
||||
|
||||
return new ECKeyPair(publicKey, privateKey);
|
||||
} catch (InvalidKeyException e) {
|
||||
throw new AssertionError(e);
|
||||
}
|
||||
}
|
||||
|
||||
public byte[] serialize() {
|
||||
return this.structure.toByteArray();
|
||||
}
|
||||
}
|
||||
|
||||
@ -1,45 +1,84 @@
|
||||
package org.whispersystems.libaxolotl.state;
|
||||
|
||||
import java.io.IOException;
|
||||
import java.util.LinkedList;
|
||||
import java.util.List;
|
||||
|
||||
import static org.whispersystems.libaxolotl.state.StorageProtos.RecordStructure;
|
||||
import static org.whispersystems.libaxolotl.state.StorageProtos.SessionStructure;
|
||||
|
||||
/**
|
||||
* A SessionRecord encapsulates the state of an ongoing session.
|
||||
* <p>
|
||||
* It contains the current {@link org.whispersystems.libaxolotl.state.SessionState},
|
||||
* in addition to previous {@link SessionState}s for the same recipient, which need
|
||||
* to be maintained in some situations.
|
||||
*
|
||||
* @author Moxie Marlinspike
|
||||
*/
|
||||
public interface SessionRecord {
|
||||
public class SessionRecord {
|
||||
|
||||
/**
|
||||
* @return the current {@link org.whispersystems.libaxolotl.state.SessionState}
|
||||
*/
|
||||
public SessionState getSessionState();
|
||||
private SessionState sessionState = new SessionState();
|
||||
private List<SessionState> previousStates = new LinkedList<>();
|
||||
|
||||
public SessionRecord() {}
|
||||
|
||||
public SessionRecord(SessionState sessionState) {
|
||||
this.sessionState = sessionState;
|
||||
}
|
||||
|
||||
public SessionRecord(byte[] serialized) throws IOException {
|
||||
RecordStructure record = RecordStructure.parseFrom(serialized);
|
||||
this.sessionState = new SessionState(record.getCurrentSession());
|
||||
|
||||
for (SessionStructure previousStructure : record.getPreviousSessionsList()) {
|
||||
previousStates.add(new SessionState(previousStructure));
|
||||
}
|
||||
}
|
||||
|
||||
public SessionState getSessionState() {
|
||||
return sessionState;
|
||||
}
|
||||
|
||||
/**
|
||||
* @return the list of all currently maintained "previous" session states.
|
||||
*/
|
||||
public List<SessionState> getPreviousSessionStates();
|
||||
public List<SessionState> getPreviousSessionStates() {
|
||||
return previousStates;
|
||||
}
|
||||
|
||||
/**
|
||||
* Reset the current SessionRecord, clearing all "previous" session states,
|
||||
* and resetting the current {@link org.whispersystems.libaxolotl.state.SessionState}
|
||||
* to a fresh state.
|
||||
*/
|
||||
public void reset();
|
||||
public void reset() {
|
||||
this.sessionState = new SessionState();
|
||||
this.previousStates = new LinkedList<>();
|
||||
}
|
||||
|
||||
/**
|
||||
* Move the current {@link SessionState} into the list of "previous" session states,
|
||||
* and replace the current {@link org.whispersystems.libaxolotl.state.SessionState}
|
||||
* with a fresh reset instance.
|
||||
*/
|
||||
public void archiveCurrentState();
|
||||
public void archiveCurrentState() {
|
||||
this.previousStates.add(sessionState);
|
||||
this.sessionState = new SessionState();
|
||||
}
|
||||
|
||||
/**
|
||||
* @return a serialized version of the current SessionRecord.
|
||||
*/
|
||||
public byte[] serialize();
|
||||
public byte[] serialize() {
|
||||
List<SessionStructure> previousStructures = new LinkedList<>();
|
||||
|
||||
for (SessionState previousState : previousStates) {
|
||||
previousStructures.add(previousState.getStructure());
|
||||
}
|
||||
|
||||
RecordStructure record = RecordStructure.newBuilder()
|
||||
.setCurrentSession(sessionState.getStructure())
|
||||
.addAllPreviousSessions(previousStructures)
|
||||
.build();
|
||||
|
||||
return record.toByteArray();
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
@ -1,62 +1,453 @@
|
||||
/**
|
||||
* Copyright (C) 2014 Open Whisper Systems
|
||||
*
|
||||
* This program is free software: you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation, either version 3 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
*/
|
||||
|
||||
package org.whispersystems.libaxolotl.state;
|
||||
|
||||
import android.util.Log;
|
||||
|
||||
import com.google.protobuf.ByteString;
|
||||
|
||||
import org.whispersystems.libaxolotl.IdentityKey;
|
||||
import org.whispersystems.libaxolotl.IdentityKeyPair;
|
||||
import org.whispersystems.libaxolotl.InvalidKeyException;
|
||||
import org.whispersystems.libaxolotl.ecc.Curve;
|
||||
import org.whispersystems.libaxolotl.ecc.ECKeyPair;
|
||||
import org.whispersystems.libaxolotl.ecc.ECPrivateKey;
|
||||
import org.whispersystems.libaxolotl.ecc.ECPublicKey;
|
||||
import org.whispersystems.libaxolotl.ratchet.ChainKey;
|
||||
import org.whispersystems.libaxolotl.ratchet.MessageKeys;
|
||||
import org.whispersystems.libaxolotl.ratchet.RootKey;
|
||||
import org.whispersystems.libaxolotl.util.Pair;
|
||||
import org.whispersystems.libaxolotl.state.StorageProtos.SessionStructure.Chain;
|
||||
import org.whispersystems.libaxolotl.state.StorageProtos.SessionStructure.PendingKeyExchange;
|
||||
import org.whispersystems.libaxolotl.state.StorageProtos.SessionStructure.PendingPreKey;
|
||||
|
||||
import java.util.Iterator;
|
||||
import java.util.LinkedList;
|
||||
import java.util.List;
|
||||
|
||||
import javax.crypto.spec.SecretKeySpec;
|
||||
|
||||
import static org.whispersystems.libaxolotl.state.StorageProtos.SessionStructure;
|
||||
|
||||
public class SessionState {
|
||||
|
||||
private SessionStructure sessionStructure;
|
||||
|
||||
public SessionState() {
|
||||
this.sessionStructure = SessionStructure.newBuilder().build();
|
||||
}
|
||||
|
||||
public SessionState(SessionStructure sessionStructure) {
|
||||
this.sessionStructure = sessionStructure;
|
||||
}
|
||||
|
||||
public SessionStructure getStructure() {
|
||||
return sessionStructure;
|
||||
}
|
||||
|
||||
public void setNeedsRefresh(boolean needsRefresh) {
|
||||
this.sessionStructure = this.sessionStructure.toBuilder()
|
||||
.setNeedsRefresh(needsRefresh)
|
||||
.build();
|
||||
}
|
||||
|
||||
public boolean getNeedsRefresh() {
|
||||
return this.sessionStructure.getNeedsRefresh();
|
||||
}
|
||||
|
||||
public void setSessionVersion(int version) {
|
||||
this.sessionStructure = this.sessionStructure.toBuilder()
|
||||
.setSessionVersion(version)
|
||||
.build();
|
||||
}
|
||||
|
||||
public int getSessionVersion() {
|
||||
return this.sessionStructure.getSessionVersion();
|
||||
}
|
||||
|
||||
public void setRemoteIdentityKey(IdentityKey identityKey) {
|
||||
this.sessionStructure = this.sessionStructure.toBuilder()
|
||||
.setRemoteIdentityPublic(ByteString.copyFrom(identityKey.serialize()))
|
||||
.build();
|
||||
}
|
||||
|
||||
public void setLocalIdentityKey(IdentityKey identityKey) {
|
||||
this.sessionStructure = this.sessionStructure.toBuilder()
|
||||
.setLocalIdentityPublic(ByteString.copyFrom(identityKey.serialize()))
|
||||
.build();
|
||||
}
|
||||
|
||||
public IdentityKey getRemoteIdentityKey() {
|
||||
try {
|
||||
if (!this.sessionStructure.hasRemoteIdentityPublic()) {
|
||||
return null;
|
||||
}
|
||||
|
||||
return new IdentityKey(this.sessionStructure.getRemoteIdentityPublic().toByteArray(), 0);
|
||||
} catch (InvalidKeyException e) {
|
||||
Log.w("SessionRecordV2", e);
|
||||
return null;
|
||||
}
|
||||
}
|
||||
|
||||
public IdentityKey getLocalIdentityKey() {
|
||||
try {
|
||||
return new IdentityKey(this.sessionStructure.getLocalIdentityPublic().toByteArray(), 0);
|
||||
} catch (InvalidKeyException e) {
|
||||
throw new AssertionError(e);
|
||||
}
|
||||
}
|
||||
|
||||
public int getPreviousCounter() {
|
||||
return sessionStructure.getPreviousCounter();
|
||||
}
|
||||
|
||||
public void setPreviousCounter(int previousCounter) {
|
||||
this.sessionStructure = this.sessionStructure.toBuilder()
|
||||
.setPreviousCounter(previousCounter)
|
||||
.build();
|
||||
}
|
||||
|
||||
public RootKey getRootKey() {
|
||||
return new RootKey(this.sessionStructure.getRootKey().toByteArray());
|
||||
}
|
||||
|
||||
public void setRootKey(RootKey rootKey) {
|
||||
this.sessionStructure = this.sessionStructure.toBuilder()
|
||||
.setRootKey(ByteString.copyFrom(rootKey.getKeyBytes()))
|
||||
.build();
|
||||
}
|
||||
|
||||
public ECPublicKey getSenderEphemeral() {
|
||||
try {
|
||||
return Curve.decodePoint(sessionStructure.getSenderChain().getSenderEphemeral().toByteArray(), 0);
|
||||
} catch (InvalidKeyException e) {
|
||||
throw new AssertionError(e);
|
||||
}
|
||||
}
|
||||
|
||||
public ECKeyPair getSenderEphemeralPair() {
|
||||
ECPublicKey publicKey = getSenderEphemeral();
|
||||
ECPrivateKey privateKey = Curve.decodePrivatePoint(sessionStructure.getSenderChain()
|
||||
.getSenderEphemeralPrivate()
|
||||
.toByteArray());
|
||||
|
||||
return new ECKeyPair(publicKey, privateKey);
|
||||
}
|
||||
|
||||
public boolean hasReceiverChain(ECPublicKey senderEphemeral) {
|
||||
return getReceiverChain(senderEphemeral) != null;
|
||||
}
|
||||
|
||||
public boolean hasSenderChain() {
|
||||
return sessionStructure.hasSenderChain();
|
||||
}
|
||||
|
||||
private Pair<Chain,Integer> getReceiverChain(ECPublicKey senderEphemeral) {
|
||||
List<Chain> receiverChains = sessionStructure.getReceiverChainsList();
|
||||
int index = 0;
|
||||
|
||||
for (Chain receiverChain : receiverChains) {
|
||||
try {
|
||||
ECPublicKey chainSenderEphemeral = Curve.decodePoint(receiverChain.getSenderEphemeral().toByteArray(), 0);
|
||||
|
||||
if (chainSenderEphemeral.equals(senderEphemeral)) {
|
||||
return new Pair<Chain,Integer>(receiverChain,index);
|
||||
}
|
||||
} catch (InvalidKeyException e) {
|
||||
Log.w("SessionRecordV2", e);
|
||||
}
|
||||
|
||||
index++;
|
||||
}
|
||||
|
||||
return null;
|
||||
}
|
||||
|
||||
public ChainKey getReceiverChainKey(ECPublicKey senderEphemeral) {
|
||||
Pair<Chain,Integer> receiverChainAndIndex = getReceiverChain(senderEphemeral);
|
||||
Chain receiverChain = receiverChainAndIndex.first();
|
||||
|
||||
if (receiverChain == null) {
|
||||
return null;
|
||||
} else {
|
||||
return new ChainKey(receiverChain.getChainKey().getKey().toByteArray(),
|
||||
receiverChain.getChainKey().getIndex());
|
||||
}
|
||||
}
|
||||
|
||||
public void addReceiverChain(ECPublicKey senderEphemeral, ChainKey chainKey) {
|
||||
Chain.ChainKey chainKeyStructure = Chain.ChainKey.newBuilder()
|
||||
.setKey(ByteString.copyFrom(chainKey.getKey()))
|
||||
.setIndex(chainKey.getIndex())
|
||||
.build();
|
||||
|
||||
Chain chain = Chain.newBuilder()
|
||||
.setChainKey(chainKeyStructure)
|
||||
.setSenderEphemeral(ByteString.copyFrom(senderEphemeral.serialize()))
|
||||
.build();
|
||||
|
||||
this.sessionStructure = this.sessionStructure.toBuilder().addReceiverChains(chain).build();
|
||||
|
||||
if (this.sessionStructure.getReceiverChainsList().size() > 5) {
|
||||
this.sessionStructure = this.sessionStructure.toBuilder()
|
||||
.removeReceiverChains(0)
|
||||
.build();
|
||||
}
|
||||
}
|
||||
|
||||
public void setSenderChain(ECKeyPair senderEphemeralPair, ChainKey chainKey) {
|
||||
Chain.ChainKey chainKeyStructure = Chain.ChainKey.newBuilder()
|
||||
.setKey(ByteString.copyFrom(chainKey.getKey()))
|
||||
.setIndex(chainKey.getIndex())
|
||||
.build();
|
||||
|
||||
Chain senderChain = Chain.newBuilder()
|
||||
.setSenderEphemeral(ByteString.copyFrom(senderEphemeralPair.getPublicKey().serialize()))
|
||||
.setSenderEphemeralPrivate(ByteString.copyFrom(senderEphemeralPair.getPrivateKey().serialize()))
|
||||
.setChainKey(chainKeyStructure)
|
||||
.build();
|
||||
|
||||
this.sessionStructure = this.sessionStructure.toBuilder().setSenderChain(senderChain).build();
|
||||
}
|
||||
|
||||
public ChainKey getSenderChainKey() {
|
||||
Chain.ChainKey chainKeyStructure = sessionStructure.getSenderChain().getChainKey();
|
||||
return new ChainKey(chainKeyStructure.getKey().toByteArray(), chainKeyStructure.getIndex());
|
||||
}
|
||||
|
||||
|
||||
public void setSenderChainKey(ChainKey nextChainKey) {
|
||||
Chain.ChainKey chainKey = Chain.ChainKey.newBuilder()
|
||||
.setKey(ByteString.copyFrom(nextChainKey.getKey()))
|
||||
.setIndex(nextChainKey.getIndex())
|
||||
.build();
|
||||
|
||||
Chain chain = sessionStructure.getSenderChain().toBuilder()
|
||||
.setChainKey(chainKey).build();
|
||||
|
||||
this.sessionStructure = this.sessionStructure.toBuilder().setSenderChain(chain).build();
|
||||
}
|
||||
|
||||
public boolean hasMessageKeys(ECPublicKey senderEphemeral, int counter) {
|
||||
Pair<Chain,Integer> chainAndIndex = getReceiverChain(senderEphemeral);
|
||||
Chain chain = chainAndIndex.first();
|
||||
|
||||
if (chain == null) {
|
||||
return false;
|
||||
}
|
||||
|
||||
List<Chain.MessageKey> messageKeyList = chain.getMessageKeysList();
|
||||
|
||||
for (Chain.MessageKey messageKey : messageKeyList) {
|
||||
if (messageKey.getIndex() == counter) {
|
||||
return true;
|
||||
}
|
||||
}
|
||||
|
||||
return false;
|
||||
}
|
||||
|
||||
public MessageKeys removeMessageKeys(ECPublicKey senderEphemeral, int counter) {
|
||||
Pair<Chain,Integer> chainAndIndex = getReceiverChain(senderEphemeral);
|
||||
Chain chain = chainAndIndex.first();
|
||||
|
||||
if (chain == null) {
|
||||
return null;
|
||||
}
|
||||
|
||||
List<Chain.MessageKey> messageKeyList = new LinkedList<Chain.MessageKey>(chain.getMessageKeysList());
|
||||
Iterator<Chain.MessageKey> messageKeyIterator = messageKeyList.iterator();
|
||||
MessageKeys result = null;
|
||||
|
||||
while (messageKeyIterator.hasNext()) {
|
||||
Chain.MessageKey messageKey = messageKeyIterator.next();
|
||||
|
||||
if (messageKey.getIndex() == counter) {
|
||||
result = new MessageKeys(new SecretKeySpec(messageKey.getCipherKey().toByteArray(), "AES"),
|
||||
new SecretKeySpec(messageKey.getMacKey().toByteArray(), "HmacSHA256"),
|
||||
messageKey.getIndex());
|
||||
|
||||
messageKeyIterator.remove();
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
Chain updatedChain = chain.toBuilder().clearMessageKeys()
|
||||
.addAllMessageKeys(messageKeyList)
|
||||
.build();
|
||||
|
||||
this.sessionStructure = this.sessionStructure.toBuilder()
|
||||
.setReceiverChains(chainAndIndex.second(), updatedChain)
|
||||
.build();
|
||||
|
||||
return result;
|
||||
}
|
||||
|
||||
public void setMessageKeys(ECPublicKey senderEphemeral, MessageKeys messageKeys) {
|
||||
Pair<Chain,Integer> chainAndIndex = getReceiverChain(senderEphemeral);
|
||||
Chain chain = chainAndIndex.first();
|
||||
Chain.MessageKey messageKeyStructure = Chain.MessageKey.newBuilder()
|
||||
.setCipherKey(ByteString.copyFrom(messageKeys.getCipherKey().getEncoded()))
|
||||
.setMacKey(ByteString.copyFrom(messageKeys.getMacKey().getEncoded()))
|
||||
.setIndex(messageKeys.getCounter())
|
||||
.build();
|
||||
|
||||
Chain updatedChain = chain.toBuilder()
|
||||
.addMessageKeys(messageKeyStructure)
|
||||
.build();
|
||||
|
||||
this.sessionStructure = this.sessionStructure.toBuilder()
|
||||
.setReceiverChains(chainAndIndex.second(), updatedChain)
|
||||
.build();
|
||||
}
|
||||
|
||||
public void setReceiverChainKey(ECPublicKey senderEphemeral, ChainKey chainKey) {
|
||||
Pair<Chain,Integer> chainAndIndex = getReceiverChain(senderEphemeral);
|
||||
Chain chain = chainAndIndex.first();
|
||||
|
||||
Chain.ChainKey chainKeyStructure = Chain.ChainKey.newBuilder()
|
||||
.setKey(ByteString.copyFrom(chainKey.getKey()))
|
||||
.setIndex(chainKey.getIndex())
|
||||
.build();
|
||||
|
||||
Chain updatedChain = chain.toBuilder().setChainKey(chainKeyStructure).build();
|
||||
|
||||
this.sessionStructure = this.sessionStructure.toBuilder()
|
||||
.setReceiverChains(chainAndIndex.second(), updatedChain)
|
||||
.build();
|
||||
}
|
||||
|
||||
/**
|
||||
* The current session state.
|
||||
*
|
||||
* @author Moxie Marlinspike
|
||||
*/
|
||||
public interface SessionState {
|
||||
public void setNeedsRefresh(boolean needsRefresh);
|
||||
public boolean getNeedsRefresh();
|
||||
public void setSessionVersion(int version);
|
||||
public int getSessionVersion();
|
||||
public void setRemoteIdentityKey(IdentityKey identityKey);
|
||||
public void setLocalIdentityKey(IdentityKey identityKey);
|
||||
public IdentityKey getRemoteIdentityKey();
|
||||
public IdentityKey getLocalIdentityKey();
|
||||
public int getPreviousCounter();
|
||||
public void setPreviousCounter(int previousCounter);
|
||||
public RootKey getRootKey();
|
||||
public void setRootKey(RootKey rootKey);
|
||||
public ECPublicKey getSenderEphemeral();
|
||||
public ECKeyPair getSenderEphemeralPair();
|
||||
public boolean hasReceiverChain(ECPublicKey senderEphemeral);
|
||||
public boolean hasSenderChain();
|
||||
public ChainKey getReceiverChainKey(ECPublicKey senderEphemeral);
|
||||
public void addReceiverChain(ECPublicKey senderEphemeral, ChainKey chainKey);
|
||||
public void setSenderChain(ECKeyPair senderEphemeralPair, ChainKey chainKey);
|
||||
public ChainKey getSenderChainKey();
|
||||
public void setSenderChainKey(ChainKey nextChainKey);
|
||||
public boolean hasMessageKeys(ECPublicKey senderEphemeral, int counter);
|
||||
public MessageKeys removeMessageKeys(ECPublicKey senderEphemeral, int counter);
|
||||
public void setMessageKeys(ECPublicKey senderEphemeral, MessageKeys messageKeys);
|
||||
public void setReceiverChainKey(ECPublicKey senderEphemeral, ChainKey chainKey);
|
||||
public void setPendingKeyExchange(int sequence,
|
||||
ECKeyPair ourBaseKey,
|
||||
ECKeyPair ourEphemeralKey,
|
||||
IdentityKeyPair ourIdentityKey);
|
||||
public int getPendingKeyExchangeSequence();
|
||||
public ECKeyPair getPendingKeyExchangeBaseKey() throws InvalidKeyException;
|
||||
public ECKeyPair getPendingKeyExchangeEphemeralKey() throws InvalidKeyException;
|
||||
public IdentityKeyPair getPendingKeyExchangeIdentityKey() throws InvalidKeyException;
|
||||
public boolean hasPendingKeyExchange();
|
||||
public void setPendingPreKey(int preKeyId, ECPublicKey baseKey);
|
||||
public boolean hasPendingPreKey();
|
||||
public Pair<Integer, ECPublicKey> getPendingPreKey();
|
||||
public void clearPendingPreKey();
|
||||
public void setRemoteRegistrationId(int registrationId);
|
||||
public int getRemoteRegistrationId();
|
||||
public void setLocalRegistrationId(int registrationId);
|
||||
public int getLocalRegistrationId();
|
||||
public byte[] serialize();
|
||||
IdentityKeyPair ourIdentityKey)
|
||||
{
|
||||
PendingKeyExchange structure =
|
||||
PendingKeyExchange.newBuilder()
|
||||
.setSequence(sequence)
|
||||
.setLocalBaseKey(ByteString.copyFrom(ourBaseKey.getPublicKey().serialize()))
|
||||
.setLocalBaseKeyPrivate(ByteString.copyFrom(ourBaseKey.getPrivateKey().serialize()))
|
||||
.setLocalEphemeralKey(ByteString.copyFrom(ourEphemeralKey.getPublicKey().serialize()))
|
||||
.setLocalEphemeralKeyPrivate(ByteString.copyFrom(ourEphemeralKey.getPrivateKey().serialize()))
|
||||
.setLocalIdentityKey(ByteString.copyFrom(ourIdentityKey.getPublicKey().serialize()))
|
||||
.setLocalIdentityKeyPrivate(ByteString.copyFrom(ourIdentityKey.getPrivateKey().serialize()))
|
||||
.build();
|
||||
|
||||
this.sessionStructure = this.sessionStructure.toBuilder()
|
||||
.setPendingKeyExchange(structure)
|
||||
.build();
|
||||
}
|
||||
|
||||
public int getPendingKeyExchangeSequence() {
|
||||
return sessionStructure.getPendingKeyExchange().getSequence();
|
||||
}
|
||||
|
||||
public ECKeyPair getPendingKeyExchangeBaseKey() throws InvalidKeyException {
|
||||
ECPublicKey publicKey = Curve.decodePoint(sessionStructure.getPendingKeyExchange()
|
||||
.getLocalBaseKey().toByteArray(), 0);
|
||||
|
||||
ECPrivateKey privateKey = Curve.decodePrivatePoint(sessionStructure.getPendingKeyExchange()
|
||||
.getLocalBaseKeyPrivate()
|
||||
.toByteArray());
|
||||
|
||||
return new ECKeyPair(publicKey, privateKey);
|
||||
}
|
||||
|
||||
public ECKeyPair getPendingKeyExchangeEphemeralKey() throws InvalidKeyException {
|
||||
ECPublicKey publicKey = Curve.decodePoint(sessionStructure.getPendingKeyExchange()
|
||||
.getLocalEphemeralKey().toByteArray(), 0);
|
||||
|
||||
ECPrivateKey privateKey = Curve.decodePrivatePoint(sessionStructure.getPendingKeyExchange()
|
||||
.getLocalEphemeralKeyPrivate()
|
||||
.toByteArray());
|
||||
|
||||
return new ECKeyPair(publicKey, privateKey);
|
||||
}
|
||||
|
||||
public IdentityKeyPair getPendingKeyExchangeIdentityKey() throws InvalidKeyException {
|
||||
IdentityKey publicKey = new IdentityKey(sessionStructure.getPendingKeyExchange()
|
||||
.getLocalIdentityKey().toByteArray(), 0);
|
||||
|
||||
ECPrivateKey privateKey = Curve.decodePrivatePoint(sessionStructure.getPendingKeyExchange()
|
||||
.getLocalIdentityKeyPrivate()
|
||||
.toByteArray());
|
||||
|
||||
return new IdentityKeyPair(publicKey, privateKey);
|
||||
}
|
||||
|
||||
public boolean hasPendingKeyExchange() {
|
||||
return sessionStructure.hasPendingKeyExchange();
|
||||
}
|
||||
|
||||
public void setPendingPreKey(int preKeyId, ECPublicKey baseKey) {
|
||||
PendingPreKey pending = PendingPreKey.newBuilder()
|
||||
.setPreKeyId(preKeyId)
|
||||
.setBaseKey(ByteString.copyFrom(baseKey.serialize()))
|
||||
.build();
|
||||
|
||||
this.sessionStructure = this.sessionStructure.toBuilder()
|
||||
.setPendingPreKey(pending)
|
||||
.build();
|
||||
}
|
||||
|
||||
public boolean hasPendingPreKey() {
|
||||
return this.sessionStructure.hasPendingPreKey();
|
||||
}
|
||||
|
||||
public Pair<Integer, ECPublicKey> getPendingPreKey() {
|
||||
try {
|
||||
return new Pair<Integer, ECPublicKey>(sessionStructure.getPendingPreKey().getPreKeyId(),
|
||||
Curve.decodePoint(sessionStructure.getPendingPreKey()
|
||||
.getBaseKey()
|
||||
.toByteArray(), 0));
|
||||
} catch (InvalidKeyException e) {
|
||||
throw new AssertionError(e);
|
||||
}
|
||||
}
|
||||
|
||||
public void clearPendingPreKey() {
|
||||
this.sessionStructure = this.sessionStructure.toBuilder()
|
||||
.clearPendingPreKey()
|
||||
.build();
|
||||
}
|
||||
|
||||
public void setRemoteRegistrationId(int registrationId) {
|
||||
this.sessionStructure = this.sessionStructure.toBuilder()
|
||||
.setRemoteRegistrationId(registrationId)
|
||||
.build();
|
||||
}
|
||||
|
||||
public int getRemoteRegistrationId() {
|
||||
return this.sessionStructure.getRemoteRegistrationId();
|
||||
}
|
||||
|
||||
public void setLocalRegistrationId(int registrationId) {
|
||||
this.sessionStructure = this.sessionStructure.toBuilder()
|
||||
.setLocalRegistrationId(registrationId)
|
||||
.build();
|
||||
}
|
||||
|
||||
public int getLocalRegistrationId() {
|
||||
return this.sessionStructure.getLocalRegistrationId();
|
||||
}
|
||||
|
||||
public byte[] serialize() {
|
||||
return sessionStructure.toByteArray();
|
||||
}
|
||||
}
|
||||
|
||||
File diff suppressed because it is too large
Load Diff
@ -78,6 +78,13 @@ public class ByteUtil {
|
||||
return result;
|
||||
}
|
||||
|
||||
public static byte[] copyFrom(byte[] input) {
|
||||
byte[] output = new byte[input.length];
|
||||
System.arraycopy(input, 0, output, 0, output.length);
|
||||
|
||||
return output;
|
||||
}
|
||||
|
||||
public static byte intsToByteHighAndLow(int highValue, int lowValue) {
|
||||
return (byte)((highValue << 4 | lowValue) & 0xFF);
|
||||
}
|
||||
|
||||
@ -1,10 +1,49 @@
|
||||
package org.whispersystems.libaxolotl.util;
|
||||
|
||||
import org.whispersystems.libaxolotl.IdentityKey;
|
||||
import org.whispersystems.libaxolotl.IdentityKeyPair;
|
||||
import org.whispersystems.libaxolotl.ecc.Curve;
|
||||
import org.whispersystems.libaxolotl.ecc.ECKeyPair;
|
||||
import org.whispersystems.libaxolotl.state.PreKeyRecord;
|
||||
|
||||
import java.security.NoSuchAlgorithmException;
|
||||
import java.security.SecureRandom;
|
||||
import java.util.LinkedList;
|
||||
import java.util.List;
|
||||
|
||||
/**
|
||||
* Helper class for generating keys of different types.
|
||||
*
|
||||
* @author Moxie Marlinspike
|
||||
*/
|
||||
public class KeyHelper {
|
||||
|
||||
/**
|
||||
* Generate an identity key pair. Clients should only do this once,
|
||||
* at install time.
|
||||
*
|
||||
* @return the generated IdentityKeyPair.
|
||||
*/
|
||||
public static IdentityKeyPair generateIdentityKeyPair() {
|
||||
ECKeyPair keyPair = Curve.generateKeyPair(false);
|
||||
IdentityKey publicKey = new IdentityKey(keyPair.getPublicKey());
|
||||
return new IdentityKeyPair(publicKey, keyPair.getPrivateKey());
|
||||
}
|
||||
|
||||
/**
|
||||
* Generate a registration ID. Clients should only do this once,
|
||||
* at install time.
|
||||
*
|
||||
* @return the generated registration ID.
|
||||
*/
|
||||
public static int generateRegistrationId() {
|
||||
try {
|
||||
return SecureRandom.getInstance("SHA1PRNG").nextInt(16380) + 1;
|
||||
} catch (NoSuchAlgorithmException e) {
|
||||
throw new AssertionError(e);
|
||||
}
|
||||
}
|
||||
|
||||
public static int getRandomSequence(int max) {
|
||||
try {
|
||||
return SecureRandom.getInstance("SHA1PRNG").nextInt(max);
|
||||
@ -13,4 +52,26 @@ public class KeyHelper {
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Generate a list of PreKeys. Clients should do this at install time, and
|
||||
* subsequently any time the list of PreKeys stored on the server runs low.
|
||||
* <p>
|
||||
* PreKey IDs are shorts, so they will eventually be repeated. Clients should
|
||||
* store PreKeys in a circular buffer, so that they are repeated as infrequently
|
||||
* as possible.
|
||||
*
|
||||
* @param start The starting PreKey ID, inclusive.
|
||||
* @param count The number of PreKeys to generate.
|
||||
* @return the list of generated PreKeyRecords.
|
||||
*/
|
||||
public List<PreKeyRecord> generatePreKeys(int start, int count) {
|
||||
List<PreKeyRecord> results = new LinkedList<>();
|
||||
|
||||
for (int i=0;i<count;i++) {
|
||||
results.add(new PreKeyRecord((start + i) % Medium.MAX_VALUE, Curve.generateKeyPair(true)));
|
||||
}
|
||||
|
||||
return results;
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
@ -1,70 +0,0 @@
|
||||
package textsecure;
|
||||
|
||||
option java_package = "org.whispersystems.textsecure.storage";
|
||||
option java_outer_classname = "StorageProtos";
|
||||
|
||||
message SessionStructure {
|
||||
message Chain {
|
||||
optional bytes senderEphemeral = 1;
|
||||
optional bytes senderEphemeralPrivate = 2;
|
||||
|
||||
message ChainKey {
|
||||
optional uint32 index = 1;
|
||||
optional bytes key = 2;
|
||||
}
|
||||
|
||||
optional ChainKey chainKey = 3;
|
||||
|
||||
message MessageKey {
|
||||
optional uint32 index = 1;
|
||||
optional bytes cipherKey = 2;
|
||||
optional bytes macKey = 3;
|
||||
}
|
||||
|
||||
repeated MessageKey messageKeys = 4;
|
||||
}
|
||||
|
||||
message PendingKeyExchange {
|
||||
optional uint32 sequence = 1;
|
||||
optional bytes localBaseKey = 2;
|
||||
optional bytes localBaseKeyPrivate = 3;
|
||||
optional bytes localEphemeralKey = 4;
|
||||
optional bytes localEphemeralKeyPrivate = 5;
|
||||
optional bytes localIdentityKey = 7;
|
||||
optional bytes localIdentityKeyPrivate = 8;
|
||||
}
|
||||
|
||||
message PendingPreKey {
|
||||
optional uint32 preKeyId = 1;
|
||||
optional bytes baseKey = 2;
|
||||
}
|
||||
|
||||
optional uint32 sessionVersion = 1;
|
||||
optional bytes localIdentityPublic = 2;
|
||||
optional bytes remoteIdentityPublic = 3;
|
||||
|
||||
optional bytes rootKey = 4;
|
||||
optional uint32 previousCounter = 5;
|
||||
|
||||
optional Chain senderChain = 6;
|
||||
repeated Chain receiverChains = 7;
|
||||
|
||||
optional PendingKeyExchange pendingKeyExchange = 8;
|
||||
optional PendingPreKey pendingPreKey = 9;
|
||||
|
||||
optional uint32 remoteRegistrationId = 10;
|
||||
optional uint32 localRegistrationId = 11;
|
||||
|
||||
optional bool needsRefresh = 12;
|
||||
}
|
||||
|
||||
message RecordStructure {
|
||||
optional SessionStructure currentSession = 1;
|
||||
repeated SessionStructure previousSessions = 2;
|
||||
}
|
||||
|
||||
message PreKeyRecordStructure {
|
||||
optional uint32 id = 1;
|
||||
optional bytes publicKey = 2;
|
||||
optional bytes privateKey = 3;
|
||||
}
|
||||
@ -1,3 +1,3 @@
|
||||
|
||||
all:
|
||||
protoc --java_out=../src/ IncomingPushMessageSignal.proto WhisperTextProtocol.proto LocalStorageProtocol.proto
|
||||
protoc --java_out=../src/ IncomingPushMessageSignal.proto
|
||||
|
||||
@ -28,7 +28,6 @@ import org.whispersystems.libaxolotl.InvalidKeyIdException;
|
||||
import org.whispersystems.libaxolotl.state.PreKeyRecord;
|
||||
import org.whispersystems.libaxolotl.state.PreKeyStore;
|
||||
import org.whispersystems.libaxolotl.util.Medium;
|
||||
import org.whispersystems.textsecure.storage.TextSecurePreKeyRecord;
|
||||
import org.whispersystems.textsecure.storage.TextSecurePreKeyStore;
|
||||
import org.whispersystems.textsecure.util.Util;
|
||||
|
||||
@ -53,7 +52,7 @@ public class PreKeyUtil {
|
||||
for (int i=0;i<BATCH_SIZE;i++) {
|
||||
int preKeyId = (preKeyIdOffset + i) % Medium.MAX_VALUE;
|
||||
ECKeyPair keyPair = Curve25519.generateKeyPair(true);
|
||||
PreKeyRecord record = new TextSecurePreKeyRecord(masterSecret, preKeyId, keyPair);
|
||||
PreKeyRecord record = new PreKeyRecord(preKeyId, keyPair);
|
||||
|
||||
preKeyStore.store(preKeyId, record);
|
||||
records.add(record);
|
||||
@ -76,7 +75,7 @@ public class PreKeyUtil {
|
||||
}
|
||||
|
||||
ECKeyPair keyPair = Curve25519.generateKeyPair(true);
|
||||
PreKeyRecord record = new TextSecurePreKeyRecord(masterSecret, Medium.MAX_VALUE, keyPair);
|
||||
PreKeyRecord record = new PreKeyRecord(Medium.MAX_VALUE, keyPair);
|
||||
|
||||
preKeyStore.store(Medium.MAX_VALUE, record);
|
||||
|
||||
|
||||
@ -1,117 +0,0 @@
|
||||
package org.whispersystems.textsecure.storage;
|
||||
|
||||
import android.util.Log;
|
||||
|
||||
import com.google.protobuf.ByteString;
|
||||
|
||||
import org.whispersystems.libaxolotl.InvalidKeyException;
|
||||
import org.whispersystems.libaxolotl.InvalidMessageException;
|
||||
import org.whispersystems.libaxolotl.ecc.Curve;
|
||||
import org.whispersystems.libaxolotl.ecc.ECKeyPair;
|
||||
import org.whispersystems.libaxolotl.ecc.ECPrivateKey;
|
||||
import org.whispersystems.libaxolotl.ecc.ECPublicKey;
|
||||
import org.whispersystems.libaxolotl.state.PreKeyRecord;
|
||||
import org.whispersystems.textsecure.crypto.MasterCipher;
|
||||
import org.whispersystems.textsecure.crypto.MasterSecret;
|
||||
import org.whispersystems.textsecure.util.Conversions;
|
||||
|
||||
import java.io.ByteArrayOutputStream;
|
||||
import java.io.FileInputStream;
|
||||
import java.io.IOException;
|
||||
import java.io.InputStream;
|
||||
import java.io.OutputStream;
|
||||
|
||||
public class TextSecurePreKeyRecord implements PreKeyRecord {
|
||||
|
||||
private static final int CURRENT_VERSION_MARKER = 1;
|
||||
|
||||
private final MasterSecret masterSecret;
|
||||
private StorageProtos.PreKeyRecordStructure structure;
|
||||
|
||||
public TextSecurePreKeyRecord(MasterSecret masterSecret, int id, ECKeyPair keyPair) {
|
||||
this.masterSecret = masterSecret;
|
||||
this.structure = StorageProtos.PreKeyRecordStructure.newBuilder()
|
||||
.setId(id)
|
||||
.setPublicKey(ByteString.copyFrom(keyPair.getPublicKey()
|
||||
.serialize()))
|
||||
.setPrivateKey(ByteString.copyFrom(keyPair.getPrivateKey()
|
||||
.serialize()))
|
||||
.build();
|
||||
}
|
||||
|
||||
public TextSecurePreKeyRecord(MasterSecret masterSecret, FileInputStream in)
|
||||
throws IOException, InvalidMessageException
|
||||
{
|
||||
this.masterSecret = masterSecret;
|
||||
|
||||
MasterCipher masterCipher = new MasterCipher(masterSecret);
|
||||
int recordVersion = readInteger(in);
|
||||
|
||||
if (recordVersion != CURRENT_VERSION_MARKER) {
|
||||
Log.w("PreKeyRecord", "Invalid version: " + recordVersion);
|
||||
return;
|
||||
}
|
||||
|
||||
this.structure =
|
||||
StorageProtos.PreKeyRecordStructure.parseFrom(masterCipher.decryptBytes(readBlob(in)));
|
||||
|
||||
in.close();
|
||||
}
|
||||
|
||||
@Override
|
||||
public int getId() {
|
||||
return this.structure.getId();
|
||||
}
|
||||
|
||||
@Override
|
||||
public ECKeyPair getKeyPair() {
|
||||
try {
|
||||
ECPublicKey publicKey = Curve.decodePoint(this.structure.getPublicKey().toByteArray(), 0);
|
||||
ECPrivateKey privateKey = Curve.decodePrivatePoint(this.structure.getPrivateKey().toByteArray());
|
||||
|
||||
return new ECKeyPair(publicKey, privateKey);
|
||||
} catch (InvalidKeyException e) {
|
||||
throw new AssertionError(e);
|
||||
}
|
||||
}
|
||||
|
||||
public byte[] serialize() {
|
||||
try {
|
||||
ByteArrayOutputStream out = new ByteArrayOutputStream();
|
||||
MasterCipher masterCipher = new MasterCipher(masterSecret);
|
||||
|
||||
writeInteger(CURRENT_VERSION_MARKER, out);
|
||||
writeBlob(masterCipher.encryptBytes(structure.toByteArray()), out);
|
||||
|
||||
return out.toByteArray();
|
||||
} catch (IOException e) {
|
||||
throw new AssertionError(e);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
private byte[] readBlob(FileInputStream in) throws IOException {
|
||||
int length = readInteger(in);
|
||||
byte[] blobBytes = new byte[length];
|
||||
|
||||
in.read(blobBytes, 0, blobBytes.length);
|
||||
return blobBytes;
|
||||
}
|
||||
|
||||
private void writeBlob(byte[] blobBytes, OutputStream out) throws IOException {
|
||||
writeInteger(blobBytes.length, out);
|
||||
out.write(blobBytes);
|
||||
}
|
||||
|
||||
private int readInteger(FileInputStream in) throws IOException {
|
||||
byte[] integer = new byte[4];
|
||||
in.read(integer, 0, integer.length);
|
||||
return Conversions.byteArrayToInt(integer);
|
||||
}
|
||||
|
||||
private void writeInteger(int value, OutputStream out) throws IOException {
|
||||
byte[] valueBytes = Conversions.intToByteArray(value);
|
||||
out.write(valueBytes);
|
||||
}
|
||||
|
||||
}
|
||||
@ -7,7 +7,9 @@ import org.whispersystems.libaxolotl.InvalidKeyIdException;
|
||||
import org.whispersystems.libaxolotl.InvalidMessageException;
|
||||
import org.whispersystems.libaxolotl.state.PreKeyRecord;
|
||||
import org.whispersystems.libaxolotl.state.PreKeyStore;
|
||||
import org.whispersystems.textsecure.crypto.MasterCipher;
|
||||
import org.whispersystems.textsecure.crypto.MasterSecret;
|
||||
import org.whispersystems.textsecure.util.Conversions;
|
||||
|
||||
import java.io.File;
|
||||
import java.io.FileInputStream;
|
||||
@ -18,8 +20,9 @@ import java.nio.channels.FileChannel;
|
||||
|
||||
public class TextSecurePreKeyStore implements PreKeyStore {
|
||||
|
||||
public static final String PREKEY_DIRECTORY = "prekeys";
|
||||
private static final String TAG = TextSecurePreKeyStore.class.getSimpleName();
|
||||
public static final String PREKEY_DIRECTORY = "prekeys";
|
||||
private static final int CURRENT_VERSION_MARKER = 1;
|
||||
private static final String TAG = TextSecurePreKeyStore.class.getSimpleName();
|
||||
|
||||
private final Context context;
|
||||
private final MasterSecret masterSecret;
|
||||
@ -32,8 +35,17 @@ public class TextSecurePreKeyStore implements PreKeyStore {
|
||||
@Override
|
||||
public PreKeyRecord load(int preKeyId) throws InvalidKeyIdException {
|
||||
try {
|
||||
FileInputStream fin = new FileInputStream(getPreKeyFile(preKeyId));
|
||||
return new TextSecurePreKeyRecord(masterSecret, fin);
|
||||
MasterCipher masterCipher = new MasterCipher(masterSecret);
|
||||
FileInputStream fin = new FileInputStream(getPreKeyFile(preKeyId));
|
||||
int recordVersion = readInteger(fin);
|
||||
|
||||
if (recordVersion != CURRENT_VERSION_MARKER) {
|
||||
throw new AssertionError("Invalid version: " + recordVersion);
|
||||
}
|
||||
|
||||
byte[] serializedRecord = masterCipher.decryptBytes(readBlob(fin));
|
||||
return new PreKeyRecord(serializedRecord);
|
||||
|
||||
} catch (IOException | InvalidMessageException e) {
|
||||
Log.w(TAG, e);
|
||||
throw new InvalidKeyIdException(e);
|
||||
@ -43,11 +55,13 @@ public class TextSecurePreKeyStore implements PreKeyStore {
|
||||
@Override
|
||||
public void store(int preKeyId, PreKeyRecord record) {
|
||||
try {
|
||||
RandomAccessFile recordFile = new RandomAccessFile(getPreKeyFile(preKeyId), "rw");
|
||||
FileChannel out = recordFile.getChannel();
|
||||
MasterCipher masterCipher = new MasterCipher(masterSecret);
|
||||
RandomAccessFile recordFile = new RandomAccessFile(getPreKeyFile(preKeyId), "rw");
|
||||
FileChannel out = recordFile.getChannel();
|
||||
|
||||
out.position(0);
|
||||
out.write(ByteBuffer.wrap(record.serialize()));
|
||||
writeInteger(CURRENT_VERSION_MARKER, out);
|
||||
writeBlob(masterCipher.encryptBytes(record.serialize()), out);
|
||||
out.truncate(out.position());
|
||||
|
||||
recordFile.close();
|
||||
@ -83,4 +97,29 @@ public class TextSecurePreKeyStore implements PreKeyStore {
|
||||
|
||||
return directory;
|
||||
}
|
||||
|
||||
private byte[] readBlob(FileInputStream in) throws IOException {
|
||||
int length = readInteger(in);
|
||||
byte[] blobBytes = new byte[length];
|
||||
|
||||
in.read(blobBytes, 0, blobBytes.length);
|
||||
return blobBytes;
|
||||
}
|
||||
|
||||
private void writeBlob(byte[] blobBytes, FileChannel out) throws IOException {
|
||||
writeInteger(blobBytes.length, out);
|
||||
out.write(ByteBuffer.wrap(blobBytes));
|
||||
}
|
||||
|
||||
private int readInteger(FileInputStream in) throws IOException {
|
||||
byte[] integer = new byte[4];
|
||||
in.read(integer, 0, integer.length);
|
||||
return Conversions.byteArrayToInt(integer);
|
||||
}
|
||||
|
||||
private void writeInteger(int value, FileChannel out) throws IOException {
|
||||
byte[] valueBytes = Conversions.intToByteArray(value);
|
||||
out.write(ByteBuffer.wrap(valueBytes));
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
@ -1,142 +0,0 @@
|
||||
package org.whispersystems.textsecure.storage;
|
||||
|
||||
import org.whispersystems.libaxolotl.InvalidMessageException;
|
||||
import org.whispersystems.libaxolotl.state.SessionRecord;
|
||||
import org.whispersystems.libaxolotl.state.SessionState;
|
||||
import org.whispersystems.textsecure.crypto.MasterCipher;
|
||||
import org.whispersystems.textsecure.crypto.MasterSecret;
|
||||
import org.whispersystems.textsecure.util.Conversions;
|
||||
|
||||
import java.io.ByteArrayOutputStream;
|
||||
import java.io.FileInputStream;
|
||||
import java.io.IOException;
|
||||
import java.io.OutputStream;
|
||||
import java.util.LinkedList;
|
||||
import java.util.List;
|
||||
|
||||
import static org.whispersystems.textsecure.storage.StorageProtos.RecordStructure;
|
||||
import static org.whispersystems.textsecure.storage.StorageProtos.SessionStructure;
|
||||
|
||||
public class TextSecureSessionRecord implements SessionRecord {
|
||||
|
||||
private static final int SINGLE_STATE_VERSION = 1;
|
||||
private static final int ARCHIVE_STATES_VERSION = 2;
|
||||
private static final int CURRENT_VERSION = 2;
|
||||
|
||||
private TextSecureSessionState sessionState = new TextSecureSessionState(SessionStructure.newBuilder().build());
|
||||
private List<SessionState> previousStates = new LinkedList<>();
|
||||
|
||||
private final MasterSecret masterSecret;
|
||||
|
||||
public TextSecureSessionRecord(MasterSecret masterSecret) {
|
||||
this.masterSecret = masterSecret;
|
||||
}
|
||||
|
||||
public TextSecureSessionRecord(MasterSecret masterSecret, FileInputStream in)
|
||||
throws IOException, InvalidMessageException
|
||||
{
|
||||
this.masterSecret = masterSecret;
|
||||
|
||||
int versionMarker = readInteger(in);
|
||||
|
||||
if (versionMarker > CURRENT_VERSION) {
|
||||
throw new AssertionError("Unknown version: " + versionMarker);
|
||||
}
|
||||
|
||||
MasterCipher cipher = new MasterCipher(masterSecret);
|
||||
byte[] encryptedBlob = readBlob(in);
|
||||
|
||||
if (versionMarker == SINGLE_STATE_VERSION) {
|
||||
byte[] plaintextBytes = cipher.decryptBytes(encryptedBlob);
|
||||
SessionStructure sessionStructure = SessionStructure.parseFrom(plaintextBytes);
|
||||
this.sessionState = new TextSecureSessionState(sessionStructure);
|
||||
} else if (versionMarker == ARCHIVE_STATES_VERSION) {
|
||||
byte[] plaintextBytes = cipher.decryptBytes(encryptedBlob);
|
||||
RecordStructure recordStructure = RecordStructure.parseFrom(plaintextBytes);
|
||||
|
||||
this.sessionState = new TextSecureSessionState(recordStructure.getCurrentSession());
|
||||
this.previousStates = new LinkedList<>();
|
||||
|
||||
for (SessionStructure sessionStructure : recordStructure.getPreviousSessionsList()) {
|
||||
this.previousStates.add(new TextSecureSessionState(sessionStructure));
|
||||
}
|
||||
} else {
|
||||
throw new AssertionError("Unknown version: " + versionMarker);
|
||||
}
|
||||
|
||||
in.close();
|
||||
}
|
||||
|
||||
@Override
|
||||
public SessionState getSessionState() {
|
||||
return sessionState;
|
||||
}
|
||||
|
||||
@Override
|
||||
public List<SessionState> getPreviousSessionStates() {
|
||||
return previousStates;
|
||||
}
|
||||
|
||||
@Override
|
||||
public void reset() {
|
||||
this.sessionState = new TextSecureSessionState(SessionStructure.newBuilder().build());
|
||||
this.previousStates = new LinkedList<>();
|
||||
}
|
||||
|
||||
@Override
|
||||
public void archiveCurrentState() {
|
||||
this.previousStates.add(sessionState);
|
||||
this.sessionState = new TextSecureSessionState(SessionStructure.newBuilder().build());
|
||||
}
|
||||
|
||||
@Override
|
||||
public byte[] serialize() {
|
||||
try {
|
||||
List<SessionStructure> previousStructures = new LinkedList<>();
|
||||
|
||||
for (SessionState previousState : previousStates) {
|
||||
previousStructures.add(((TextSecureSessionState)previousState).getStructure());
|
||||
}
|
||||
|
||||
RecordStructure record = RecordStructure.newBuilder()
|
||||
.setCurrentSession(sessionState.getStructure())
|
||||
.addAllPreviousSessions(previousStructures)
|
||||
.build();
|
||||
|
||||
|
||||
ByteArrayOutputStream serialized = new ByteArrayOutputStream();
|
||||
MasterCipher cipher = new MasterCipher(masterSecret);
|
||||
|
||||
writeInteger(CURRENT_VERSION, serialized);
|
||||
writeBlob(cipher.encryptBytes(record.toByteArray()), serialized);
|
||||
|
||||
return serialized.toByteArray();
|
||||
} catch (IOException e) {
|
||||
throw new AssertionError(e);
|
||||
}
|
||||
}
|
||||
|
||||
private byte[] readBlob(FileInputStream in) throws IOException {
|
||||
int length = readInteger(in);
|
||||
byte[] blobBytes = new byte[length];
|
||||
|
||||
in.read(blobBytes, 0, blobBytes.length);
|
||||
return blobBytes;
|
||||
}
|
||||
|
||||
private void writeBlob(byte[] blobBytes, OutputStream out) throws IOException {
|
||||
writeInteger(blobBytes.length, out);
|
||||
out.write(blobBytes);
|
||||
}
|
||||
|
||||
private int readInteger(FileInputStream in) throws IOException {
|
||||
byte[] integer = new byte[4];
|
||||
in.read(integer, 0, integer.length);
|
||||
return Conversions.byteArrayToInt(integer);
|
||||
}
|
||||
|
||||
private void writeInteger(int value, OutputStream out) throws IOException {
|
||||
byte[] valueBytes = Conversions.intToByteArray(value);
|
||||
out.write(valueBytes);
|
||||
}
|
||||
}
|
||||
@ -1,449 +0,0 @@
|
||||
/**
|
||||
* Copyright (C) 2014 Open Whisper Systems
|
||||
*
|
||||
* This program is free software: you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation, either version 3 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
*/
|
||||
package org.whispersystems.textsecure.storage;
|
||||
|
||||
import android.util.Log;
|
||||
|
||||
import com.google.protobuf.ByteString;
|
||||
|
||||
import org.whispersystems.libaxolotl.IdentityKey;
|
||||
import org.whispersystems.libaxolotl.IdentityKeyPair;
|
||||
import org.whispersystems.libaxolotl.InvalidKeyException;
|
||||
import org.whispersystems.libaxolotl.state.SessionState;
|
||||
import org.whispersystems.libaxolotl.ecc.Curve;
|
||||
import org.whispersystems.libaxolotl.ecc.ECKeyPair;
|
||||
import org.whispersystems.libaxolotl.ecc.ECPrivateKey;
|
||||
import org.whispersystems.libaxolotl.ecc.ECPublicKey;
|
||||
import org.whispersystems.libaxolotl.ratchet.ChainKey;
|
||||
import org.whispersystems.libaxolotl.ratchet.MessageKeys;
|
||||
import org.whispersystems.libaxolotl.ratchet.RootKey;
|
||||
import org.whispersystems.libaxolotl.util.Pair;
|
||||
import org.whispersystems.textsecure.storage.StorageProtos.SessionStructure.Chain;
|
||||
import org.whispersystems.textsecure.storage.StorageProtos.SessionStructure.PendingKeyExchange;
|
||||
import org.whispersystems.textsecure.storage.StorageProtos.SessionStructure.PendingPreKey;
|
||||
|
||||
import java.util.Iterator;
|
||||
import java.util.LinkedList;
|
||||
import java.util.List;
|
||||
|
||||
import javax.crypto.spec.SecretKeySpec;
|
||||
|
||||
import static org.whispersystems.textsecure.storage.StorageProtos.SessionStructure;
|
||||
|
||||
public class TextSecureSessionState implements SessionState {
|
||||
|
||||
private SessionStructure sessionStructure;
|
||||
|
||||
public TextSecureSessionState(SessionStructure sessionStructure) {
|
||||
this.sessionStructure = sessionStructure;
|
||||
}
|
||||
|
||||
public SessionStructure getStructure() {
|
||||
return sessionStructure;
|
||||
}
|
||||
|
||||
public void setNeedsRefresh(boolean needsRefresh) {
|
||||
this.sessionStructure = this.sessionStructure.toBuilder()
|
||||
.setNeedsRefresh(needsRefresh)
|
||||
.build();
|
||||
}
|
||||
|
||||
public boolean getNeedsRefresh() {
|
||||
return this.sessionStructure.getNeedsRefresh();
|
||||
}
|
||||
|
||||
public void setSessionVersion(int version) {
|
||||
this.sessionStructure = this.sessionStructure.toBuilder()
|
||||
.setSessionVersion(version)
|
||||
.build();
|
||||
}
|
||||
|
||||
public int getSessionVersion() {
|
||||
return this.sessionStructure.getSessionVersion();
|
||||
}
|
||||
|
||||
public void setRemoteIdentityKey(IdentityKey identityKey) {
|
||||
this.sessionStructure = this.sessionStructure.toBuilder()
|
||||
.setRemoteIdentityPublic(ByteString.copyFrom(identityKey.serialize()))
|
||||
.build();
|
||||
}
|
||||
|
||||
public void setLocalIdentityKey(IdentityKey identityKey) {
|
||||
this.sessionStructure = this.sessionStructure.toBuilder()
|
||||
.setLocalIdentityPublic(ByteString.copyFrom(identityKey.serialize()))
|
||||
.build();
|
||||
}
|
||||
|
||||
public IdentityKey getRemoteIdentityKey() {
|
||||
try {
|
||||
if (!this.sessionStructure.hasRemoteIdentityPublic()) {
|
||||
return null;
|
||||
}
|
||||
|
||||
return new IdentityKey(this.sessionStructure.getRemoteIdentityPublic().toByteArray(), 0);
|
||||
} catch (InvalidKeyException e) {
|
||||
Log.w("SessionRecordV2", e);
|
||||
return null;
|
||||
}
|
||||
}
|
||||
|
||||
public IdentityKey getLocalIdentityKey() {
|
||||
try {
|
||||
return new IdentityKey(this.sessionStructure.getLocalIdentityPublic().toByteArray(), 0);
|
||||
} catch (InvalidKeyException e) {
|
||||
throw new AssertionError(e);
|
||||
}
|
||||
}
|
||||
|
||||
public int getPreviousCounter() {
|
||||
return sessionStructure.getPreviousCounter();
|
||||
}
|
||||
|
||||
public void setPreviousCounter(int previousCounter) {
|
||||
this.sessionStructure = this.sessionStructure.toBuilder()
|
||||
.setPreviousCounter(previousCounter)
|
||||
.build();
|
||||
}
|
||||
|
||||
public RootKey getRootKey() {
|
||||
return new RootKey(this.sessionStructure.getRootKey().toByteArray());
|
||||
}
|
||||
|
||||
public void setRootKey(RootKey rootKey) {
|
||||
this.sessionStructure = this.sessionStructure.toBuilder()
|
||||
.setRootKey(ByteString.copyFrom(rootKey.getKeyBytes()))
|
||||
.build();
|
||||
}
|
||||
|
||||
public ECPublicKey getSenderEphemeral() {
|
||||
try {
|
||||
return Curve.decodePoint(sessionStructure.getSenderChain().getSenderEphemeral().toByteArray(), 0);
|
||||
} catch (InvalidKeyException e) {
|
||||
throw new AssertionError(e);
|
||||
}
|
||||
}
|
||||
|
||||
public ECKeyPair getSenderEphemeralPair() {
|
||||
ECPublicKey publicKey = getSenderEphemeral();
|
||||
ECPrivateKey privateKey = Curve.decodePrivatePoint(sessionStructure.getSenderChain()
|
||||
.getSenderEphemeralPrivate()
|
||||
.toByteArray());
|
||||
|
||||
return new ECKeyPair(publicKey, privateKey);
|
||||
}
|
||||
|
||||
public boolean hasReceiverChain(ECPublicKey senderEphemeral) {
|
||||
return getReceiverChain(senderEphemeral) != null;
|
||||
}
|
||||
|
||||
public boolean hasSenderChain() {
|
||||
return sessionStructure.hasSenderChain();
|
||||
}
|
||||
|
||||
private Pair<Chain,Integer> getReceiverChain(ECPublicKey senderEphemeral) {
|
||||
List<Chain> receiverChains = sessionStructure.getReceiverChainsList();
|
||||
int index = 0;
|
||||
|
||||
for (Chain receiverChain : receiverChains) {
|
||||
try {
|
||||
ECPublicKey chainSenderEphemeral = Curve.decodePoint(receiverChain.getSenderEphemeral().toByteArray(), 0);
|
||||
|
||||
if (chainSenderEphemeral.equals(senderEphemeral)) {
|
||||
return new Pair<Chain,Integer>(receiverChain,index);
|
||||
}
|
||||
} catch (InvalidKeyException e) {
|
||||
Log.w("SessionRecordV2", e);
|
||||
}
|
||||
|
||||
index++;
|
||||
}
|
||||
|
||||
return null;
|
||||
}
|
||||
|
||||
public ChainKey getReceiverChainKey(ECPublicKey senderEphemeral) {
|
||||
Pair<Chain,Integer> receiverChainAndIndex = getReceiverChain(senderEphemeral);
|
||||
Chain receiverChain = receiverChainAndIndex.first();
|
||||
|
||||
if (receiverChain == null) {
|
||||
return null;
|
||||
} else {
|
||||
return new ChainKey(receiverChain.getChainKey().getKey().toByteArray(),
|
||||
receiverChain.getChainKey().getIndex());
|
||||
}
|
||||
}
|
||||
|
||||
public void addReceiverChain(ECPublicKey senderEphemeral, ChainKey chainKey) {
|
||||
Chain.ChainKey chainKeyStructure = Chain.ChainKey.newBuilder()
|
||||
.setKey(ByteString.copyFrom(chainKey.getKey()))
|
||||
.setIndex(chainKey.getIndex())
|
||||
.build();
|
||||
|
||||
Chain chain = Chain.newBuilder()
|
||||
.setChainKey(chainKeyStructure)
|
||||
.setSenderEphemeral(ByteString.copyFrom(senderEphemeral.serialize()))
|
||||
.build();
|
||||
|
||||
this.sessionStructure = this.sessionStructure.toBuilder().addReceiverChains(chain).build();
|
||||
|
||||
if (this.sessionStructure.getReceiverChainsList().size() > 5) {
|
||||
this.sessionStructure = this.sessionStructure.toBuilder()
|
||||
.removeReceiverChains(0)
|
||||
.build();
|
||||
}
|
||||
}
|
||||
|
||||
public void setSenderChain(ECKeyPair senderEphemeralPair, ChainKey chainKey) {
|
||||
Chain.ChainKey chainKeyStructure = Chain.ChainKey.newBuilder()
|
||||
.setKey(ByteString.copyFrom(chainKey.getKey()))
|
||||
.setIndex(chainKey.getIndex())
|
||||
.build();
|
||||
|
||||
Chain senderChain = Chain.newBuilder()
|
||||
.setSenderEphemeral(ByteString.copyFrom(senderEphemeralPair.getPublicKey().serialize()))
|
||||
.setSenderEphemeralPrivate(ByteString.copyFrom(senderEphemeralPair.getPrivateKey().serialize()))
|
||||
.setChainKey(chainKeyStructure)
|
||||
.build();
|
||||
|
||||
this.sessionStructure = this.sessionStructure.toBuilder().setSenderChain(senderChain).build();
|
||||
}
|
||||
|
||||
public ChainKey getSenderChainKey() {
|
||||
Chain.ChainKey chainKeyStructure = sessionStructure.getSenderChain().getChainKey();
|
||||
return new ChainKey(chainKeyStructure.getKey().toByteArray(), chainKeyStructure.getIndex());
|
||||
}
|
||||
|
||||
|
||||
public void setSenderChainKey(ChainKey nextChainKey) {
|
||||
Chain.ChainKey chainKey = Chain.ChainKey.newBuilder()
|
||||
.setKey(ByteString.copyFrom(nextChainKey.getKey()))
|
||||
.setIndex(nextChainKey.getIndex())
|
||||
.build();
|
||||
|
||||
Chain chain = sessionStructure.getSenderChain().toBuilder()
|
||||
.setChainKey(chainKey).build();
|
||||
|
||||
this.sessionStructure = this.sessionStructure.toBuilder().setSenderChain(chain).build();
|
||||
}
|
||||
|
||||
public boolean hasMessageKeys(ECPublicKey senderEphemeral, int counter) {
|
||||
Pair<Chain,Integer> chainAndIndex = getReceiverChain(senderEphemeral);
|
||||
Chain chain = chainAndIndex.first();
|
||||
|
||||
if (chain == null) {
|
||||
return false;
|
||||
}
|
||||
|
||||
List<Chain.MessageKey> messageKeyList = chain.getMessageKeysList();
|
||||
|
||||
for (Chain.MessageKey messageKey : messageKeyList) {
|
||||
if (messageKey.getIndex() == counter) {
|
||||
return true;
|
||||
}
|
||||
}
|
||||
|
||||
return false;
|
||||
}
|
||||
|
||||
public MessageKeys removeMessageKeys(ECPublicKey senderEphemeral, int counter) {
|
||||
Pair<Chain,Integer> chainAndIndex = getReceiverChain(senderEphemeral);
|
||||
Chain chain = chainAndIndex.first();
|
||||
|
||||
if (chain == null) {
|
||||
return null;
|
||||
}
|
||||
|
||||
List<Chain.MessageKey> messageKeyList = new LinkedList<Chain.MessageKey>(chain.getMessageKeysList());
|
||||
Iterator<Chain.MessageKey> messageKeyIterator = messageKeyList.iterator();
|
||||
MessageKeys result = null;
|
||||
|
||||
while (messageKeyIterator.hasNext()) {
|
||||
Chain.MessageKey messageKey = messageKeyIterator.next();
|
||||
|
||||
if (messageKey.getIndex() == counter) {
|
||||
result = new MessageKeys(new SecretKeySpec(messageKey.getCipherKey().toByteArray(), "AES"),
|
||||
new SecretKeySpec(messageKey.getMacKey().toByteArray(), "HmacSHA256"),
|
||||
messageKey.getIndex());
|
||||
|
||||
messageKeyIterator.remove();
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
Chain updatedChain = chain.toBuilder().clearMessageKeys()
|
||||
.addAllMessageKeys(messageKeyList)
|
||||
.build();
|
||||
|
||||
this.sessionStructure = this.sessionStructure.toBuilder()
|
||||
.setReceiverChains(chainAndIndex.second(), updatedChain)
|
||||
.build();
|
||||
|
||||
return result;
|
||||
}
|
||||
|
||||
public void setMessageKeys(ECPublicKey senderEphemeral, MessageKeys messageKeys) {
|
||||
Pair<Chain,Integer> chainAndIndex = getReceiverChain(senderEphemeral);
|
||||
Chain chain = chainAndIndex.first();
|
||||
Chain.MessageKey messageKeyStructure = Chain.MessageKey.newBuilder()
|
||||
.setCipherKey(ByteString.copyFrom(messageKeys.getCipherKey().getEncoded()))
|
||||
.setMacKey(ByteString.copyFrom(messageKeys.getMacKey().getEncoded()))
|
||||
.setIndex(messageKeys.getCounter())
|
||||
.build();
|
||||
|
||||
Chain updatedChain = chain.toBuilder()
|
||||
.addMessageKeys(messageKeyStructure)
|
||||
.build();
|
||||
|
||||
this.sessionStructure = this.sessionStructure.toBuilder()
|
||||
.setReceiverChains(chainAndIndex.second(), updatedChain)
|
||||
.build();
|
||||
}
|
||||
|
||||
public void setReceiverChainKey(ECPublicKey senderEphemeral, ChainKey chainKey) {
|
||||
Pair<Chain,Integer> chainAndIndex = getReceiverChain(senderEphemeral);
|
||||
Chain chain = chainAndIndex.first();
|
||||
|
||||
Chain.ChainKey chainKeyStructure = Chain.ChainKey.newBuilder()
|
||||
.setKey(ByteString.copyFrom(chainKey.getKey()))
|
||||
.setIndex(chainKey.getIndex())
|
||||
.build();
|
||||
|
||||
Chain updatedChain = chain.toBuilder().setChainKey(chainKeyStructure).build();
|
||||
|
||||
this.sessionStructure = this.sessionStructure.toBuilder()
|
||||
.setReceiverChains(chainAndIndex.second(), updatedChain)
|
||||
.build();
|
||||
}
|
||||
|
||||
public void setPendingKeyExchange(int sequence,
|
||||
ECKeyPair ourBaseKey,
|
||||
ECKeyPair ourEphemeralKey,
|
||||
IdentityKeyPair ourIdentityKey)
|
||||
{
|
||||
PendingKeyExchange structure =
|
||||
PendingKeyExchange.newBuilder()
|
||||
.setSequence(sequence)
|
||||
.setLocalBaseKey(ByteString.copyFrom(ourBaseKey.getPublicKey().serialize()))
|
||||
.setLocalBaseKeyPrivate(ByteString.copyFrom(ourBaseKey.getPrivateKey().serialize()))
|
||||
.setLocalEphemeralKey(ByteString.copyFrom(ourEphemeralKey.getPublicKey().serialize()))
|
||||
.setLocalEphemeralKeyPrivate(ByteString.copyFrom(ourEphemeralKey.getPrivateKey().serialize()))
|
||||
.setLocalIdentityKey(ByteString.copyFrom(ourIdentityKey.getPublicKey().serialize()))
|
||||
.setLocalIdentityKeyPrivate(ByteString.copyFrom(ourIdentityKey.getPrivateKey().serialize()))
|
||||
.build();
|
||||
|
||||
this.sessionStructure = this.sessionStructure.toBuilder()
|
||||
.setPendingKeyExchange(structure)
|
||||
.build();
|
||||
}
|
||||
|
||||
public int getPendingKeyExchangeSequence() {
|
||||
return sessionStructure.getPendingKeyExchange().getSequence();
|
||||
}
|
||||
|
||||
public ECKeyPair getPendingKeyExchangeBaseKey() throws InvalidKeyException {
|
||||
ECPublicKey publicKey = Curve.decodePoint(sessionStructure.getPendingKeyExchange()
|
||||
.getLocalBaseKey().toByteArray(), 0);
|
||||
|
||||
ECPrivateKey privateKey = Curve.decodePrivatePoint(sessionStructure.getPendingKeyExchange()
|
||||
.getLocalBaseKeyPrivate()
|
||||
.toByteArray());
|
||||
|
||||
return new ECKeyPair(publicKey, privateKey);
|
||||
}
|
||||
|
||||
public ECKeyPair getPendingKeyExchangeEphemeralKey() throws InvalidKeyException {
|
||||
ECPublicKey publicKey = Curve.decodePoint(sessionStructure.getPendingKeyExchange()
|
||||
.getLocalEphemeralKey().toByteArray(), 0);
|
||||
|
||||
ECPrivateKey privateKey = Curve.decodePrivatePoint(sessionStructure.getPendingKeyExchange()
|
||||
.getLocalEphemeralKeyPrivate()
|
||||
.toByteArray());
|
||||
|
||||
return new ECKeyPair(publicKey, privateKey);
|
||||
}
|
||||
|
||||
public IdentityKeyPair getPendingKeyExchangeIdentityKey() throws InvalidKeyException {
|
||||
IdentityKey publicKey = new IdentityKey(sessionStructure.getPendingKeyExchange()
|
||||
.getLocalIdentityKey().toByteArray(), 0);
|
||||
|
||||
ECPrivateKey privateKey = Curve.decodePrivatePoint(sessionStructure.getPendingKeyExchange()
|
||||
.getLocalIdentityKeyPrivate()
|
||||
.toByteArray());
|
||||
|
||||
return new IdentityKeyPair(publicKey, privateKey);
|
||||
}
|
||||
|
||||
public boolean hasPendingKeyExchange() {
|
||||
return sessionStructure.hasPendingKeyExchange();
|
||||
}
|
||||
|
||||
public void setPendingPreKey(int preKeyId, ECPublicKey baseKey) {
|
||||
PendingPreKey pending = PendingPreKey.newBuilder()
|
||||
.setPreKeyId(preKeyId)
|
||||
.setBaseKey(ByteString.copyFrom(baseKey.serialize()))
|
||||
.build();
|
||||
|
||||
this.sessionStructure = this.sessionStructure.toBuilder()
|
||||
.setPendingPreKey(pending)
|
||||
.build();
|
||||
}
|
||||
|
||||
public boolean hasPendingPreKey() {
|
||||
return this.sessionStructure.hasPendingPreKey();
|
||||
}
|
||||
|
||||
public Pair<Integer, ECPublicKey> getPendingPreKey() {
|
||||
try {
|
||||
return new Pair<Integer, ECPublicKey>(sessionStructure.getPendingPreKey().getPreKeyId(),
|
||||
Curve.decodePoint(sessionStructure.getPendingPreKey()
|
||||
.getBaseKey()
|
||||
.toByteArray(), 0));
|
||||
} catch (InvalidKeyException e) {
|
||||
throw new AssertionError(e);
|
||||
}
|
||||
}
|
||||
|
||||
public void clearPendingPreKey() {
|
||||
this.sessionStructure = this.sessionStructure.toBuilder()
|
||||
.clearPendingPreKey()
|
||||
.build();
|
||||
}
|
||||
|
||||
public void setRemoteRegistrationId(int registrationId) {
|
||||
this.sessionStructure = this.sessionStructure.toBuilder()
|
||||
.setRemoteRegistrationId(registrationId)
|
||||
.build();
|
||||
}
|
||||
|
||||
public int getRemoteRegistrationId() {
|
||||
return this.sessionStructure.getRemoteRegistrationId();
|
||||
}
|
||||
|
||||
public void setLocalRegistrationId(int registrationId) {
|
||||
this.sessionStructure = this.sessionStructure.toBuilder()
|
||||
.setLocalRegistrationId(registrationId)
|
||||
.build();
|
||||
}
|
||||
|
||||
public int getLocalRegistrationId() {
|
||||
return this.sessionStructure.getLocalRegistrationId();
|
||||
}
|
||||
|
||||
public byte[] serialize() {
|
||||
return sessionStructure.toByteArray();
|
||||
}
|
||||
}
|
||||
@ -5,8 +5,11 @@ import android.util.Log;
|
||||
|
||||
import org.whispersystems.libaxolotl.InvalidMessageException;
|
||||
import org.whispersystems.libaxolotl.state.SessionRecord;
|
||||
import org.whispersystems.libaxolotl.state.SessionState;
|
||||
import org.whispersystems.libaxolotl.state.SessionStore;
|
||||
import org.whispersystems.textsecure.crypto.MasterCipher;
|
||||
import org.whispersystems.textsecure.crypto.MasterSecret;
|
||||
import org.whispersystems.textsecure.util.Conversions;
|
||||
|
||||
import java.io.File;
|
||||
import java.io.FileInputStream;
|
||||
@ -17,12 +20,18 @@ import java.nio.channels.FileChannel;
|
||||
import java.util.LinkedList;
|
||||
import java.util.List;
|
||||
|
||||
import static org.whispersystems.libaxolotl.state.StorageProtos.SessionStructure;
|
||||
|
||||
public class TextSecureSessionStore implements SessionStore {
|
||||
|
||||
private static final String TAG = TextSecureSessionStore.class.getSimpleName();
|
||||
private static final String SESSIONS_DIRECTORY_V2 = "sessions-v2";
|
||||
private static final Object FILE_LOCK = new Object();
|
||||
|
||||
private static final int SINGLE_STATE_VERSION = 1;
|
||||
private static final int ARCHIVE_STATES_VERSION = 2;
|
||||
private static final int CURRENT_VERSION = 2;
|
||||
|
||||
private final Context context;
|
||||
private final MasterSecret masterSecret;
|
||||
|
||||
@ -35,11 +44,30 @@ public class TextSecureSessionStore implements SessionStore {
|
||||
public SessionRecord load(long recipientId, int deviceId) {
|
||||
synchronized (FILE_LOCK) {
|
||||
try {
|
||||
FileInputStream input = new FileInputStream(getSessionFile(recipientId, deviceId));
|
||||
return new TextSecureSessionRecord(masterSecret, input);
|
||||
MasterCipher cipher = new MasterCipher(masterSecret);
|
||||
FileInputStream in = new FileInputStream(getSessionFile(recipientId, deviceId));
|
||||
|
||||
int versionMarker = readInteger(in);
|
||||
|
||||
if (versionMarker > CURRENT_VERSION) {
|
||||
throw new AssertionError("Unknown version: " + versionMarker);
|
||||
}
|
||||
|
||||
byte[] serialized = cipher.decryptBytes(readBlob(in));
|
||||
in.close();
|
||||
|
||||
if (versionMarker == SINGLE_STATE_VERSION) {
|
||||
SessionStructure sessionStructure = SessionStructure.parseFrom(serialized);
|
||||
SessionState sessionState = new SessionState(sessionStructure);
|
||||
return new SessionRecord(sessionState);
|
||||
} else if (versionMarker == ARCHIVE_STATES_VERSION) {
|
||||
return new SessionRecord(serialized);
|
||||
} else {
|
||||
throw new AssertionError("Unknown version: " + versionMarker);
|
||||
}
|
||||
} catch (InvalidMessageException | IOException e) {
|
||||
Log.w(TAG, "No existing session information found.");
|
||||
return new TextSecureSessionRecord(masterSecret);
|
||||
return new SessionRecord();
|
||||
}
|
||||
}
|
||||
}
|
||||
@ -47,11 +75,13 @@ public class TextSecureSessionStore implements SessionStore {
|
||||
@Override
|
||||
public void store(long recipientId, int deviceId, SessionRecord record) {
|
||||
try {
|
||||
MasterCipher masterCipher = new MasterCipher(masterSecret);
|
||||
RandomAccessFile sessionFile = new RandomAccessFile(getSessionFile(recipientId, deviceId), "rw");
|
||||
FileChannel out = sessionFile.getChannel();
|
||||
|
||||
out.position(0);
|
||||
out.write(ByteBuffer.wrap(record.serialize()));
|
||||
writeInteger(CURRENT_VERSION, out);
|
||||
writeBlob(masterCipher.encryptBytes(record.serialize()), out);
|
||||
out.truncate(out.position());
|
||||
|
||||
sessionFile.close();
|
||||
@ -126,4 +156,28 @@ public class TextSecureSessionStore implements SessionStore {
|
||||
return recipientId + (deviceId == RecipientDevice.DEFAULT_DEVICE_ID ? "" : "." + deviceId);
|
||||
}
|
||||
|
||||
private byte[] readBlob(FileInputStream in) throws IOException {
|
||||
int length = readInteger(in);
|
||||
byte[] blobBytes = new byte[length];
|
||||
|
||||
in.read(blobBytes, 0, blobBytes.length);
|
||||
return blobBytes;
|
||||
}
|
||||
|
||||
private void writeBlob(byte[] blobBytes, FileChannel out) throws IOException {
|
||||
writeInteger(blobBytes.length, out);
|
||||
out.write(ByteBuffer.wrap(blobBytes));
|
||||
}
|
||||
|
||||
private int readInteger(FileInputStream in) throws IOException {
|
||||
byte[] integer = new byte[4];
|
||||
in.read(integer, 0, integer.length);
|
||||
return Conversions.byteArrayToInt(integer);
|
||||
}
|
||||
|
||||
private void writeInteger(int value, FileChannel out) throws IOException {
|
||||
byte[] valueBytes = Conversions.intToByteArray(value);
|
||||
out.write(ByteBuffer.wrap(valueBytes));
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
@ -93,15 +93,6 @@ public class Util {
|
||||
return value == null || value.length() == 0;
|
||||
}
|
||||
|
||||
|
||||
public static int generateRegistrationId() {
|
||||
try {
|
||||
return SecureRandom.getInstance("SHA1PRNG").nextInt(16380) + 1;
|
||||
} catch (NoSuchAlgorithmException e) {
|
||||
throw new AssertionError(e);
|
||||
}
|
||||
}
|
||||
|
||||
public static String getSecret(int size) {
|
||||
try {
|
||||
byte[] secret = new byte[size];
|
||||
|
||||
@ -19,6 +19,7 @@ import org.thoughtcrime.securesms.util.DirectoryHelper;
|
||||
import org.thoughtcrime.securesms.util.TextSecurePreferences;
|
||||
import org.whispersystems.libaxolotl.IdentityKey;
|
||||
import org.whispersystems.libaxolotl.state.PreKeyRecord;
|
||||
import org.whispersystems.libaxolotl.util.KeyHelper;
|
||||
import org.whispersystems.textsecure.crypto.MasterSecret;
|
||||
import org.whispersystems.textsecure.crypto.PreKeyUtil;
|
||||
import org.whispersystems.textsecure.push.ExpectationFailedException;
|
||||
@ -178,7 +179,7 @@ public class RegistrationService extends Service {
|
||||
int registrationId = TextSecurePreferences.getLocalRegistrationId(this);
|
||||
|
||||
if (registrationId == 0) {
|
||||
registrationId = Util.generateRegistrationId();
|
||||
registrationId = KeyHelper.generateRegistrationId();
|
||||
TextSecurePreferences.setLocalRegistrationId(this, registrationId);
|
||||
}
|
||||
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user