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Synchronize all Cipher#doFinal

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andrew
2023-05-05 12:07:19 +09:30
parent 99cb10f5be
commit d3ce899a80
8 changed files with 75 additions and 96 deletions
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17
libsession/src/main/java/org/session/libsession/utilities/AESGCM.kt
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@@ -1,6 +1,7 @@
package org.session.libsession.utilities
import androidx.annotation.WorkerThread
import org.session.libsignal.crypto.CipherUtil.CIPHER_LOCK
import org.session.libsignal.utilities.ByteUtil
import org.session.libsignal.utilities.Util
import org.session.libsignal.utilities.Hex
@@ -27,9 +28,11 @@ internal object AESGCM {
internal fun decrypt(ivAndCiphertext: ByteArray, symmetricKey: ByteArray): ByteArray {
val iv = ivAndCiphertext.sliceArray(0 until ivSize)
val ciphertext = ivAndCiphertext.sliceArray(ivSize until ivAndCiphertext.count())
val cipher = Cipher.getInstance("AES/GCM/NoPadding")
cipher.init(Cipher.DECRYPT_MODE, SecretKeySpec(symmetricKey, "AES"), GCMParameterSpec(gcmTagSize, iv))
return cipher.doFinal(ciphertext)
synchronized(CIPHER_LOCK) {
val cipher = Cipher.getInstance("AES/GCM/NoPadding")
cipher.init(Cipher.DECRYPT_MODE, SecretKeySpec(symmetricKey, "AES"), GCMParameterSpec(gcmTagSize, iv))
return cipher.doFinal(ciphertext)
}
}
/**
@@ -47,9 +50,11 @@ internal object AESGCM {
*/
internal fun encrypt(plaintext: ByteArray, symmetricKey: ByteArray): ByteArray {
val iv = Util.getSecretBytes(ivSize)
val cipher = Cipher.getInstance("AES/GCM/NoPadding")
cipher.init(Cipher.ENCRYPT_MODE, SecretKeySpec(symmetricKey, "AES"), GCMParameterSpec(gcmTagSize, iv))
return ByteUtil.combine(iv, cipher.doFinal(plaintext))
synchronized(CIPHER_LOCK) {
val cipher = Cipher.getInstance("AES/GCM/NoPadding")
cipher.init(Cipher.ENCRYPT_MODE, SecretKeySpec(symmetricKey, "AES"), GCMParameterSpec(gcmTagSize, iv))
return ByteUtil.combine(iv, cipher.doFinal(plaintext))
}
}
/**