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Curve25519 keys to 1 mod 8 for ephemerals.

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Moxie Marlinspike
2014-03-19 15:25:50 -07:00
parent fd1a18d2d0
commit 5a3daf4846
17 changed files with 34 additions and 32 deletions
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7
library/jni/curve25519-donna-jni.c
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@@ -22,11 +22,16 @@
#include "curve25519-donna.h"
JNIEXPORT jbyteArray JNICALL Java_org_whispersystems_textsecure_crypto_ecc_Curve25519_generatePrivateKey
(JNIEnv *env, jclass clazz, jbyteArray random)
(JNIEnv *env, jclass clazz, jbyteArray random, jboolean ephemeral)
{
uint8_t* privateKey = (uint8_t*)(*env)->GetByteArrayElements(env, random, 0);
privateKey[0] &= 248;
if (ephemeral) {
privateKey[0] |= 1;
}
privateKey[31] &= 127;
privateKey[31] |= 64;