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Stop handshake when key is identity

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This commit is contained in:
Matthias Schiffer 2012-03-28 23:11:02 +02:00
parent 0c1296cb86
commit 63e123738a
1 changed files with 6 additions and 0 deletions
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6
src/protocol_ec25519_fhmqvc_xsalsa20_poly1305.c
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@ -336,6 +336,9 @@ static void respond_handshake(fastd_context *ctx, fastd_peer *peer) {
ecc_25519_add(&work, &workX, &work); ecc_25519_add(&work, &workX, &work);
ecc_25519_scalarmult(&work, &s, &work); ecc_25519_scalarmult(&work, &s, &work);
if (ecc_25519_is_identity(&work))
return;
ecc_25519_store(&peer->protocol_state->accepting_handshake->sigma, &work); ecc_25519_store(&peer->protocol_state->accepting_handshake->sigma, &work);
memcpy(hashinput+4*PUBLICKEYBYTES, peer->protocol_state->accepting_handshake->sigma.p, PUBLICKEYBYTES); memcpy(hashinput+4*PUBLICKEYBYTES, peer->protocol_state->accepting_handshake->sigma.p, PUBLICKEYBYTES);
@ -419,6 +422,9 @@ static void finish_handshake(fastd_context *ctx, fastd_peer *peer, uint8_t t[HMA
ecc_25519_add(&work, &workY, &work); ecc_25519_add(&work, &workY, &work);
ecc_25519_scalarmult(&work, &s, &work); ecc_25519_scalarmult(&work, &s, &work);
if (ecc_25519_is_identity(&work))
return;
ecc_25519_store(&peer->protocol_state->initiating_handshake->sigma, &work); ecc_25519_store(&peer->protocol_state->initiating_handshake->sigma, &work);
memcpy(hashinput+4*PUBLICKEYBYTES, peer->protocol_state->initiating_handshake->sigma.p, PUBLICKEYBYTES); memcpy(hashinput+4*PUBLICKEYBYTES, peer->protocol_state->initiating_handshake->sigma.p, PUBLICKEYBYTES);