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AEAD/ChaCha20/Poly1305 test added

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orignal 2018-06-13 12:25:32 -04:00
parent df60e78766
commit 6b9061515f
3 changed files with 68 additions and 3 deletions
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17
libi2pd/Crypto.cpp
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@ -1073,10 +1073,23 @@ namespace crypto
memcpy (buf, msg, msgLen);
chacha20 (buf, msgLen, nonce, key, 1);
// create Poly1305 message
std::vector<uint8_t> polyMsg(adLen + msgLen + 16);
std::vector<uint8_t> polyMsg(adLen + msgLen + 3*16);
size_t offset = 0;
memcpy (polyMsg.data (), ad, adLen); offset += adLen;
uint8_t padding[16]; memset (padding, 0, 16);
memcpy (polyMsg.data (), ad, adLen); offset += adLen; // additional authenticated data
auto rem = adLen & 0x0F; // %16
if (rem)
{
// padding1
memcpy (polyMsg.data () + offset, padding, rem); offset += rem;
}
memcpy (polyMsg.data () + offset, buf, msgLen); offset += msgLen; // encrypted data
rem = msgLen & 0x0F; // %16
if (rem)
{
// padding2
memcpy (polyMsg.data () + offset, padding, rem); offset += rem;
}
htole64buf (polyMsg.data () + offset, adLen); offset += 8;
htole64buf (polyMsg.data () + offset, msgLen); offset += 8;
// calculate Poly1305 tag and write in after encrypted data