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don't create EVP_CIPHER_CTX for each ChaCha20
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orignal 2025-01-15 21:13:50 -05:00
parent 8c555fe592
commit 4bb82110ab
6 changed files with 63 additions and 21 deletions
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20
libi2pd/SSU2Session.cpp
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@ -682,7 +682,7 @@ namespace transport
}
const uint8_t nonce[12] = {0};
uint64_t headerX[2];
i2p::crypto::ChaCha20 (buf + 16, 16, i2p::context.GetSSU2IntroKey (), nonce, (uint8_t *)headerX);
m_Server.ChaCha20 (buf + 16, 16, i2p::context.GetSSU2IntroKey (), nonce, (uint8_t *)headerX);
LogPrint (eLogWarning, "SSU2: Unexpected PeerTest message SourceConnID=", connID, " DestConnID=", headerX[0]);
break;
}
@ -748,7 +748,7 @@ namespace transport
payloadSize += 16;
header.ll[0] ^= CreateHeaderMask (m_Address->i, payload + (payloadSize - 24));
header.ll[1] ^= CreateHeaderMask (m_Address->i, payload + (payloadSize - 12));
i2p::crypto::ChaCha20 (headerX, 48, m_Address->i, nonce, headerX);
m_Server.ChaCha20 (headerX, 48, m_Address->i, nonce, headerX);
m_NoiseState->MixHash (payload, payloadSize); // h = SHA256(h || encrypted payload from Session Request) for SessionCreated
m_SentHandshakePacket->payloadSize = payloadSize;
// send
@ -775,7 +775,7 @@ namespace transport
}
const uint8_t nonce[12] = {0};
uint8_t headerX[48];
i2p::crypto::ChaCha20 (buf + 16, 48, i2p::context.GetSSU2IntroKey (), nonce, headerX);
m_Server.ChaCha20 (buf + 16, 48, i2p::context.GetSSU2IntroKey (), nonce, headerX);
memcpy (&m_DestConnID, headerX, 8);
uint64_t token;
memcpy (&token, headerX + 8, 8);
@ -874,7 +874,7 @@ namespace transport
m_NoiseState->MixHash (payload, payloadSize); // h = SHA256(h || encrypted Noise payload from Session Created)
header.ll[0] ^= CreateHeaderMask (i2p::context.GetSSU2IntroKey (), payload + (payloadSize - 24));
header.ll[1] ^= CreateHeaderMask (kh2, payload + (payloadSize - 12));
i2p::crypto::ChaCha20 (headerX, 48, kh2, nonce, headerX);
m_Server.ChaCha20 (headerX, 48, kh2, nonce, headerX);
m_State = eSSU2SessionStateSessionCreatedSent;
m_SentHandshakePacket->payloadSize = payloadSize;
// send
@ -902,7 +902,7 @@ namespace transport
m_HandshakeInterval = i2p::util::GetMillisecondsSinceEpoch () - m_HandshakeInterval;
const uint8_t nonce[12] = {0};
uint8_t headerX[48];
i2p::crypto::ChaCha20 (buf + 16, 48, kh2, nonce, headerX);
m_Server.ChaCha20 (buf + 16, 48, kh2, nonce, headerX);
// KDF for SessionCreated
m_NoiseState->MixHash ( { {header.buf, 16}, {headerX, 16} } ); // h = SHA256(h || header)
m_NoiseState->MixHash (headerX + 16, 32); // h = SHA256(h || bepk);
@ -1264,7 +1264,7 @@ namespace transport
header.ll[0] ^= CreateHeaderMask (m_Address->i, payload + (payloadSize - 24));
header.ll[1] ^= CreateHeaderMask (m_Address->i, payload + (payloadSize - 12));
memset (nonce, 0, 12);
i2p::crypto::ChaCha20 (h + 16, 16, m_Address->i, nonce, h + 16);
m_Server.ChaCha20 (h + 16, 16, m_Address->i, nonce, h + 16);
// send
if (m_Server.AddPendingOutgoingSession (shared_from_this ()))
m_Server.Send (header.buf, 16, h + 16, 16, payload, payloadSize, m_RemoteEndpoint);
@ -1286,7 +1286,7 @@ namespace transport
uint8_t nonce[12] = {0};
uint8_t h[32];
memcpy (h, header.buf, 16);
i2p::crypto::ChaCha20 (buf + 16, 16, i2p::context.GetSSU2IntroKey (), nonce, h + 16);
m_Server.ChaCha20 (buf + 16, 16, i2p::context.GetSSU2IntroKey (), nonce, h + 16);
memcpy (&m_DestConnID, h + 16, 8);
// decrypt
CreateNonce (be32toh (header.h.packetNum), nonce);
@ -1338,7 +1338,7 @@ namespace transport
header.ll[0] ^= CreateHeaderMask (i2p::context.GetSSU2IntroKey (), payload + (payloadSize - 24));
header.ll[1] ^= CreateHeaderMask (i2p::context.GetSSU2IntroKey (), payload + (payloadSize - 12));
memset (nonce, 0, 12);
i2p::crypto::ChaCha20 (h + 16, 16, i2p::context.GetSSU2IntroKey (), nonce, h + 16);
m_Server.ChaCha20 (h + 16, 16, i2p::context.GetSSU2IntroKey (), nonce, h + 16);
// send
m_Server.Send (header.buf, 16, h + 16, 16, payload, payloadSize, m_RemoteEndpoint);
}
@ -1362,7 +1362,7 @@ namespace transport
}
uint8_t nonce[12] = {0};
uint64_t headerX[2]; // sourceConnID, token
i2p::crypto::ChaCha20 (buf + 16, 16, m_Address->i, nonce, (uint8_t *)headerX);
m_Server.ChaCha20 (buf + 16, 16, m_Address->i, nonce, (uint8_t *)headerX);
uint64_t token = headerX[1];
if (token)
m_Server.UpdateOutgoingToken (m_RemoteEndpoint, token, i2p::util::GetSecondsSinceEpoch () + SSU2_TOKEN_EXPIRATION_TIMEOUT);
@ -1411,7 +1411,7 @@ namespace transport
}
uint8_t nonce[12] = {0};
uint64_t headerX[2]; // sourceConnID, token
i2p::crypto::ChaCha20 (buf + 16, 16, i2p::context.GetSSU2IntroKey (), nonce, (uint8_t *)headerX);
m_Server.ChaCha20 (buf + 16, 16, i2p::context.GetSSU2IntroKey (), nonce, (uint8_t *)headerX);
m_DestConnID = headerX[0];
// decrypt and handle payload
uint8_t * payload = buf + 32;