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genarate keys in CreateBuildRequestRecord

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orignal 2021-07-09 19:24:28 -04:00
parent c02a0c4da9
commit 59dd60f5cb
1 changed files with 11 additions and 5 deletions
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16
libi2pd/TunnelConfig.cpp
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@ -23,10 +23,6 @@ namespace tunnel
{ {
TunnelHopConfig::TunnelHopConfig (std::shared_ptr<const i2p::data::IdentityEx> r) TunnelHopConfig::TunnelHopConfig (std::shared_ptr<const i2p::data::IdentityEx> r)
{ {
RAND_bytes (layerKey, 32);
RAND_bytes (ivKey, 32);
RAND_bytes (replyKey, 32);
RAND_bytes (replyIV, 16);
RAND_bytes ((uint8_t *)&tunnelID, 4); RAND_bytes ((uint8_t *)&tunnelID, 4);
if (!tunnelID) tunnelID = 1; // tunnelID can't be zero if (!tunnelID) tunnelID = 1; // tunnelID can't be zero
isGateway = true; isGateway = true;
@ -89,6 +85,11 @@ namespace tunnel
void ElGamalTunnelHopConfig::CreateBuildRequestRecord (uint8_t * records, uint32_t replyMsgID) void ElGamalTunnelHopConfig::CreateBuildRequestRecord (uint8_t * records, uint32_t replyMsgID)
{ {
// generate keys
RAND_bytes (layerKey, 32);
RAND_bytes (ivKey, 32);
RAND_bytes (replyKey, 32);
RAND_bytes (replyIV, 16);
// fill clear text // fill clear text
uint8_t flag = 0; uint8_t flag = 0;
if (isGateway) flag |= TUNNEL_BUILD_RECORD_GATEWAY_FLAG; if (isGateway) flag |= TUNNEL_BUILD_RECORD_GATEWAY_FLAG;
@ -159,6 +160,11 @@ namespace tunnel
void LongECIESTunnelHopConfig::CreateBuildRequestRecord (uint8_t * records, uint32_t replyMsgID) void LongECIESTunnelHopConfig::CreateBuildRequestRecord (uint8_t * records, uint32_t replyMsgID)
{ {
// generate keys
RAND_bytes (layerKey, 32);
RAND_bytes (ivKey, 32);
RAND_bytes (replyKey, 32);
RAND_bytes (replyIV, 16);
// fill clear text // fill clear text
uint8_t flag = 0; uint8_t flag = 0;
if (isGateway) flag |= TUNNEL_BUILD_RECORD_GATEWAY_FLAG; if (isGateway) flag |= TUNNEL_BUILD_RECORD_GATEWAY_FLAG;
@ -216,7 +222,7 @@ namespace tunnel
// encrypt // encrypt
uint8_t * record = records + recordIndex*SHORT_TUNNEL_BUILD_RECORD_SIZE; uint8_t * record = records + recordIndex*SHORT_TUNNEL_BUILD_RECORD_SIZE;
EncryptECIES (clearText, SHORT_REQUEST_RECORD_CLEAR_TEXT_SIZE, record + SHORT_REQUEST_RECORD_ENCRYPTED_OFFSET); EncryptECIES (clearText, SHORT_REQUEST_RECORD_CLEAR_TEXT_SIZE, record + SHORT_REQUEST_RECORD_ENCRYPTED_OFFSET);
// derive reply and layer key // derive keys
i2p::crypto::HKDF (m_CK, nullptr, 0, "SMTunnelReplyKey", m_CK); i2p::crypto::HKDF (m_CK, nullptr, 0, "SMTunnelReplyKey", m_CK);
memcpy (replyKey, m_CK + 32, 32); memcpy (replyKey, m_CK + 32, 32);
i2p::crypto::HKDF (m_CK, nullptr, 0, "SMTunnelLayerKey", m_CK); i2p::crypto::HKDF (m_CK, nullptr, 0, "SMTunnelLayerKey", m_CK);