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TunnelDecryption for transit tunnel

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orignal 2014-05-15 17:55:09 -04:00
parent 11ac6712e7
commit 7754968e7a
3 changed files with 6 additions and 15 deletions
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12
TransitTunnel.cpp
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@ -17,20 +17,12 @@ namespace tunnel
m_TunnelID (receiveTunnelID), m_NextTunnelID (nextTunnelID), m_TunnelID (receiveTunnelID), m_NextTunnelID (nextTunnelID),
m_NextIdent (nextIdent), m_NumTransmittedBytes (0) m_NextIdent (nextIdent), m_NumTransmittedBytes (0)
{ {
m_ECBEncryption.SetKey (ivKey); m_Encryption.SetKeys (layerKey, ivKey);
m_CBCEncryption.SetKey (layerKey);
} }
void TransitTunnel::EncryptTunnelMsg (I2NPMessage * tunnelMsg) void TransitTunnel::EncryptTunnelMsg (I2NPMessage * tunnelMsg)
{ {
uint8_t * payload = tunnelMsg->GetPayload () + 4; m_Encryption.Encrypt (tunnelMsg->GetPayload () + 4);
m_ECBEncryption.Encrypt ((i2p::crypto::ChipherBlock *)payload, (i2p::crypto::ChipherBlock *)payload); // iv
m_CBCEncryption.SetIV (payload);
m_CBCEncryption.Encrypt (payload + 16, TUNNEL_DATA_ENCRYPTED_SIZE, payload + 16); // payload
m_ECBEncryption.Encrypt((i2p::crypto::ChipherBlock *)payload, (i2p::crypto::ChipherBlock *)payload); // double iv encryption
} }
void TransitTunnel::HandleTunnelDataMsg (i2p::I2NPMessage * tunnelMsg) void TransitTunnel::HandleTunnelDataMsg (i2p::I2NPMessage * tunnelMsg)

3
TransitTunnel.h
View file

@ -37,8 +37,7 @@ namespace tunnel
i2p::data::IdentHash m_NextIdent; i2p::data::IdentHash m_NextIdent;
size_t m_NumTransmittedBytes; size_t m_NumTransmittedBytes;
i2p::crypto::ECBEncryption m_ECBEncryption; i2p::crypto::TunnelEncryption m_Encryption;
i2p::crypto::CBCEncryption m_CBCEncryption;
}; };
class TransitTunnelGateway: public TransitTunnel class TransitTunnelGateway: public TransitTunnel

4
aes.h
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@ -143,7 +143,7 @@ namespace crypto
{ {
public: public:
void SetKeys (uint8_t * layerKey, uint8_t * ivKey) void SetKeys (const uint8_t * layerKey, const uint8_t * ivKey)
{ {
m_LayerEncryption.SetKey (layerKey); m_LayerEncryption.SetKey (layerKey);
m_IVEncryption.SetKey (ivKey); m_IVEncryption.SetKey (ivKey);
@ -165,7 +165,7 @@ namespace crypto
{ {
public: public:
void SetKeys (uint8_t * layerKey, uint8_t * ivKey) void SetKeys (const uint8_t * layerKey, const uint8_t * ivKey)
{ {
m_LayerDecryption.SetKey (layerKey); m_LayerDecryption.SetKey (layerKey);
m_IVDecryption.SetKey (ivKey); m_IVDecryption.SetKey (ivKey);