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extract ret code per hop

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orignal 2021-07-08 16:39:38 -04:00
parent ed0c2e68a5
commit d73b42b726
3 changed files with 24 additions and 21 deletions
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17
libi2pd/TunnelConfig.h
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@ -40,9 +40,9 @@ namespace tunnel
void SetNext (TunnelHopConfig * n);
void SetPrev (TunnelHopConfig * p);
virtual bool IsECIES () const { return false; };
virtual uint8_t GetRetCode (const uint8_t * records) const = 0;
virtual void CreateBuildRequestRecord (uint8_t * record, uint32_t replyMsgID, BN_CTX * ctx) = 0;
virtual bool DecryptBuildResponseRecord (const uint8_t * encrypted, uint8_t * clearText) const = 0;
virtual bool DecryptBuildResponseRecord (uint8_t * records) const = 0;
virtual void DecryptRecord (uint8_t * records, int index) const; // AES
};
@ -50,15 +50,16 @@ namespace tunnel
{
ElGamalTunnelHopConfig (std::shared_ptr<const i2p::data::IdentityEx> r):
TunnelHopConfig (r) {};
uint8_t GetRetCode (const uint8_t * records) const
{ return (records + recordIndex*TUNNEL_BUILD_RECORD_SIZE)[BUILD_RESPONSE_RECORD_RET_OFFSET]; };
void CreateBuildRequestRecord (uint8_t * record, uint32_t replyMsgID, BN_CTX * ctx);
bool DecryptBuildResponseRecord (const uint8_t * encrypted, uint8_t * clearText) const;
bool DecryptBuildResponseRecord (uint8_t * records) const;
};
struct ECIESTunnelHopConfig: public TunnelHopConfig, public i2p::crypto::NoiseSymmetricState
{
ECIESTunnelHopConfig (std::shared_ptr<const i2p::data::IdentityEx> r):
TunnelHopConfig (r) {};
bool IsECIES () const { return true; };
void EncryptECIES (const uint8_t * clearText, size_t len, uint8_t * encrypted);
bool DecryptECIES (const uint8_t * key, const uint8_t * nonce, const uint8_t * encrypted, size_t len, uint8_t * clearText) const;
};
@ -67,16 +68,20 @@ namespace tunnel
{
LongECIESTunnelHopConfig (std::shared_ptr<const i2p::data::IdentityEx> r):
ECIESTunnelHopConfig (r) {};
uint8_t GetRetCode (const uint8_t * records) const
{ return (records + recordIndex*TUNNEL_BUILD_RECORD_SIZE)[ECIES_BUILD_RESPONSE_RECORD_RET_OFFSET]; };
void CreateBuildRequestRecord (uint8_t * record, uint32_t replyMsgID, BN_CTX * ctx);
bool DecryptBuildResponseRecord (const uint8_t * encrypted, uint8_t * clearText) const;
bool DecryptBuildResponseRecord (uint8_t * records) const;
};
struct ShortECIESTunnelHopConfig: public ECIESTunnelHopConfig
{
ShortECIESTunnelHopConfig (std::shared_ptr<const i2p::data::IdentityEx> r):
ECIESTunnelHopConfig (r) {};
uint8_t GetRetCode (const uint8_t * records) const
{ return (records + recordIndex*SHORT_TUNNEL_BUILD_RECORD_SIZE)[ECIES_BUILD_RESPONSE_RECORD_RET_OFFSET]; }; // TODO
void CreateBuildRequestRecord (uint8_t * record, uint32_t replyMsgID, BN_CTX * ctx);
bool DecryptBuildResponseRecord (const uint8_t * encrypted, uint8_t * clearText) const;
bool DecryptBuildResponseRecord (uint8_t * records) const;
void DecryptRecord (uint8_t * records, int index) const override; // Chacha20
};