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DecryptRecord per tunnel hop

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orignal 2021-07-07 21:16:30 -04:00
parent 847225c6bf
commit ed0c2e68a5
3 changed files with 41 additions and 27 deletions
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19
libi2pd/TunnelConfig.h
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@ -42,7 +42,8 @@ namespace tunnel
virtual bool IsECIES () const { return false; };
virtual void CreateBuildRequestRecord (uint8_t * record, uint32_t replyMsgID, BN_CTX * ctx) = 0;
virtual bool DecryptBuildResponseRecord (const uint8_t * encrypted, uint8_t * clearText) = 0;
virtual bool DecryptBuildResponseRecord (const uint8_t * encrypted, uint8_t * clearText) const = 0;
virtual void DecryptRecord (uint8_t * records, int index) const; // AES
};
struct ElGamalTunnelHopConfig: public TunnelHopConfig
@ -50,7 +51,7 @@ namespace tunnel
ElGamalTunnelHopConfig (std::shared_ptr<const i2p::data::IdentityEx> r):
TunnelHopConfig (r) {};
void CreateBuildRequestRecord (uint8_t * record, uint32_t replyMsgID, BN_CTX * ctx);
bool DecryptBuildResponseRecord (const uint8_t * encrypted, uint8_t * clearText);
bool DecryptBuildResponseRecord (const uint8_t * encrypted, uint8_t * clearText) const;
};
struct ECIESTunnelHopConfig: public TunnelHopConfig, public i2p::crypto::NoiseSymmetricState
@ -59,7 +60,7 @@ namespace tunnel
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 * encrypted, size_t len, uint8_t * clearText);
bool DecryptECIES (const uint8_t * key, const uint8_t * nonce, const uint8_t * encrypted, size_t len, uint8_t * clearText) const;
};
struct LongECIESTunnelHopConfig: public ECIESTunnelHopConfig
@ -67,7 +68,7 @@ namespace tunnel
LongECIESTunnelHopConfig (std::shared_ptr<const i2p::data::IdentityEx> r):
ECIESTunnelHopConfig (r) {};
void CreateBuildRequestRecord (uint8_t * record, uint32_t replyMsgID, BN_CTX * ctx);
bool DecryptBuildResponseRecord (const uint8_t * encrypted, uint8_t * clearText);
bool DecryptBuildResponseRecord (const uint8_t * encrypted, uint8_t * clearText) const;
};
struct ShortECIESTunnelHopConfig: public ECIESTunnelHopConfig
@ -75,20 +76,21 @@ namespace tunnel
ShortECIESTunnelHopConfig (std::shared_ptr<const i2p::data::IdentityEx> r):
ECIESTunnelHopConfig (r) {};
void CreateBuildRequestRecord (uint8_t * record, uint32_t replyMsgID, BN_CTX * ctx);
bool DecryptBuildResponseRecord (const uint8_t * encrypted, uint8_t * clearText);
bool DecryptBuildResponseRecord (const uint8_t * encrypted, uint8_t * clearText) const;
void DecryptRecord (uint8_t * records, int index) const override; // Chacha20
};
class TunnelConfig
{
public:
TunnelConfig (std::vector<std::shared_ptr<const i2p::data::IdentityEx> > peers) // inbound
TunnelConfig (const std::vector<std::shared_ptr<const i2p::data::IdentityEx> >& peers) // inbound
{
CreatePeers (peers);
m_LastHop->SetNextIdent (i2p::context.GetIdentHash ());
}
TunnelConfig (std::vector<std::shared_ptr<const i2p::data::IdentityEx> > peers,
TunnelConfig (const std::vector<std::shared_ptr<const i2p::data::IdentityEx> >& peers,
uint32_t replyTunnelID, const i2p::data::IdentHash& replyIdent) // outbound
{
CreatePeers (peers);
@ -180,8 +182,7 @@ namespace tunnel
private:
template<class Peers>
void CreatePeers (const Peers& peers)
void CreatePeers (const std::vector<std::shared_ptr<const i2p::data::IdentityEx> >& peers)
{
TunnelHopConfig * prev = nullptr;
for (const auto& it: peers)