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68 lines
2.1 KiB
68 lines
2.1 KiB
#ifndef ECIES_X25519_AEAD_RATCHET_SESSION_H__ |
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#define ECIES_X25519_AEAD_RATCHET_SESSION_H__ |
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#include <string.h> |
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#include <inttypes.h> |
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#include <functional> |
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#include <vector> |
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#include "Identity.h" |
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#include "Crypto.h" |
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#include "Garlic.h" |
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namespace i2p |
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{ |
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namespace garlic |
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{ |
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enum ECIESx25519BlockType |
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{ |
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eECIESx25519BlkDateTime = 0, |
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eECIESx25519BlkSessionID = 1, |
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eECIESx25519BlkTermination = 4, |
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eECIESx25519BlkOptions = 5, |
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eECIESx25519BlkNextSessionKey = 7, |
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eECIESx25519BlkGalicClove = 11, |
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eECIESx25519BlkPadding = 254 |
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}; |
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class ECIESX25519AEADRatchetSession: public GarlicRoutingSession |
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{ |
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enum SessionState |
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{ |
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eSessionStateNew =0, |
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eSessionStateNewSessionReceived |
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}; |
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public: |
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typedef std::function<void (const uint8_t * buf, size_t len)> CloveHandler; |
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ECIESX25519AEADRatchetSession (GarlicDestination * owner); |
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~ECIESX25519AEADRatchetSession (); |
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std::shared_ptr<I2NPMessage> WrapSingleMessage (std::shared_ptr<const I2NPMessage> msg); |
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bool NewIncomingSession (const uint8_t * buf, size_t len, CloveHandler handleClove); |
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const uint8_t * GetRemoteStaticKey () const { return m_RemoteStaticKey; } |
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void SetRemoteStaticKey (const uint8_t * key) { memcpy (m_RemoteStaticKey, key, 32); } |
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private: |
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void MixHash (const uint8_t * buf, size_t len); |
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void DHInitialize (const uint8_t * rootKey, const uint8_t * k, uint8_t * nextRootKey, uint8_t * ck); // ck is 64 buytes |
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void HandlePayload (const uint8_t * buf, size_t len, CloveHandler& handleClove); |
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bool NewOutgoingSessionMessage (const uint8_t * payload, size_t len, uint8_t * out, size_t outLen); |
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bool NewSessionReplyMessage (const uint8_t * payload, size_t len, uint8_t * out, size_t outLen); |
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std::vector<uint8_t> CreatePayload (std::shared_ptr<const I2NPMessage> msg); |
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private: |
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uint8_t m_H[32], m_CK[64] /* [chainkey, key] */, m_RemoteStaticKey[32]; |
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i2p::crypto::X25519Keys m_EphemeralKeys; |
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SessionState m_State = eSessionStateNew; |
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}; |
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} |
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} |
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#endif
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