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Symmetric Key Ratchet

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orignal 2020-02-08 21:51:02 -05:00
parent 8e53c30a00
commit 694d851cdb
2 changed files with 37 additions and 12 deletions
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12
libi2pd/ECIESX25519AEADRatchetSession.h
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@ -22,9 +22,14 @@ namespace garlic
void NextSessionTagRatchet ();
uint64_t GetNextSessionTag ();
int GetNextIndex () const { return m_NextIndex; };
const uint8_t * GetSymmKey (int index);
private:
void CalculateSymmKeyCK (int index);
private:
union
{
uint64_t ll[8];
@ -35,8 +40,8 @@ namespace garlic
uint64_t GetTag () const { return ll[4]; }; // tag = keydata[32:39]
} m_KeyData;
uint8_t m_SessTagConstant[32];
int m_NextIndex;
uint8_t m_SessTagConstant[32], m_SymmKeyCK[32], m_CurrentSymmKeyCK[64];
int m_NextIndex, m_NextSymmKeyIndex;
};
enum ECIESx25519BlockType
@ -103,7 +108,6 @@ namespace garlic
i2p::crypto::X25519Keys m_EphemeralKeys;
SessionState m_State = eSessionStateNew;
RatchetTagSet m_SendTagset, m_ReceiveTagset;
uint8_t m_SendKey[32], m_ReceiveKey[32];
std::unique_ptr<i2p::data::IdentHash> m_Destination;// TODO: might not need it
};
}