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Signed-off-by: R4SAS <r4sas@i2pmail.org>
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R4SAS 2021-11-27 23:30:35 +03:00
parent 94661f697b
commit edc0162163
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GPG key ID: 66F6C87B98EBCFE2
66 changed files with 998 additions and 999 deletions
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55
libi2pd/ECIESX25519AEADRatchetSession.h
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@ -1,4 +1,3 @@
/*
* Copyright (c) 2013-2021, The PurpleI2P Project
*
@ -28,7 +27,7 @@ namespace garlic
{
const int ECIESX25519_RESTART_TIMEOUT = 120; // number of second since session creation we can restart session after
const int ECIESX25519_INACTIVITY_TIMEOUT = 90; // number of seconds we receive nothing and should restart if we can
const int ECIESX25519_SEND_INACTIVITY_TIMEOUT = 5000; // number of milliseconds we can send empty(pyaload only) packet after
const int ECIESX25519_SEND_INACTIVITY_TIMEOUT = 5000; // number of milliseconds we can send empty(pyaload only) packet after
const int ECIESX25519_SEND_EXPIRATION_TIMEOUT = 480; // in seconds
const int ECIESX25519_RECEIVE_EXPIRATION_TIMEOUT = 600; // in seconds
const int ECIESX25519_PREVIOUS_TAGSET_EXPIRATION_TIMEOUT = 180; // 180
@ -46,7 +45,7 @@ namespace garlic
RatchetTagSet () {};
virtual ~RatchetTagSet () {};
void DHInitialize (const uint8_t * rootKey, const uint8_t * k);
void NextSessionTagRatchet ();
uint64_t GetNextSessionTag ();
@ -57,14 +56,14 @@ namespace garlic
int GetTagSetID () const { return m_TagSetID; };
void SetTagSetID (int tagsetID) { m_TagSetID = tagsetID; };
private:
i2p::data::Tag<64> m_SessionTagKeyData;
uint8_t m_SessTagConstant[32], m_SymmKeyCK[32], m_CurrentSymmKeyCK[64], m_NextRootKey[32];
int m_NextIndex, m_NextSymmKeyIndex;
std::unordered_map<int, i2p::data::Tag<32> > m_ItermediateSymmKeys;
int m_TagSetID = 0;
};
@ -74,27 +73,27 @@ namespace garlic
{
public:
ReceiveRatchetTagSet (std::shared_ptr<ECIESX25519AEADRatchetSession> session, bool isNS = false):
ReceiveRatchetTagSet (std::shared_ptr<ECIESX25519AEADRatchetSession> session, bool isNS = false):
m_Session (session), m_IsNS (isNS) {};
bool IsNS () const { return m_IsNS; };
std::shared_ptr<ECIESX25519AEADRatchetSession> GetSession () { return m_Session; };
void SetTrimBehind (int index) { if (index > m_TrimBehindIndex) m_TrimBehindIndex = index; };
void SetTrimBehind (int index) { if (index > m_TrimBehindIndex) m_TrimBehindIndex = index; };
int GetTrimBehind () const { return m_TrimBehindIndex; };
void Expire ();
bool IsExpired (uint64_t ts) const;
bool IsExpired (uint64_t ts) const;
virtual bool IsIndexExpired (int index) const;
virtual bool HandleNextMessage (uint8_t * buf, size_t len, int index);
private:
int m_TrimBehindIndex = 0;
std::shared_ptr<ECIESX25519AEADRatchetSession> m_Session;
bool m_IsNS;
uint64_t m_ExpirationTimestamp = 0;
};
};
class SymmetricKeyTagSet: public ReceiveRatchetTagSet
{
@ -104,13 +103,13 @@ namespace garlic
bool IsIndexExpired (int index) const { return false; };
bool HandleNextMessage (uint8_t * buf, size_t len, int index);
private:
GarlicDestination * m_Destination;
uint8_t m_Key[32];
};
};
enum ECIESx25519BlockType
{
eECIESx25519BlkDateTime = 0,
@ -128,7 +127,7 @@ namespace garlic
const uint8_t ECIESX25519_NEXT_KEY_REVERSE_KEY_FLAG = 0x02;
const uint8_t ECIESX25519_NEXT_KEY_REQUEST_REVERSE_KEY_FLAG = 0x04;
class ECIESX25519AEADRatchetSession: public GarlicRoutingSession,
class ECIESX25519AEADRatchetSession: public GarlicRoutingSession,
private i2p::crypto::NoiseSymmetricState,
public std::enable_shared_from_this<ECIESX25519AEADRatchetSession>
{
@ -158,10 +157,10 @@ namespace garlic
bool HandleNextMessage (uint8_t * buf, size_t len, std::shared_ptr<ReceiveRatchetTagSet> receiveTagset, int index = 0);
std::shared_ptr<I2NPMessage> WrapSingleMessage (std::shared_ptr<const I2NPMessage> msg);
std::shared_ptr<I2NPMessage> WrapOneTimeMessage (std::shared_ptr<const I2NPMessage> msg);
const uint8_t * GetRemoteStaticKey () const { return m_RemoteStaticKey; }
void SetRemoteStaticKey (const uint8_t * key) { memcpy (m_RemoteStaticKey, key, 32); }
void Terminate () { m_IsTerminated = true; }
void SetDestination (const i2p::data::IdentHash& dest) // TODO:
{
@ -171,19 +170,19 @@ namespace garlic
bool CheckExpired (uint64_t ts); // true is expired
bool CanBeRestarted (uint64_t ts) const { return ts > m_SessionCreatedTimestamp + ECIESX25519_RESTART_TIMEOUT; }
bool IsInactive (uint64_t ts) const { return ts > m_LastActivityTimestamp + ECIESX25519_INACTIVITY_TIMEOUT && CanBeRestarted (ts); }
bool IsRatchets () const { return true; };
bool IsReadyToSend () const { return m_State != eSessionStateNewSessionSent; };
bool IsTerminated () const { return m_IsTerminated; }
uint64_t GetLastActivityTimestamp () const { return m_LastActivityTimestamp; };
protected:
protected:
i2p::crypto::NoiseSymmetricState& GetNoiseState () { return *this; };
void SetNoiseState (const i2p::crypto::NoiseSymmetricState& state) { GetNoiseState () = state; };
void CreateNonce (uint64_t seqn, uint8_t * nonce);
void HandlePayload (const uint8_t * buf, size_t len, const std::shared_ptr<ReceiveRatchetTagSet>& receiveTagset, int index);
private:
bool GenerateEphemeralKeysAndEncode (uint8_t * buf); // buf is 32 bytes
@ -198,7 +197,7 @@ namespace garlic
bool NewSessionReplyMessage (const uint8_t * payload, size_t len, uint8_t * out, size_t outLen);
bool NextNewSessionReplyMessage (const uint8_t * payload, size_t len, uint8_t * out, size_t outLen);
bool NewExistingSessionMessage (const uint8_t * payload, size_t len, uint8_t * out, size_t outLen);
size_t CreatePayload (std::shared_ptr<const I2NPMessage> msg, bool first, uint8_t * payload);
size_t CreateGarlicClove (std::shared_ptr<const I2NPMessage> msg, uint8_t * buf, size_t len);
size_t CreateLeaseSetClove (std::shared_ptr<const i2p::data::LocalLeaseSet> ls, uint64_t ts, uint8_t * buf, size_t len);
@ -221,7 +220,7 @@ namespace garlic
bool m_SendReverseKey = false, m_SendForwardKey = false, m_IsTerminated = false;
std::unique_ptr<DHRatchet> m_NextReceiveRatchet, m_NextSendRatchet;
uint8_t m_PaddingSizes[32], m_NextPaddingSize;
public:
// for HTTP only
@ -240,12 +239,12 @@ namespace garlic
RouterIncomingRatchetSession (const i2p::crypto::NoiseSymmetricState& initState);
bool HandleNextMessage (const uint8_t * buf, size_t len);
i2p::crypto::NoiseSymmetricState& GetCurrentNoiseState () { return m_CurrentNoiseState; };
private:
i2p::crypto::NoiseSymmetricState m_CurrentNoiseState;
};
};
std::shared_ptr<I2NPMessage> WrapECIESX25519Message (std::shared_ptr<const I2NPMessage> msg, const uint8_t * key, uint64_t tag);
std::shared_ptr<I2NPMessage> WrapECIESX25519MessageForRouter (std::shared_ptr<const I2NPMessage> msg, const uint8_t * routerPublicKey);
}