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AES/ElGamal tags per local destination

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orignal 2014-10-06 20:18:18 -04:00
parent 3787dc80d9
commit 93c1a0760d
12 changed files with 151 additions and 215 deletions
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38
Garlic.h
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@ -11,7 +11,6 @@
#include "aes.h"
#include "I2NPProtocol.h"
#include "LeaseSet.h"
#include "Tunnel.h"
#include "Queue.h"
#include "Identity.h"
@ -40,22 +39,25 @@ namespace garlic
const int TAGS_EXPIRATION_TIMEOUT = 900; // 15 minutes
typedef i2p::data::Tag<32> SessionTag;
class GarlicDestination
class GarlicDestination: public i2p::data::LocalDestination
{
public:
GarlicDestination (i2p::data::LocalDestination * localDestination = nullptr):
m_LocalDestination (localDestination) {};
GarlicDestination () {};
~GarlicDestination ();
void AddSessionKey (const uint8_t * key, const uint8_t * tag); // one tag
void HandleGarlicMessage (I2NPMessage * msg);
private:
void HandleAESBlock (uint8_t * buf, size_t len, i2p::tunnel::InboundTunnel * from);
void HandleGarlicPayload (uint8_t * buf, size_t len, i2p::tunnel::InboundTunnel * from);
private:
i2p::crypto::CBCDecryption m_Decryption;
std::map<SessionTag, const uint8_t *> m_Tags; // tag->key, if null use key from decryption
i2p::data::LocalDestination * m_LocalDestination;
};
class GarlicRoutingSession
@ -95,22 +97,7 @@ namespace garlic
};
class GarlicRouting
{
class SessionDecryption: public i2p::crypto::CBCDecryption
{
public:
SessionDecryption (): m_TagCount (0) {};
void SetTagCount (int tagCount) { m_TagCount = tagCount; };
void AddTagCount (int tagCount) { m_TagCount += tagCount; };
int GetTagCount () const { return m_TagCount; };
bool UseTag () { m_TagCount--; return m_TagCount > 0; };
private:
int m_TagCount;
};
{
public:
GarlicRouting ();
@ -119,7 +106,6 @@ namespace garlic
void Start ();
void Stop ();
void PostI2NPMsg (I2NPMessage * msg);
void AddSessionKey (const uint8_t * key, const uint8_t * tag); // one tag
GarlicRoutingSession * GetRoutingSession (const i2p::data::RoutingDestination& destination, int numTags);
I2NPMessage * WrapSingleMessage (const i2p::data::RoutingDestination& destination, I2NPMessage * msg);
@ -133,9 +119,7 @@ namespace garlic
void Run ();
void HandleGarlicMessage (I2NPMessage * msg);
void HandleDeliveryStatusMessage (I2NPMessage * msg);
void HandleAESBlock (uint8_t * buf, size_t len, SessionDecryption * decryption, i2p::tunnel::InboundTunnel * from);
void HandleGarlicPayload (uint8_t * buf, size_t len, i2p::tunnel::InboundTunnel * from);
private:
bool m_IsRunning;
@ -146,10 +130,6 @@ namespace garlic
std::map<i2p::data::IdentHash, GarlicRoutingSession *> m_Sessions;
std::mutex m_CreatedSessionsMutex;
std::map<uint32_t, GarlicRoutingSession *> m_CreatedSessions; // msgID -> session
// incoming session
// multiple tags refer to one decyption
std::mutex m_SessionsTagsMutex;
std::map<SessionTag, SessionDecryption *> m_SessionTags; // tag -> decryption
};
extern GarlicRouting routing;