I2P: End-to-End encrypted and anonymous Internet https://i2pd.website/
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#ifndef IDENTITY_H__
#define IDENTITY_H__
#include <inttypes.h>
#include <string.h>
#include "ElGamal.h"
namespace i2p
{
namespace data
{
#pragma pack(1)
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struct DHKeysPair // transient keys for transport sessions
{
uint8_t publicKey[256];
uint8_t privateKey[256];
};
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struct Keys
{
uint8_t privateKey[256];
uint8_t signingPrivateKey[20];
uint8_t publicKey[256];
uint8_t signingKey[128];
};
struct Identity
{
uint8_t publicKey[256];
uint8_t signingKey[128];
uint8_t certificate[3];
Identity& operator=(const Keys& keys);
};
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struct PrivateKeys // for eepsites
{
Identity pub;
uint8_t privateKey[256];
uint8_t signingPrivateKey[20];
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PrivateKeys& operator=(const Keys& keys);
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};
#pragma pack()
class IdentHash
{
public:
IdentHash (const uint8_t * hash) { memcpy (m_Hash, hash, 32); };
IdentHash (const IdentHash& ) = default;
#ifndef _WIN32 // FIXME!!! msvs 2013 can't compile it
IdentHash (IdentHash&& ) = default;
#endif
IdentHash () = default;
IdentHash& operator= (const IdentHash& ) = default;
#ifndef _WIN32
IdentHash& operator= (IdentHash&& ) = default;
#endif
uint8_t * operator()() { return m_Hash; };
const uint8_t * operator()() const { return m_Hash; };
operator uint8_t * () { return m_Hash; };
operator const uint8_t * () const { return m_Hash; };
bool operator== (const IdentHash& other) const { return !memcmp (m_Hash, other.m_Hash, 32); };
bool operator< (const IdentHash& other) const { return memcmp (m_Hash, other.m_Hash, 32) < 0; };
private:
uint8_t m_Hash[32];
};
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IdentHash CalculateIdentHash (const Identity& identity);
Keys CreateRandomKeys ();
void CreateRandomDHKeysPair (DHKeysPair * keys); // for transport sessions
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// kademlia
struct RoutingKey
{
uint8_t hash[32];
};
struct XORMetric
{
uint8_t metric[32];
void SetMin () { memset (metric, 0, 32); };
void SetMax () { memset (metric, 0xFF, 32); };
bool operator< (const XORMetric& other) const { return memcmp (metric, other.metric, 32) < 0; };
};
RoutingKey CreateRoutingKey (const IdentHash& ident);
XORMetric operator^(const RoutingKey& key1, const RoutingKey& key2);
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// destination for delivery instuctions
class RoutingDestination
{
public:
RoutingDestination (): m_ElGamalEncryption (nullptr) {};
virtual ~RoutingDestination () { delete m_ElGamalEncryption; };
virtual const IdentHash& GetIdentHash () const = 0;
virtual const uint8_t * GetEncryptionPublicKey () const = 0;
virtual bool IsDestination () const = 0; // for garlic
i2p::crypto::ElGamalEncryption * GetElGamalEncryption () const
{
if (!m_ElGamalEncryption)
m_ElGamalEncryption = new i2p::crypto::ElGamalEncryption (GetEncryptionPublicKey ());
return m_ElGamalEncryption;
}
private:
mutable i2p::crypto::ElGamalEncryption * m_ElGamalEncryption; // use lazy initialization
};
class LocalDestination
{
public:
virtual const IdentHash& GetIdentHash () const = 0;
virtual const uint8_t * GetEncryptionPrivateKey () const = 0;
virtual const uint8_t * GetEncryptionPublicKey () const = 0;
virtual void UpdateLeaseSet () = 0; // LeaseSet must be updated
};
}
}
#endif