mirror of
https://github.com/PurpleI2P/i2pd.git
synced 2024-11-04 06:00:37 +00:00
276 lines
9.2 KiB
C++
276 lines
9.2 KiB
C++
#ifndef IDENTITY_H__
|
|
#define IDENTITY_H__
|
|
|
|
#include <inttypes.h>
|
|
#include <string.h>
|
|
#include <string>
|
|
#include <memory>
|
|
#include "util/base64.h"
|
|
#include "crypto/ElGamal.h"
|
|
#include "crypto/Signature.h"
|
|
|
|
namespace i2p
|
|
{
|
|
namespace data
|
|
{
|
|
template<int sz>
|
|
class Tag
|
|
{
|
|
public:
|
|
|
|
Tag (const uint8_t * buf) { memcpy (m_Buf, buf, sz); };
|
|
Tag (const Tag<sz>& ) = default;
|
|
#ifndef _WIN32 // FIXME!!! msvs 2013 can't compile it
|
|
Tag (Tag<sz>&& ) = default;
|
|
#endif
|
|
Tag () = default;
|
|
|
|
Tag<sz>& operator= (const Tag<sz>& ) = default;
|
|
#ifndef _WIN32
|
|
Tag<sz>& operator= (Tag<sz>&& ) = default;
|
|
#endif
|
|
|
|
uint8_t * operator()() { return m_Buf; };
|
|
const uint8_t * operator()() const { return m_Buf; };
|
|
|
|
operator uint8_t * () { return m_Buf; };
|
|
operator const uint8_t * () const { return m_Buf; };
|
|
|
|
const uint64_t * GetLL () const { return ll; };
|
|
|
|
bool operator== (const Tag<sz>& other) const { return !memcmp (m_Buf, other.m_Buf, sz); };
|
|
bool operator< (const Tag<sz>& other) const { return memcmp (m_Buf, other.m_Buf, sz) < 0; };
|
|
|
|
bool IsZero () const
|
|
{
|
|
for (int i = 0; i < sz/8; i++)
|
|
if (ll[i]) return false;
|
|
return true;
|
|
}
|
|
|
|
std::string ToBase64 () const
|
|
{
|
|
char str[sz*2];
|
|
int l = i2p::util::ByteStreamToBase64 (m_Buf, sz, str, sz*2);
|
|
str[l] = 0;
|
|
return std::string (str);
|
|
}
|
|
|
|
std::string ToBase32 () const
|
|
{
|
|
char str[sz*2];
|
|
int l = i2p::util::ByteStreamToBase32 (m_Buf, sz, str, sz*2);
|
|
str[l] = 0;
|
|
return std::string (str);
|
|
}
|
|
|
|
void FromBase32 (const std::string& s)
|
|
{
|
|
i2p::util::Base32ToByteStream (s.c_str (), s.length (), m_Buf, sz);
|
|
}
|
|
|
|
void FromBase64 (const std::string& s)
|
|
{
|
|
i2p::util::Base64ToByteStream (s.c_str (), s.length (), m_Buf, sz);
|
|
}
|
|
|
|
private:
|
|
|
|
union // 8 bytes alignment
|
|
{
|
|
uint8_t m_Buf[sz];
|
|
uint64_t ll[sz/8];
|
|
};
|
|
};
|
|
typedef Tag<32> IdentHash;
|
|
|
|
#pragma pack(1)
|
|
struct Keys
|
|
{
|
|
uint8_t privateKey[256];
|
|
uint8_t signingPrivateKey[20];
|
|
uint8_t publicKey[256];
|
|
uint8_t signingKey[128];
|
|
};
|
|
|
|
const uint8_t CERTIFICATE_TYPE_NULL = 0;
|
|
const uint8_t CERTIFICATE_TYPE_HASHCASH = 1;
|
|
const uint8_t CERTIFICATE_TYPE_HIDDEN = 2;
|
|
const uint8_t CERTIFICATE_TYPE_SIGNED = 3;
|
|
const uint8_t CERTIFICATE_TYPE_MULTIPLE = 4;
|
|
const uint8_t CERTIFICATE_TYPE_KEY = 5;
|
|
|
|
struct Identity
|
|
{
|
|
uint8_t publicKey[256];
|
|
uint8_t signingKey[128];
|
|
struct
|
|
{
|
|
uint8_t type;
|
|
uint16_t length;
|
|
} certificate;
|
|
|
|
Identity () = default;
|
|
Identity (const Keys& keys) { *this = keys; };
|
|
Identity& operator=(const Keys& keys);
|
|
size_t FromBuffer (const uint8_t * buf, size_t len);
|
|
IdentHash Hash () const;
|
|
};
|
|
#pragma pack()
|
|
Keys CreateRandomKeys ();
|
|
|
|
const size_t DEFAULT_IDENTITY_SIZE = sizeof (Identity); // 387 bytes
|
|
|
|
const uint16_t CRYPTO_KEY_TYPE_ELGAMAL = 0;
|
|
const uint16_t SIGNING_KEY_TYPE_DSA_SHA1 = 0;
|
|
const uint16_t SIGNING_KEY_TYPE_ECDSA_SHA256_P256 = 1;
|
|
const uint16_t SIGNING_KEY_TYPE_ECDSA_SHA384_P384 = 2;
|
|
const uint16_t SIGNING_KEY_TYPE_ECDSA_SHA512_P521 = 3;
|
|
const uint16_t SIGNING_KEY_TYPE_RSA_SHA256_2048 = 4;
|
|
const uint16_t SIGNING_KEY_TYPE_RSA_SHA384_3072 = 5;
|
|
const uint16_t SIGNING_KEY_TYPE_RSA_SHA512_4096 = 6;
|
|
const uint16_t SIGNING_KEY_TYPE_EDDSA_SHA512_ED25519 = 7;
|
|
typedef uint16_t SigningKeyType;
|
|
typedef uint16_t CryptoKeyType;
|
|
|
|
class IdentityEx
|
|
{
|
|
public:
|
|
|
|
IdentityEx ();
|
|
IdentityEx (const uint8_t * publicKey, const uint8_t * signingKey,
|
|
SigningKeyType type = SIGNING_KEY_TYPE_DSA_SHA1);
|
|
IdentityEx (const uint8_t * buf, size_t len);
|
|
IdentityEx (const IdentityEx& other);
|
|
~IdentityEx ();
|
|
IdentityEx& operator=(const IdentityEx& other);
|
|
IdentityEx& operator=(const Identity& standard);
|
|
|
|
size_t FromBuffer (const uint8_t * buf, size_t len);
|
|
size_t ToBuffer (uint8_t * buf, size_t len) const;
|
|
size_t FromBase64(const std::string& s);
|
|
std::string ToBase64 () const;
|
|
const Identity& GetStandardIdentity () const { return m_StandardIdentity; };
|
|
const IdentHash& GetIdentHash () const { return m_IdentHash; };
|
|
size_t GetFullLen () const { return m_ExtendedLen + DEFAULT_IDENTITY_SIZE; };
|
|
size_t GetSigningPublicKeyLen () const;
|
|
size_t GetSigningPrivateKeyLen () const;
|
|
size_t GetSignatureLen () const;
|
|
bool Verify (const uint8_t * buf, size_t len, const uint8_t * signature) const;
|
|
SigningKeyType GetSigningKeyType () const;
|
|
CryptoKeyType GetCryptoKeyType () const;
|
|
void DropVerifier (); // to save memory
|
|
|
|
private:
|
|
|
|
void CreateVerifier () const;
|
|
|
|
private:
|
|
|
|
Identity m_StandardIdentity;
|
|
IdentHash m_IdentHash;
|
|
mutable i2p::crypto::Verifier * m_Verifier;
|
|
size_t m_ExtendedLen;
|
|
uint8_t * m_ExtendedBuffer;
|
|
};
|
|
|
|
class PrivateKeys // for eepsites
|
|
{
|
|
public:
|
|
|
|
PrivateKeys (): m_Signer (nullptr) {};
|
|
PrivateKeys (const PrivateKeys& other): m_Signer (nullptr) { *this = other; };
|
|
PrivateKeys (const Keys& keys): m_Signer (nullptr) { *this = keys; };
|
|
PrivateKeys& operator=(const Keys& keys);
|
|
PrivateKeys& operator=(const PrivateKeys& other);
|
|
~PrivateKeys () { delete m_Signer; };
|
|
|
|
const IdentityEx& GetPublic () const { return m_Public; };
|
|
const uint8_t * GetPrivateKey () const { return m_PrivateKey; };
|
|
const uint8_t * GetSigningPrivateKey () const { return m_SigningPrivateKey; };
|
|
void Sign (const uint8_t * buf, int len, uint8_t * signature) const;
|
|
|
|
size_t GetFullLen () const { return m_Public.GetFullLen () + 256 + m_Public.GetSigningPrivateKeyLen (); };
|
|
size_t FromBuffer (const uint8_t * buf, size_t len);
|
|
size_t ToBuffer (uint8_t * buf, size_t len) const;
|
|
|
|
size_t FromBase64(const std::string& s);
|
|
std::string ToBase64 () const;
|
|
|
|
static PrivateKeys CreateRandomKeys (SigningKeyType type = SIGNING_KEY_TYPE_DSA_SHA1);
|
|
|
|
private:
|
|
|
|
void CreateSigner ();
|
|
|
|
private:
|
|
|
|
IdentityEx m_Public;
|
|
uint8_t m_PrivateKey[256];
|
|
uint8_t m_SigningPrivateKey[1024]; // assume private key doesn't exceed 1024 bytes
|
|
i2p::crypto::Signer * m_Signer;
|
|
};
|
|
|
|
// kademlia
|
|
struct XORMetric
|
|
{
|
|
union
|
|
{
|
|
uint8_t metric[32];
|
|
uint64_t metric_ll[4];
|
|
};
|
|
|
|
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; };
|
|
};
|
|
|
|
IdentHash CreateRoutingKey (const IdentHash& ident);
|
|
XORMetric operator^(const IdentHash& key1, const IdentHash& key2);
|
|
|
|
// destination for delivery instuctions
|
|
class RoutingDestination
|
|
{
|
|
public:
|
|
|
|
RoutingDestination () {};
|
|
virtual ~RoutingDestination () {};
|
|
|
|
virtual const IdentHash& GetIdentHash () const = 0;
|
|
virtual const uint8_t * GetEncryptionPublicKey () const = 0;
|
|
virtual bool IsDestination () const = 0; // for garlic
|
|
|
|
std::unique_ptr<const i2p::crypto::ElGamalEncryption>& GetElGamalEncryption () const
|
|
{
|
|
if (!m_ElGamalEncryption)
|
|
m_ElGamalEncryption.reset (new i2p::crypto::ElGamalEncryption (GetEncryptionPublicKey ()));
|
|
return m_ElGamalEncryption;
|
|
}
|
|
|
|
private:
|
|
|
|
mutable std::unique_ptr<const i2p::crypto::ElGamalEncryption> m_ElGamalEncryption; // use lazy initialization
|
|
};
|
|
|
|
class LocalDestination
|
|
{
|
|
public:
|
|
|
|
virtual ~LocalDestination() {};
|
|
virtual const PrivateKeys& GetPrivateKeys () const = 0;
|
|
virtual const uint8_t * GetEncryptionPrivateKey () const = 0;
|
|
virtual const uint8_t * GetEncryptionPublicKey () const = 0;
|
|
|
|
const IdentityEx& GetIdentity () const { return GetPrivateKeys ().GetPublic (); };
|
|
const IdentHash& GetIdentHash () const { return GetIdentity ().GetIdentHash (); };
|
|
void Sign (const uint8_t * buf, int len, uint8_t * signature) const
|
|
{
|
|
GetPrivateKeys ().Sign (buf, len, signature);
|
|
};
|
|
};
|
|
}
|
|
}
|
|
|
|
|
|
#endif
|