I2P: End-to-End encrypted and anonymous Internet https://i2pd.website/
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#ifndef CRYPTO_KEY_H__
#define CRYPTO_KEY_H__
#include <inttypes.h>
#include "Crypto.h"
namespace i2p
{
namespace crypto
{
class CryptoKeyEncryptor
{
public:
virtual ~CryptoKeyEncryptor () {};
virtual void Encrypt (const uint8_t * data, uint8_t * encrypted, BN_CTX * ctx, bool zeroPadding) = 0; // 222 bytes data, 512/514 bytes encrypted
};
class CryptoKeyDecryptor
{
public:
virtual ~CryptoKeyDecryptor () {};
virtual bool Decrypt (const uint8_t * encrypted, uint8_t * data, BN_CTX * ctx, bool zeroPadding) = 0; // 512/514 bytes encrypted, 222 bytes data
virtual size_t GetPublicKeyLen () const = 0; // we need it to set key in LS2
};
// ElGamal
class ElGamalEncryptor: public CryptoKeyEncryptor // for destination
{
public:
ElGamalEncryptor (const uint8_t * pub);
void Encrypt (const uint8_t * data, uint8_t * encrypted, BN_CTX * ctx, bool zeroPadding);
private:
uint8_t m_PublicKey[256];
};
class ElGamalDecryptor: public CryptoKeyDecryptor // for destination
{
public:
ElGamalDecryptor (const uint8_t * priv);
bool Decrypt (const uint8_t * encrypted, uint8_t * data, BN_CTX * ctx, bool zeroPadding);
size_t GetPublicKeyLen () const { return 256; };
private:
uint8_t m_PrivateKey[256];
};
// ECIES P256
class ECIESP256Encryptor: public CryptoKeyEncryptor
{
public:
ECIESP256Encryptor (const uint8_t * pub);
~ECIESP256Encryptor ();
void Encrypt (const uint8_t * data, uint8_t * encrypted, BN_CTX * ctx, bool zeroPadding);
private:
EC_GROUP * m_Curve;
EC_POINT * m_PublicKey;
};
class ECIESP256Decryptor: public CryptoKeyDecryptor
{
public:
ECIESP256Decryptor (const uint8_t * priv);
~ECIESP256Decryptor ();
bool Decrypt (const uint8_t * encrypted, uint8_t * data, BN_CTX * ctx, bool zeroPadding);
size_t GetPublicKeyLen () const { return 64; };
private:
EC_GROUP * m_Curve;
BIGNUM * m_PrivateKey;
};
void CreateECIESP256RandomKeys (uint8_t * priv, uint8_t * pub);
// ECIES GOST R 34.10
class ECIESGOSTR3410Encryptor: public CryptoKeyEncryptor
{
public:
ECIESGOSTR3410Encryptor (const uint8_t * pub);
~ECIESGOSTR3410Encryptor ();
void Encrypt (const uint8_t * data, uint8_t * encrypted, BN_CTX * ctx, bool zeroPadding);
private:
EC_POINT * m_PublicKey;
};
class ECIESGOSTR3410Decryptor: public CryptoKeyDecryptor
{
public:
ECIESGOSTR3410Decryptor (const uint8_t * priv);
~ECIESGOSTR3410Decryptor ();
bool Decrypt (const uint8_t * encrypted, uint8_t * data, BN_CTX * ctx, bool zeroPadding);
size_t GetPublicKeyLen () const { return 64; };
private:
BIGNUM * m_PrivateKey;
};
void CreateECIESGOSTR3410RandomKeys (uint8_t * priv, uint8_t * pub);
}
}
#endif