mirror of https://github.com/PurpleI2P/i2pd.git
I2P: End-to-End encrypted and anonymous Internet
https://i2pd.website/
164 lines
3.6 KiB
164 lines
3.6 KiB
/* |
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* Copyright (c) 2013-2021, The PurpleI2P Project |
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* |
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* This file is part of Purple i2pd project and licensed under BSD3 |
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* |
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* See full license text in LICENSE file at top of project tree |
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*/ |
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#ifndef CRYPTO_KEY_H__ |
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#define CRYPTO_KEY_H__ |
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#include <inttypes.h> |
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#include "Crypto.h" |
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namespace i2p |
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{ |
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namespace crypto |
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{ |
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class CryptoKeyEncryptor |
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{ |
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public: |
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virtual ~CryptoKeyEncryptor () {}; |
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virtual void Encrypt (const uint8_t * data, uint8_t * encrypted) = 0; |
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}; |
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class CryptoKeyDecryptor |
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{ |
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public: |
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virtual ~CryptoKeyDecryptor () {}; |
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virtual bool Decrypt (const uint8_t * encrypted, uint8_t * data) = 0; |
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virtual size_t GetPublicKeyLen () const = 0; // we need it to set key in LS2 |
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}; |
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// ElGamal |
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class ElGamalEncryptor: public CryptoKeyEncryptor // for destination |
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{ |
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public: |
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ElGamalEncryptor (const uint8_t * pub); |
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void Encrypt (const uint8_t * data, uint8_t * encrypted) override; // 222 bytes data, 514 bytes encrypted |
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private: |
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uint8_t m_PublicKey[256]; |
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}; |
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class ElGamalDecryptor: public CryptoKeyDecryptor // for destination |
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{ |
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public: |
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ElGamalDecryptor (const uint8_t * priv); |
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bool Decrypt (const uint8_t * encrypted, uint8_t * data) override; // 514 bytes encrypted, 222 bytes data |
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size_t GetPublicKeyLen () const override { return 256; }; |
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private: |
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uint8_t m_PrivateKey[256]; |
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}; |
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// ECIES P256 |
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class ECIESP256Encryptor: public CryptoKeyEncryptor |
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{ |
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public: |
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ECIESP256Encryptor (const uint8_t * pub); |
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~ECIESP256Encryptor (); |
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void Encrypt (const uint8_t * data, uint8_t * encrypted) override; |
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private: |
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EC_GROUP * m_Curve; |
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EC_POINT * m_PublicKey; |
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}; |
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class ECIESP256Decryptor: public CryptoKeyDecryptor |
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{ |
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public: |
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ECIESP256Decryptor (const uint8_t * priv); |
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~ECIESP256Decryptor (); |
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bool Decrypt (const uint8_t * encrypted, uint8_t * data) override; |
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size_t GetPublicKeyLen () const override { return 64; }; |
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private: |
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EC_GROUP * m_Curve; |
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BIGNUM * m_PrivateKey; |
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}; |
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void CreateECIESP256RandomKeys (uint8_t * priv, uint8_t * pub); |
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// ECIES GOST R 34.10 |
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class ECIESGOSTR3410Encryptor: public CryptoKeyEncryptor |
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{ |
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public: |
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ECIESGOSTR3410Encryptor (const uint8_t * pub); |
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~ECIESGOSTR3410Encryptor (); |
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void Encrypt (const uint8_t * data, uint8_t * encrypted) override; |
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private: |
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EC_POINT * m_PublicKey; |
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}; |
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class ECIESGOSTR3410Decryptor: public CryptoKeyDecryptor |
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{ |
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public: |
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ECIESGOSTR3410Decryptor (const uint8_t * priv); |
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~ECIESGOSTR3410Decryptor (); |
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bool Decrypt (const uint8_t * encrypted, uint8_t * data) override; |
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size_t GetPublicKeyLen () const override { return 64; }; |
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private: |
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BIGNUM * m_PrivateKey; |
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}; |
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void CreateECIESGOSTR3410RandomKeys (uint8_t * priv, uint8_t * pub); |
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// ECIES-X25519-AEAD-Ratchet |
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class ECIESX25519AEADRatchetEncryptor: public CryptoKeyEncryptor |
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{ |
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public: |
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ECIESX25519AEADRatchetEncryptor (const uint8_t * pub); |
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~ECIESX25519AEADRatchetEncryptor () {}; |
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void Encrypt (const uint8_t *, uint8_t * pub) override; |
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// copies m_PublicKey to pub |
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private: |
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uint8_t m_PublicKey[32]; |
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}; |
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class ECIESX25519AEADRatchetDecryptor: public CryptoKeyDecryptor |
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{ |
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public: |
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ECIESX25519AEADRatchetDecryptor (const uint8_t * priv, bool calculatePublic = false); |
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~ECIESX25519AEADRatchetDecryptor () {}; |
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bool Decrypt (const uint8_t * epub, uint8_t * sharedSecret) override; |
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// agree with static and return in sharedSecret (32 bytes) |
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size_t GetPublicKeyLen () const override { return 32; }; |
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const uint8_t * GetPubicKey () const { return m_StaticKeys.GetPublicKey (); }; |
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private: |
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X25519Keys m_StaticKeys; |
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}; |
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void CreateECIESX25519AEADRatchetRandomKeys (uint8_t * priv, uint8_t * pub); |
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} |
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} |
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#endif
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