mirror of
https://github.com/PurpleI2P/i2pd.git
synced 2025-04-16 06:02:18 +02:00
97 lines
2.6 KiB
C++
97 lines
2.6 KiB
C++
/*
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* Copyright (c) 2025, 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 POST_QUANTUM_H__
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#define POST_QUANTUM_H__
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#include <string_view>
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#include <array>
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#include <tuple>
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#include "Crypto.h"
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#include "Identity.h"
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#if OPENSSL_PQ
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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 MLKEMKeys
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{
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public:
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MLKEMKeys (std::string_view name, size_t keyLen, size_t ctLen);
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~MLKEMKeys ();
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void GenerateKeys ();
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void GetPublicKey (uint8_t * pub) const;
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void SetPublicKey (const uint8_t * pub);
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void Encaps (uint8_t * ciphertext, uint8_t * shared);
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void Decaps (const uint8_t * ciphertext, uint8_t * shared);
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private:
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const std::string m_Name;
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const size_t m_KeyLen, m_CTLen;
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EVP_PKEY * m_Pkey;
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};
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constexpr size_t MLKEM512_KEY_LENGTH = 800;
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constexpr size_t MLKEM512_CIPHER_TEXT_LENGTH = 768;
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constexpr size_t MLKEM768_KEY_LENGTH = 1184;
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constexpr size_t MLKEM768_CIPHER_TEXT_LENGTH = 1088;
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constexpr size_t MLKEM1024_KEY_LENGTH = 1568;
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constexpr size_t MLKEM1024_CIPHER_TEXT_LENGTH = 1568;
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constexpr std::array<std::tuple<std::string_view, size_t, size_t>, 3> MLKEMS =
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{
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std::make_tuple ("ML-KEM-512", MLKEM512_KEY_LENGTH, MLKEM512_CIPHER_TEXT_LENGTH),
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std::make_tuple ("ML-KEM-768", MLKEM768_KEY_LENGTH, MLKEM768_CIPHER_TEXT_LENGTH),
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std::make_tuple ("ML-KEM-1024", MLKEM1024_KEY_LENGTH, MLKEM1024_CIPHER_TEXT_LENGTH)
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};
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class MLKEM512Keys: public MLKEMKeys
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{
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public:
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MLKEM512Keys (): MLKEMKeys (std::get<0>(MLKEMS[0]), std::get<1>(MLKEMS[0]), std::get<2>(MLKEMS[0])) {}
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};
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class MLKEM768Keys: public MLKEMKeys
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{
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public:
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MLKEM768Keys (): MLKEMKeys (std::get<0>(MLKEMS[1]), std::get<1>(MLKEMS[1]), std::get<2>(MLKEMS[1])) {}
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};
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class MLKEM1024Keys: public MLKEMKeys
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{
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public:
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MLKEM1024Keys (): MLKEMKeys (std::get<0>(MLKEMS[2]), std::get<1>(MLKEMS[2]), std::get<2>(MLKEMS[2])) {}
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};
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constexpr size_t GetMLKEMPublicKeyLen (i2p::data::CryptoKeyType type)
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{
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if (type <= i2p::data::CRYPTO_KEY_TYPE_ECIES_X25519_AEAD ||
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type - i2p::data::CRYPTO_KEY_TYPE_ECIES_X25519_AEAD > (int)MLKEMS.size ()) return 0;
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return std::get<1>(MLKEMS[type - i2p::data::CRYPTO_KEY_TYPE_ECIES_X25519_AEAD - 1]);
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}
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constexpr size_t GetMLKEMCipherTextLen (i2p::data::CryptoKeyType type)
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{
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if (type <= i2p::data::CRYPTO_KEY_TYPE_ECIES_X25519_AEAD ||
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type - i2p::data::CRYPTO_KEY_TYPE_ECIES_X25519_AEAD > (int)MLKEMS.size ()) return 0;
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return std::get<2>(MLKEMS[type - i2p::data::CRYPTO_KEY_TYPE_ECIES_X25519_AEAD - 1]);
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}
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}
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}
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#endif
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#endif
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