aes256.hpp

#ifndef MSTL_CORE_ENCRYPT_AES256_HPP__
#define MSTL_CORE_ENCRYPT_AES256_HPP__
#include "../string/string.hpp"
MSTL_BEGIN_NAMESPACE__
 
class MSTL_API AES256 {
private:
    static constexpr byte_t sbox[256] = {
        0x63, 0x7c, 0x77, 0x7b, 0xf2, 0x6b, 0x6f, 0xc5, 0x30, 0x01, 0x67, 0x2b, 0xfe, 0xd7, 0xab, 0x76,
        0xca, 0x82, 0xc9, 0x7d, 0xfa, 0x59, 0x47, 0xf0, 0xad, 0xd4, 0xa2, 0xaf, 0x9c, 0xa4, 0x72, 0xc0,
        0xb7, 0xfd, 0x93, 0x26, 0x36, 0x3f, 0xf7, 0xcc, 0x34, 0xa5, 0xe5, 0xf1, 0x71, 0xd8, 0x31, 0x15,
        0x04, 0xc7, 0x23, 0xc3, 0x18, 0x96, 0x05, 0x9a, 0x07, 0x12, 0x80, 0xe2, 0xeb, 0x27, 0xb2, 0x75,
        0x09, 0x83, 0x2c, 0x1a, 0x1b, 0x6e, 0x5a, 0xa0, 0x52, 0x3b, 0xd6, 0xb3, 0x29, 0xe3, 0x2f, 0x84,
        0x53, 0xd1, 0x00, 0xed, 0x20, 0xfc, 0xb1, 0x5b, 0x6a, 0xcb, 0xbe, 0x39, 0x4a, 0x4c, 0x58, 0xcf,
        0xd0, 0xef, 0xaa, 0xfb, 0x43, 0x4d, 0x33, 0x85, 0x45, 0xf9, 0x02, 0x7f, 0x50, 0x3c, 0x9f, 0xa8,
        0x51, 0xa3, 0x40, 0x8f, 0x92, 0x9d, 0x38, 0xf5, 0xbc, 0xb6, 0xda, 0x21, 0x10, 0xff, 0xf3, 0xd2,
        0xcd, 0x0c, 0x13, 0xec, 0x5f, 0x97, 0x44, 0x17, 0xc4, 0xa7, 0x7e, 0x3d, 0x64, 0x5d, 0x19, 0x73,
        0x60, 0x81, 0x4f, 0xdc, 0x22, 0x2a, 0x90, 0x88, 0x46, 0xee, 0xb8, 0x14, 0xde, 0x5e, 0x0b, 0xdb,
        0xe0, 0x32, 0x3a, 0x0a, 0x49, 0x06, 0x24, 0x5c, 0xc2, 0xd3, 0xac, 0x62, 0x91, 0x95, 0xe4, 0x79,
        0xe7, 0xc8, 0x37, 0x6d, 0x8d, 0xd5, 0x4e, 0xa9, 0x6c, 0x56, 0xf4, 0xea, 0x65, 0x7a, 0xae, 0x08,
        0xba, 0x78, 0x25, 0x2e, 0x1c, 0xa6, 0xb4, 0xc6, 0xe8, 0xdd, 0x74, 0x1f, 0x4b, 0xbd, 0x8b, 0x8a,
        0x70, 0x3e, 0xb5, 0x66, 0x48, 0x03, 0xf6, 0x0e, 0x61, 0x35, 0x57, 0xb9, 0x86, 0xc1, 0x1d, 0x9e,
        0xe1, 0xf8, 0x98, 0x11, 0x69, 0xd9, 0x8e, 0x94, 0x9b, 0x1e, 0x87, 0xe9, 0xce, 0x55, 0x28, 0xdf,
        0x8c, 0xa1, 0x89, 0x0d, 0xbf, 0xe6, 0x42, 0x68, 0x41, 0x99, 0x2d, 0x0f, 0xb0, 0x54, 0xbb, 0x16
    };
 
    static constexpr byte_t inv_sbox[256] = {
        0x52, 0x09, 0x6a, 0xd5, 0x30, 0x36, 0xa5, 0x38, 0xbf, 0x40, 0xa3, 0x9e, 0x81, 0xf3, 0xd7, 0xfb,
        0x7c, 0xe3, 0x39, 0x82, 0x9b, 0x2f, 0xff, 0x87, 0x34, 0x8e, 0x43, 0x44, 0xc4, 0xde, 0xe9, 0xcb,
        0x54, 0x7b, 0x94, 0x32, 0xa6, 0xc2, 0x23, 0x3d, 0xee, 0x4c, 0x95, 0x0b, 0x42, 0xfa, 0xc3, 0x4e,
        0x08, 0x2e, 0xa1, 0x66, 0x28, 0xd9, 0x24, 0xb2, 0x76, 0x5b, 0xa2, 0x49, 0x6d, 0x8b, 0xd1, 0x25,
        0x72, 0xf8, 0xf6, 0x64, 0x86, 0x68, 0x98, 0x16, 0xd4, 0xa4, 0x5c, 0xcc, 0x5d, 0x65, 0xb6, 0x92,
        0x6c, 0x70, 0x48, 0x50, 0xfd, 0xed, 0xb9, 0xda, 0x5e, 0x15, 0x46, 0x57, 0xa7, 0x8d, 0x9d, 0x84,
        0x90, 0xd8, 0xab, 0x00, 0x8c, 0xbc, 0xd3, 0x0a, 0xf7, 0xe4, 0x58, 0x05, 0xb8, 0xb3, 0x45, 0x06,
        0xd0, 0x2c, 0x1e, 0x8f, 0xca, 0x3f, 0x0f, 0x02, 0xc1, 0xaf, 0xbd, 0x03, 0x01, 0x13, 0x8a, 0x6b,
        0x3a, 0x91, 0x11, 0x41, 0x4f, 0x67, 0xdc, 0xea, 0x97, 0xf2, 0xcf, 0xce, 0xf0, 0xb4, 0xe6, 0x73,
        0x96, 0xac, 0x74, 0x22, 0xe7, 0xad, 0x35, 0x85, 0xe2, 0xf9, 0x37, 0xe8, 0x1c, 0x75, 0xdf, 0x6e,
        0x47, 0xf1, 0x1a, 0x71, 0x1d, 0x29, 0xc5, 0x89, 0x6f, 0xb7, 0x62, 0x0e, 0xaa, 0x18, 0xbe, 0x1b,
        0xfc, 0x56, 0x3e, 0x4b, 0xc6, 0xd2, 0x79, 0x20, 0x9a, 0xdb, 0xc0, 0xfe, 0x78, 0xcd, 0x5a, 0xf4,
        0x1f, 0xdd, 0xa8, 0x33, 0x88, 0x07, 0xc7, 0x31, 0xb1, 0x12, 0x10, 0x59, 0x27, 0x80, 0xec, 0x5f,
        0x60, 0x51, 0x7f, 0xa9, 0x19, 0xb5, 0x4a, 0x0d, 0x2d, 0xe5, 0x7a, 0x9f, 0x93, 0xc9, 0x9c, 0xef,
        0xa0, 0xe0, 0x3b, 0x4d, 0xae, 0x2a, 0xf5, 0xb0, 0xc8, 0xeb, 0xbb, 0x3c, 0x83, 0x53, 0x99, 0x61,
        0x17, 0x2b, 0x04, 0x7e, 0xba, 0x77, 0xd6, 0x26, 0xe1, 0x69, 0x14, 0x63, 0x55, 0x21, 0x0c, 0x7d
    };
 
    static constexpr byte_t rcon[15] = {
        0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36, 0x6c, 0xd8, 0xab, 0x4d, 0x9a
    };
 
    static byte_t gf_mult(byte_t a, byte_t b);
 
    static void key_expansion(const byte_t* key, byte_t* expanded_key);
 
    static void sub_bytes(byte_t state[16]) {
        for (int i = 0; i < 16; ++i) {
            state[i] = sbox[state[i]];
        }
    }
    static void inv_sub_bytes(byte_t state[16])  {
        for (int i = 0; i < 16; ++i) {
            state[i] = inv_sbox[state[i]];
        }
    }
 
    static void shift_rows(byte_t state[16]);
    static void inv_shift_rows(byte_t state[16]);
 
    static void mix_columns(byte_t state[16]);
    static void inv_mix_columns(byte_t state[16]);
 
    static void add_round_key(byte_t state[16], const byte_t* round_key) {
        for (int i = 0; i < 16; ++i) {
            state[i] ^= round_key[i];
        }
    }
 
    static void encrypt_block(byte_t block[16], const byte_t* expanded_key);
    static void decrypt_block(byte_t block[16], const byte_t* expanded_key);
 
public:
    static bstring encrypt(bstring_view data, bstring_view key);
    static bstring decrypt(bstring_view data, bstring_view key);
 
    static bstring encrypt_pkcs7(bstring_view data, bstring_view key);
    static bstring decrypt_pkcs7(bstring_view data, bstring_view key);
 
    static string encrypt_hex(string_view data, string_view key_hex);
    static string decrypt_hex(string_view encrypted_hex, string_view key_hex);
};
 
 
MSTL_ALWAYS_INLINE_INLINE string aes256_encrypt(const string& data, const string& key_hex) {
    return AES256::encrypt_hex(data.view(), key_hex.view());
}
MSTL_ALWAYS_INLINE_INLINE string aes256_decrypt(const string& encrypted_hex, const string& key_hex) {
    return AES256::decrypt_hex(encrypted_hex.view(), key_hex.view());
}
 
MSTL_ALWAYS_INLINE_INLINE string aes256_encrypt(const string& data, const string_view key_hex) {
    return AES256::encrypt_hex(data.view(), key_hex);
}
MSTL_ALWAYS_INLINE_INLINE string aes256_decrypt(const string& encrypted_hex, const string_view key_hex) {
    return AES256::decrypt_hex(encrypted_hex.view(), key_hex);
}
 
MSTL_ALWAYS_INLINE_INLINE string aes256_encrypt(const string& data, const char* key_hex) {
    return AES256::encrypt_hex(data.view(), key_hex);
}
MSTL_ALWAYS_INLINE_INLINE string aes256_decrypt(const string& encrypted_hex, const char* key_hex) {
    return AES256::decrypt_hex(encrypted_hex.view(), key_hex);
}
 
MSTL_ALWAYS_INLINE_INLINE string aes256_encrypt(const string_view data, const string& key_hex) {
    return AES256::encrypt_hex(data, key_hex.view());
}
MSTL_ALWAYS_INLINE_INLINE string aes256_decrypt(const string_view encrypted_hex, const string& key_hex) {
    return AES256::decrypt_hex(encrypted_hex, key_hex.view());
}
 
MSTL_ALWAYS_INLINE_INLINE string aes256_encrypt(const char* data, const string& key_hex) {
    return AES256::encrypt_hex(data, key_hex.view());
}
MSTL_ALWAYS_INLINE_INLINE string aes256_decrypt(const char* encrypted_hex, const string& key_hex) {
    return AES256::decrypt_hex(encrypted_hex, key_hex.view());
}
 
MSTL_ALWAYS_INLINE_INLINE string aes256_encrypt(const string_view data, const string_view key_hex) {
    return AES256::encrypt_hex(data, key_hex);
}
MSTL_ALWAYS_INLINE_INLINE string aes256_decrypt(const string_view encrypted_hex, const string_view key_hex) {
    return AES256::decrypt_hex(encrypted_hex, key_hex);
}
 
MSTL_ALWAYS_INLINE_INLINE string aes256_encrypt(const char* data, const string_view key_hex) {
    return AES256::encrypt_hex(data, key_hex);
}
MSTL_ALWAYS_INLINE_INLINE string aes256_decrypt(const char* encrypted_hex, const string_view key_hex) {
    return AES256::decrypt_hex(encrypted_hex, key_hex);
}
 
MSTL_ALWAYS_INLINE_INLINE string aes256_encrypt(const string_view data, const char* key_hex) {
    return AES256::encrypt_hex(data, key_hex);
}
MSTL_ALWAYS_INLINE_INLINE string aes256_decrypt(const string_view encrypted_hex, const char* key_hex) {
    return AES256::decrypt_hex(encrypted_hex, key_hex);
}
 
MSTL_ALWAYS_INLINE_INLINE string aes256_encrypt(const char* data, const char* key_hex) {
    return AES256::encrypt_hex(data, key_hex);
}
MSTL_ALWAYS_INLINE_INLINE string aes256_decrypt(const char* encrypted_hex, const char* key_hex) {
    return AES256::decrypt_hex(encrypted_hex, key_hex);
}
 
MSTL_END_NAMESPACE__
#endif // MSTL_CORE_ENCRYPT_AES256_HPP__