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/*************************************************************************/
/* crypto_core.h */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md). */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#ifndef CRYPTO_CORE_H
#define CRYPTO_CORE_H
#include "core/object/ref_counted.h"
class CryptoCore {
public:
class RandomGenerator {
private:
void *entropy = nullptr;
void *ctx = nullptr;
static int _entropy_poll(void *p_data, unsigned char *r_buffer, size_t p_len, size_t *r_len);
public:
RandomGenerator();
~RandomGenerator();
Error init();
Error get_random_bytes(uint8_t *r_buffer, size_t p_bytes);
};
class MD5Context {
private:
void *ctx = nullptr;
public:
MD5Context();
~MD5Context();
Error start();
Error update(const uint8_t *p_src, size_t p_len);
Error finish(unsigned char r_hash[16]);
};
class SHA1Context {
private:
void *ctx = nullptr;
public:
SHA1Context();
~SHA1Context();
Error start();
Error update(const uint8_t *p_src, size_t p_len);
Error finish(unsigned char r_hash[20]);
};
class SHA256Context {
private:
void *ctx = nullptr;
public:
SHA256Context();
~SHA256Context();
Error start();
Error update(const uint8_t *p_src, size_t p_len);
Error finish(unsigned char r_hash[32]);
};
class AESContext {
private:
void *ctx = nullptr;
public:
AESContext();
~AESContext();
Error set_encode_key(const uint8_t *p_key, size_t p_bits);
Error set_decode_key(const uint8_t *p_key, size_t p_bits);
Error encrypt_ecb(const uint8_t p_src[16], uint8_t r_dst[16]);
Error decrypt_ecb(const uint8_t p_src[16], uint8_t r_dst[16]);
Error encrypt_cbc(size_t p_length, uint8_t r_iv[16], const uint8_t *p_src, uint8_t *r_dst);
Error decrypt_cbc(size_t p_length, uint8_t r_iv[16], const uint8_t *p_src, uint8_t *r_dst);
Error encrypt_cfb(size_t p_length, uint8_t p_iv[16], const uint8_t *p_src, uint8_t *r_dst);
Error decrypt_cfb(size_t p_length, uint8_t p_iv[16], const uint8_t *p_src, uint8_t *r_dst);
};
static String b64_encode_str(const uint8_t *p_src, int p_src_len);
static Error b64_encode(uint8_t *r_dst, int p_dst_len, size_t *r_len, const uint8_t *p_src, int p_src_len);
static Error b64_decode(uint8_t *r_dst, int p_dst_len, size_t *r_len, const uint8_t *p_src, int p_src_len);
static Error md5(const uint8_t *p_src, int p_src_len, unsigned char r_hash[16]);
static Error sha1(const uint8_t *p_src, int p_src_len, unsigned char r_hash[20]);
static Error sha256(const uint8_t *p_src, int p_src_len, unsigned char r_hash[32]);
};
#endif // CRYPTO_CORE_H
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