pandemonium_engine/core/crypto/crypto_core.h

#ifndef CRYPTO_CORE_H
#define CRYPTO_CORE_H

/*************************************************************************/
/*  crypto_core.h                                                        */
/*************************************************************************/
/*                         This file is part of:                         */
/*                          PANDEMONIUM ENGINE                           */
/*             https://github.com/Relintai/pandemonium_engine            */
/*************************************************************************/
/* Copyright (c) 2022-present Péter Magyar.                              */
/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md).   */
/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur.                 */
/*                                                                       */
/* 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.                */
/*************************************************************************/

#include "core/object/reference.h"

class CryptoCore {
public:
	class MD5Context {
	private:
		void *ctx; // To include, or not to include...

	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; // To include, or not to include...

	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; // To include, or not to include...

	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; // To include, or not to include...

	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);
	};

	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