/*************************************************************************/ /* crypto_core.cpp */ /*************************************************************************/ /* This file is part of: */ /* GODOT ENGINE */ /* https://godotengine.org */ /*************************************************************************/ /* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur. */ /* Copyright (c) 2014-2021 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. */ /*************************************************************************/ #include "crypto_core.h" #include <mbedtls/aes.h> #include <mbedtls/base64.h> #include <mbedtls/md5.h> #include <mbedtls/sha1.h> #include <mbedtls/sha256.h> // MD5 CryptoCore::MD5Context::MD5Context() { ctx = memalloc(sizeof(mbedtls_md5_context)); mbedtls_md5_init((mbedtls_md5_context *)ctx); } CryptoCore::MD5Context::~MD5Context() { mbedtls_md5_free((mbedtls_md5_context *)ctx); memfree((mbedtls_md5_context *)ctx); } Error CryptoCore::MD5Context::start() { int ret = mbedtls_md5_starts_ret((mbedtls_md5_context *)ctx); return ret ? FAILED : OK; } Error CryptoCore::MD5Context::update(const uint8_t *p_src, size_t p_len) { int ret = mbedtls_md5_update_ret((mbedtls_md5_context *)ctx, p_src, p_len); return ret ? FAILED : OK; } Error CryptoCore::MD5Context::finish(unsigned char r_hash[16]) { int ret = mbedtls_md5_finish_ret((mbedtls_md5_context *)ctx, r_hash); return ret ? FAILED : OK; } // SHA1 CryptoCore::SHA1Context::SHA1Context() { ctx = memalloc(sizeof(mbedtls_sha1_context)); mbedtls_sha1_init((mbedtls_sha1_context *)ctx); } CryptoCore::SHA1Context::~SHA1Context() { mbedtls_sha1_free((mbedtls_sha1_context *)ctx); memfree((mbedtls_sha1_context *)ctx); } Error CryptoCore::SHA1Context::start() { int ret = mbedtls_sha1_starts_ret((mbedtls_sha1_context *)ctx); return ret ? FAILED : OK; } Error CryptoCore::SHA1Context::update(const uint8_t *p_src, size_t p_len) { int ret = mbedtls_sha1_update_ret((mbedtls_sha1_context *)ctx, p_src, p_len); return ret ? FAILED : OK; } Error CryptoCore::SHA1Context::finish(unsigned char r_hash[20]) { int ret = mbedtls_sha1_finish_ret((mbedtls_sha1_context *)ctx, r_hash); return ret ? FAILED : OK; } // SHA256 CryptoCore::SHA256Context::SHA256Context() { ctx = memalloc(sizeof(mbedtls_sha256_context)); mbedtls_sha256_init((mbedtls_sha256_context *)ctx); } CryptoCore::SHA256Context::~SHA256Context() { mbedtls_sha256_free((mbedtls_sha256_context *)ctx); memfree((mbedtls_sha256_context *)ctx); } Error CryptoCore::SHA256Context::start() { int ret = mbedtls_sha256_starts_ret((mbedtls_sha256_context *)ctx, 0); return ret ? FAILED : OK; } Error CryptoCore::SHA256Context::update(const uint8_t *p_src, size_t p_len) { int ret = mbedtls_sha256_update_ret((mbedtls_sha256_context *)ctx, p_src, p_len); return ret ? FAILED : OK; } Error CryptoCore::SHA256Context::finish(unsigned char r_hash[32]) { int ret = mbedtls_sha256_finish_ret((mbedtls_sha256_context *)ctx, r_hash); return ret ? FAILED : OK; } // AES256 CryptoCore::AESContext::AESContext() { ctx = memalloc(sizeof(mbedtls_aes_context)); mbedtls_aes_init((mbedtls_aes_context *)ctx); } CryptoCore::AESContext::~AESContext() { mbedtls_aes_free((mbedtls_aes_context *)ctx); memfree((mbedtls_aes_context *)ctx); } Error CryptoCore::AESContext::set_encode_key(const uint8_t *p_key, size_t p_bits) { int ret = mbedtls_aes_setkey_enc((mbedtls_aes_context *)ctx, p_key, p_bits); return ret ? FAILED : OK; } Error CryptoCore::AESContext::set_decode_key(const uint8_t *p_key, size_t p_bits) { int ret = mbedtls_aes_setkey_dec((mbedtls_aes_context *)ctx, p_key, p_bits); return ret ? FAILED : OK; } Error CryptoCore::AESContext::encrypt_ecb(const uint8_t p_src[16], uint8_t r_dst[16]) { int ret = mbedtls_aes_crypt_ecb((mbedtls_aes_context *)ctx, MBEDTLS_AES_ENCRYPT, p_src, r_dst); return ret ? FAILED : OK; } Error CryptoCore::AESContext::encrypt_cbc(size_t p_length, uint8_t r_iv[16], const uint8_t *p_src, uint8_t *r_dst) { int ret = mbedtls_aes_crypt_cbc((mbedtls_aes_context *)ctx, MBEDTLS_AES_ENCRYPT, p_length, r_iv, p_src, r_dst); return ret ? FAILED : OK; } Error CryptoCore::AESContext::encrypt_cfb(size_t p_length, uint8_t p_iv[16], const uint8_t *p_src, uint8_t *r_dst) { size_t iv_off = 0; // Ignore and assume 16-byte alignment. int ret = mbedtls_aes_crypt_cfb128((mbedtls_aes_context *)ctx, MBEDTLS_AES_ENCRYPT, p_length, &iv_off, p_iv, p_src, r_dst); return ret ? FAILED : OK; } Error CryptoCore::AESContext::decrypt_ecb(const uint8_t p_src[16], uint8_t r_dst[16]) { int ret = mbedtls_aes_crypt_ecb((mbedtls_aes_context *)ctx, MBEDTLS_AES_DECRYPT, p_src, r_dst); return ret ? FAILED : OK; } Error CryptoCore::AESContext::decrypt_cbc(size_t p_length, uint8_t r_iv[16], const uint8_t *p_src, uint8_t *r_dst) { int ret = mbedtls_aes_crypt_cbc((mbedtls_aes_context *)ctx, MBEDTLS_AES_DECRYPT, p_length, r_iv, p_src, r_dst); return ret ? FAILED : OK; } Error CryptoCore::AESContext::decrypt_cfb(size_t p_length, uint8_t p_iv[16], const uint8_t *p_src, uint8_t *r_dst) { size_t iv_off = 0; // Ignore and assume 16-byte alignment. int ret = mbedtls_aes_crypt_cfb128((mbedtls_aes_context *)ctx, MBEDTLS_AES_DECRYPT, p_length, &iv_off, p_iv, p_src, r_dst); return ret ? FAILED : OK; } // CryptoCore String CryptoCore::b64_encode_str(const uint8_t *p_src, int p_src_len) { int b64len = p_src_len / 3 * 4 + 4 + 1; Vector<uint8_t> b64buff; b64buff.resize(b64len); uint8_t *w64 = b64buff.ptrw(); size_t strlen = 0; int ret = b64_encode(&w64[0], b64len, &strlen, p_src, p_src_len); w64[strlen] = 0; return ret ? String() : (const char *)&w64[0]; } Error CryptoCore::b64_encode(uint8_t *r_dst, int p_dst_len, size_t *r_len, const uint8_t *p_src, int p_src_len) { int ret = mbedtls_base64_encode(r_dst, p_dst_len, r_len, p_src, p_src_len); return ret ? FAILED : OK; } Error CryptoCore::b64_decode(uint8_t *r_dst, int p_dst_len, size_t *r_len, const uint8_t *p_src, int p_src_len) { int ret = mbedtls_base64_decode(r_dst, p_dst_len, r_len, p_src, p_src_len); return ret ? FAILED : OK; } Error CryptoCore::md5(const uint8_t *p_src, int p_src_len, unsigned char r_hash[16]) { int ret = mbedtls_md5_ret(p_src, p_src_len, r_hash); return ret ? FAILED : OK; } Error CryptoCore::sha1(const uint8_t *p_src, int p_src_len, unsigned char r_hash[20]) { int ret = mbedtls_sha1_ret(p_src, p_src_len, r_hash); return ret ? FAILED : OK; } Error CryptoCore::sha256(const uint8_t *p_src, int p_src_len, unsigned char r_hash[32]) { int ret = mbedtls_sha256_ret(p_src, p_src_len, r_hash, 0); return ret ? FAILED : OK; }