diff options
Diffstat (limited to 'core/math')
| -rw-r--r-- | core/math/SCsub | 35 | ||||
| -rw-r--r-- | core/math/crypto_core.cpp | 146 | ||||
| -rw-r--r-- | core/math/crypto_core.h | 89 |
3 files changed, 269 insertions, 1 deletions
diff --git a/core/math/SCsub b/core/math/SCsub index 1c5f954470..4e76efceff 100644 --- a/core/math/SCsub +++ b/core/math/SCsub @@ -2,4 +2,37 @@ Import('env') -env.add_source_files(env.core_sources, "*.cpp") +env_math = env.Clone() # Maybe make one specific for crypto? + +is_builtin = env["builtin_mbedtls"] +has_module = env["module_mbedtls_enabled"] + +if is_builtin or not has_module: + # Use our headers for builtin or if the module is not going to be compiled. + # We decided not to depend on system mbedtls just for these few files that can + # be easily extracted. + env_math.Prepend(CPPPATH=["#thirdparty/mbedtls/include"]) + +# MbedTLS core functions (for CryptoCore). +# If the mbedtls module is compiled we don't need to add the .c files with our +# custom config since they will be built by the module itself. +# Only if the module is not enabled, we must compile here the required sources +# to make a "light" build with only the necessary mbedtls files. +if not has_module: + env_thirdparty = env_math.Clone() + env_thirdparty.disable_warnings() + # Custom config file + env_thirdparty.Append(CPPFLAGS=['-DMBEDTLS_CONFIG_FILE="\\"thirdparty/mbedtls/include/godot_core_mbedtls_config.h\\""']) + thirdparty_mbedtls_dir = "#thirdparty/mbedtls/library/" + thirdparty_mbedtls_sources = [ + "aes.c", + "base64.c", + "md5.c", + "sha1.c", + "sha256.c", + "godot_core_mbedtls_platform.c" + ] + thirdparty_mbedtls_sources = [thirdparty_mbedtls_dir + file for file in thirdparty_mbedtls_sources] + env_thirdparty.add_source_files(env.core_sources, thirdparty_mbedtls_sources) + +env_math.add_source_files(env.core_sources, "*.cpp") diff --git a/core/math/crypto_core.cpp b/core/math/crypto_core.cpp new file mode 100644 index 0000000000..6449d94db8 --- /dev/null +++ b/core/math/crypto_core.cpp @@ -0,0 +1,146 @@ +/*************************************************************************/ +/* crypto_core.cpp */ +/*************************************************************************/ +/* This file is part of: */ +/* GODOT ENGINE */ +/* https://godotengine.org */ +/*************************************************************************/ +/* Copyright (c) 2007-2019 Juan Linietsky, Ariel Manzur. */ +/* Copyright (c) 2014-2019 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(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; +} + +// 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(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[16]) { + 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::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; +} + +// CryptoCore +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; +} diff --git a/core/math/crypto_core.h b/core/math/crypto_core.h new file mode 100644 index 0000000000..1cb3c86e18 --- /dev/null +++ b/core/math/crypto_core.h @@ -0,0 +1,89 @@ +/*************************************************************************/ +/* crypto_core.h */ +/*************************************************************************/ +/* This file is part of: */ +/* GODOT ENGINE */ +/* https://godotengine.org */ +/*************************************************************************/ +/* Copyright (c) 2007-2019 Juan Linietsky, Ariel Manzur. */ +/* Copyright (c) 2014-2019 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/reference.h" + +class CryptoCore { + +public: + class MD5Context { + + private: + void *ctx; // To include, or not to include... + + public: + MD5Context(); + ~MD5Context(); + + Error start(); + Error update(uint8_t *p_src, size_t p_len); + Error finish(unsigned char r_hash[16]); + }; + + class SHA256Context { + + private: + void *ctx; // To include, or not to include... + + public: + SHA256Context(); + ~SHA256Context(); + + Error start(); + Error update(uint8_t *p_src, size_t p_len); + Error finish(unsigned char r_hash[16]); + }; + + 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]); + }; + + 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 |