163 lines
3.8 KiB
C++
163 lines
3.8 KiB
C++
#pragma once
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/*____________________________________________________________________________________________________________
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Original Author: skadro
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Github: https://github.com/skadro-official
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License: See end of file
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skCrypter
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Compile-time, Usermode + Kernelmode, safe and lightweight string crypter library for C++11+
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*Not removing this part is appreciated*
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____________________________________________________________________________________________________________*/
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#ifdef _KERNEL_MODE
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namespace std
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{
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// STRUCT TEMPLATE remove_reference
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template <class _Ty>
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struct remove_reference {
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using type = _Ty;
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};
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template <class _Ty>
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struct remove_reference<_Ty&> {
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using type = _Ty;
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};
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template <class _Ty>
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struct remove_reference<_Ty&&> {
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using type = _Ty;
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};
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template <class _Ty>
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using remove_reference_t = typename remove_reference<_Ty>::type;
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// STRUCT TEMPLATE remove_const
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template <class _Ty>
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struct remove_const { // remove top-level const qualifier
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using type = _Ty;
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};
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template <class _Ty>
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struct remove_const<const _Ty> {
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using type = _Ty;
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};
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template <class _Ty>
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using remove_const_t = typename remove_const<_Ty>::type;
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}
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#else
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#include <type_traits>
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#endif
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namespace skc
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{
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template<class _Ty>
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using clean_type = typename std::remove_const_t<std::remove_reference_t<_Ty>>;
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template <int _size, char _key1, char _key2, typename T>
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class skCrypter
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{
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public:
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__forceinline constexpr skCrypter(T* data)
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{
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crypt(data);
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}
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__forceinline T* get()
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{
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return _storage;
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}
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__forceinline int size() // (w)char count
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{
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return _size;
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}
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__forceinline char key()
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{
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return _key1;
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}
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__forceinline T* encrypt()
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{
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if (!isEncrypted())
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crypt(_storage);
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return _storage;
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}
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__forceinline T* decrypt()
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{
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if (isEncrypted())
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crypt(_storage);
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return _storage;
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}
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__forceinline bool isEncrypted()
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{
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return _storage[_size - 1] != 0;
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}
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__forceinline void clear() // set full storage to 0
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{
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for (int i = 0; i < _size; i++)
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{
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_storage[i] = 0;
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}
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}
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__forceinline operator T* ()
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{
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decrypt();
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return _storage;
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}
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private:
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__forceinline constexpr void crypt(T* data)
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{
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for (int i = 0; i < _size; i++)
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{
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_storage[i] = data[i] ^ (_key1 + i % (1 + _key2));
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}
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}
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T _storage[_size]{};
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};
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}
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#define E(str) skCrypt_key(str, __TIME__[4], __TIME__[7])
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#define skCrypt_key(str, key1, key2) []() { \
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constexpr static auto crypted = skc::skCrypter \
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<sizeof(str) / sizeof(str[0]), key1, key2, skc::clean_type<decltype(str[0])>>((skc::clean_type<decltype(str[0])>*)str); \
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return crypted; }()
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/*________________________________________________________________________________
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MIT License
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Copyright (c) 2020 skadro
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.
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________________________________________________________________________________*/ |