8/2/2024

Loadup/skCrypt.h

@@ -0,0 +1,163 @@
+#pragma once
+
+/*____________________________________________________________________________________________________________
+
+Original Author: skadro
+Github: https://github.com/skadro-official
+License: See end of file
+
+skCrypter
+		Compile-time, Usermode + Kernelmode, safe and lightweight string crypter library for C++11+
+
+							*Not removing this part is appreciated*
+____________________________________________________________________________________________________________*/
+
+#ifdef _KERNEL_MODE
+namespace std
+{
+	// STRUCT TEMPLATE remove_reference
+	template <class _Ty>
+	struct remove_reference {
+		using type = _Ty;
+	};
+
+	template <class _Ty>
+	struct remove_reference<_Ty&> {
+		using type = _Ty;
+	};
+
+	template <class _Ty>
+	struct remove_reference<_Ty&&> {
+		using type = _Ty;
+	};
+
+	template <class _Ty>
+	using remove_reference_t = typename remove_reference<_Ty>::type;
+
+	// STRUCT TEMPLATE remove_const
+	template <class _Ty>
+	struct remove_const { // remove top-level const qualifier
+		using type = _Ty;
+	};
+
+	template <class _Ty>
+	struct remove_const<const _Ty> {
+		using type = _Ty;
+	};
+
+	template <class _Ty>
+	using remove_const_t = typename remove_const<_Ty>::type;
+}
+#else
+#include <type_traits>
+#endif
+
+namespace skc
+{
+	template<class _Ty>
+	using clean_type = typename std::remove_const_t<std::remove_reference_t<_Ty>>;
+
+	template <int _size, char _key1, char _key2, typename T>
+	class skCrypter
+	{
+	public:
+		__forceinline constexpr skCrypter(T* data)
+		{
+			crypt(data);
+		}
+
+		__forceinline T* get()
+		{
+			return _storage;
+		}
+
+		__forceinline int size() // (w)char count
+		{
+			return _size;
+		}
+
+		__forceinline  char key()
+		{
+			return _key1;
+		}
+
+		__forceinline  T* encrypt()
+		{
+			if (!isEncrypted())
+				crypt(_storage);
+
+			return _storage;
+		}
+
+		__forceinline  T* decrypt()
+		{
+			if (isEncrypted())
+				crypt(_storage);
+
+			return _storage;
+		}
+
+		__forceinline bool isEncrypted()
+		{
+			return _storage[_size - 1] != 0;
+		}
+
+		__forceinline void clear() // set full storage to 0
+		{
+			for (int i = 0; i < _size; i++)
+			{
+				_storage[i] = 0;
+			}
+		}
+
+		__forceinline operator T* ()
+		{
+			decrypt();
+
+			return _storage;
+		}
+
+	private:
+		__forceinline constexpr void crypt(T* data)
+		{
+			for (int i = 0; i < _size; i++)
+			{
+				_storage[i] = data[i] ^ (_key1 + i % (1 + _key2));
+			}
+		}
+
+		T _storage[_size]{};
+	};
+}
+
+#define E(str) skCrypt_key(str, __TIME__[4], __TIME__[7])
+#define skCrypt_key(str, key1, key2) []() { \
+			constexpr static auto crypted = skc::skCrypter \
+				<sizeof(str) / sizeof(str[0]), key1, key2, skc::clean_type<decltype(str[0])>>((skc::clean_type<decltype(str[0])>*)str); \
+					return crypted; }()
+
+/*________________________________________________________________________________
+
+MIT License
+
+Copyright (c) 2020 skadro
+
+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.
+
+________________________________________________________________________________*/