D:/SoftwareEntwicklung/C++/HLC/Tools/SoftPixelEngine/repository/sources/Base/spMathMD5CheckSum.hpp
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00001 /* 00002 * MD5 check sum header 00003 * 00004 * This file is part of the "SoftPixel Engine" (Copyright (c) 2008 by Lukas Hermanns) 00005 * See "SoftPixelEngine.hpp" for license information. 00006 */ 00007 00008 #ifndef __SP_MATH_MD5_CHECKSUM_H__ 00009 #define __SP_MATH_MD5_CHECKSUM_H__ 00010 00011 00012 #include "Base/spStandard.hpp" 00013 #include "Base/spMath.hpp" 00014 00015 00016 namespace sp 00017 { 00018 namespace math 00019 { 00020 00021 00027 class UInt128 00028 { 00029 00030 public: 00031 00032 UInt128() : 00033 High_ (0), 00034 Low_ (0) 00035 { 00036 } 00037 UInt128(u64 HighWord, u64 LowWord) : 00038 High_ (HighWord ), 00039 Low_ (LowWord ) 00040 { 00041 } 00042 UInt128(u32 Word3, u32 Word2, u32 Word1, u32 Word0) : 00043 High_ (static_cast<u64>(Word3) << 8 | Word2), 00044 Low_ (static_cast<u64>(Word1) << 8 | Word0) 00045 { 00046 } 00047 UInt128(const UInt128 &Other) : 00048 High_ (Other.High_), 00049 Low_ (Other.Low_ ) 00050 { 00051 } 00052 ~UInt128() 00053 { 00054 } 00055 00056 /* === Operators === */ 00057 00058 inline bool operator == (const UInt128 &Other) const 00059 { 00060 return High_ == Other.High_ && Low_ == Other.Low_; 00061 } 00062 inline bool operator != (const UInt128 &Other) const 00063 { 00064 return High_ != Other.High_ || Low_ != Other.Low_; 00065 } 00066 00067 #define BITWISE_OP(x) \ 00068 inline UInt128& operator x (const UInt128 &Other) \ 00069 { \ 00070 High_ x Other.High_; \ 00071 Low_ x Other.Low_; \ 00072 return *this; \ 00073 } 00074 00075 BITWISE_OP(=) 00076 BITWISE_OP(&=) 00077 BITWISE_OP(|=) 00078 BITWISE_OP(^=) 00079 00080 #undef BITWISE_OP 00081 00082 /* === Inline functions === */ 00083 00084 inline UInt128& invert() 00085 { 00086 High_ = ~High_; 00087 Low_ = ~Low_; 00088 return *this; 00089 } 00090 00091 inline u64 getHighWord() const 00092 { 00093 return High_; 00094 } 00095 inline u64 getLowWord() const 00096 { 00097 return Low_; 00098 } 00099 00100 private: 00101 00102 /* === Members: === */ 00103 00104 u64 High_; 00105 u64 Low_; 00106 00107 }; 00108 00109 00122 class SP_EXPORT MD5CheckSum 00123 { 00124 00125 public: 00126 00127 MD5CheckSum(); 00128 MD5CheckSum(const void* Buffer, u32 Size); 00129 MD5CheckSum(const MD5CheckSum &Other); 00130 ~MD5CheckSum(); 00131 00132 /* === Functions === */ 00133 00135 bool valid() const; 00136 00138 io::stringc getHexString() const; 00139 00140 /* === Inline functions === */ 00141 00142 inline MD5CheckSum& operator = (const MD5CheckSum &Other) 00143 { 00144 CheckSum_ = Other.CheckSum_; 00145 return *this; 00146 } 00147 00148 inline bool operator == (const MD5CheckSum &Other) const 00149 { 00150 return CheckSum_ == Other.CheckSum_; 00151 } 00152 inline bool operator != (const MD5CheckSum &Other) const 00153 { 00154 return CheckSum_ != Other.CheckSum_; 00155 } 00156 00158 inline UInt128 get() const 00159 { 00160 return CheckSum_; 00161 } 00162 00163 private: 00164 00165 /* === Functions: === */ 00166 00167 void computeCheckSum(const void* Buffer, u32 Size); 00168 00169 UInt128 getF(const UInt128 &B, const UInt128 &C, const UInt128 &D) const; 00170 UInt128 getG(const UInt128 &B, const UInt128 &C, const UInt128 &D) const; 00171 UInt128 getH(const UInt128 &B, const UInt128 &C, const UInt128 &D) const; 00172 UInt128 getI(const UInt128 &B, const UInt128 &C, const UInt128 &D) const; 00173 00174 /* === Members: === */ 00175 00176 UInt128 CheckSum_; 00177 00178 }; 00179 00180 00181 } // /namespace math 00182 00183 } // /namespace sp 00184 00185 00186 #endif 00187 00188 00189 00190 // ================================================================================
