SHA1算法源代码.doc

SHA1算法源代码 2009-10-16 17:51 sha1.h==================================================================================== #ifndef _SHA1_H_#define _SHA1_H_ /**//* sha1.h */ #ifndef _SHA_enum_#define _SHA_enum_enum...{??? shaSuccess = 0,??? shaNull,??????????? /**//* Null pointer parameter */??? shaInputTooLong,??? /**//* input data too long */??? shaStateError?????? /**//* called Input after Result */};#endif #define SHA1HashSize 20 typedef struct SHA1Context...{??? DWORD Intermediate_Hash[SHA1HashSize/4]; // Message Digest ??? DWORD Length_Low;??????????? // Message length in bits??? DWORD Length_High;??????????? // Message length in bits ??? int Message_Block_Index;??? // Index into message block array??? unsigned char Message_Block[64];??? // 512-bit message blocks ??? int Computed;??????????????? // Is the digest computed???? int Corrupted;??????????????? // Is the message digest corrupted?} SHA1Context; // Function Prototypes CString GetSHA1String(CString sSource); int SHA1Reset(SHA1Context *);int SHA1Input(SHA1Context *, const unsigned char *, unsigned int);int SHA1Result(SHA1Context *, unsigned char Message_Digest[SHA1HashSize]);CString Sha1toBase32(const unsigned char *); #endif ================================================================================== #include sha1.h // Define the SHA1 circular left shift macro #define SHA1CircularShift(bits, word) (((word) (bits)) | ((word) (32-(bits)))) // Local Function Prototyptes */ void SHA1PadMessage(SHA1Context *);void SHA1ProcessMessageBlock(SHA1Context *); int SHA1Reset(SHA1Context *c)...{??? if (!c)??????? return shaNull; ??? c-Length_Low???????????? = 0;??? c-Length_High??????????? = 0;??? c-Message_Block_Index??? = 0; ??? c-Intermediate_Hash[0]?? = 0??? c-Intermediate_Hash[1]?? = 0xEFCDAB89;??? c-Intermediate_Hash[2]?? = 0x98BADCFE;??? c-Intermediate_Hash[3]?? = 0??? c-Intermediate_Hash[4]?? = 0xC3D2E1F0; ??? c-Computed?? = 0;??? c-Corrupted = 0; ??? ret