?? sha1.h
字號:
/* 100% free public domain implementation of the SHA-1 algorithm by Dominik Reichl <dominik.reichl@t-online.de> Version 1.5 - 2005-01-01 - 64-bit compiler compatibility added - Made variable wiping optional (define SHA1_WIPE_VARIABLES) - Removed unnecessary variable initializations - ROL32 improvement for the Microsoft compiler (using _rotl) ======== Test Vectors (from FIPS PUB 180-1) ======== SHA1("abc") = A9993E36 4706816A BA3E2571 7850C26C 9CD0D89D SHA1("abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq") = 84983E44 1C3BD26E BAAE4AA1 F95129E5 E54670F1 SHA1(A million repetitions of "a") = 34AA973C D4C4DAA4 F61EEB2B DBAD2731 6534016F*/#ifndef ___SHA1_HDR___#define ___SHA1_HDR___#include <stdio.h> // Needed for file access#include <memory.h> // Needed for memset and memcpy#include <string.h> // Needed for strcat and strcpy// If you're compiling big endian, just comment out the following line// #define or #undef this, if you want the CSHA1 class to wipe all// temporary variables after processing#define SHA1_WIPE_VARIABLES/////////////////////////////////////////////////////////////////////////////// Define 8- and 32-bit variables#ifndef quint_32 #define quint_8 unsigned char #if (ULONG_MAX == 0xFFFFFFFF) #define quint_32 unsigned long #else #define quint_32 unsigned int #endif#endif/////////////////////////////////////////////////////////////////////////////// Declare SHA1 workspacetypedef union{ quint_8 c[64]; quint_32 l[16];} SHA1_WORKSPACE_BLOCK;class CSHA1{public: // Two different formats for ReportHash(...) enum { REPORT_HEX = 0, REPORT_DIGIT = 1 }; // Constructor and Destructor CSHA1(); ~CSHA1(); quint_32 m_state[5]; quint_32 m_count[2]; quint_8 m_buffer[64]; quint_8 m_digest[20]; void Reset(); // Update the hash value void Update(unsigned char* data, int len); bool HashFile(char *szFileName); // Finalize hash and report void Final(); void ReportHash(char *szReport, unsigned char uReportType = REPORT_HEX); void GetHash(quint_8 *puDest);private: // Private SHA-1 transformation void Transform(quint_32 *state, quint_8 *buffer); // Member variables quint_8 m_workspace[64]; SHA1_WORKSPACE_BLOCK *m_block; // SHA1 pointer to the byte array above};#endif
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