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/*
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___
//#define UINT_8 unsigned char
//#define UINT_32 unsigned long
#include <stdio.h> // Needed for file access
#include <memory.h> // Needed for memset and memcpy
#include <string.h> // Needed for strcat and strcpy
#include <iostream>
#include <stdlib.h>
// If you're compiling big endian, just comment out the following line
#define SHA1_LITTLE_ENDIAN
// #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 UINT_32
#define UINT_8 unsigned __int8
#define UINT_32 unsigned __int32
#endif
/////////////////////////////////////////////////////////////////////////////
// Declare SHA1 workspace
typedef union
{
UINT_8 c[64];
UINT_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();
UINT_32 m_state[5];
UINT_32 m_count[2];
UINT_8 m_buffer[64];
UINT_8 m_digest[20];
void Reset();
// Update the hash value
void Update(UINT_8 *data, UINT_32 len);
bool HashFile(char *szFileName);
// Finalize hash and report
void Final();
void ReportHash(char *szReport, unsigned char uReportType = REPORT_HEX);
void GetHash(UINT_8 *puDest);
private:
// Private SHA-1 transformation
void Transform(UINT_32 *state, UINT_8 *buffer);
// Member variables
UINT_8 m_workspace[64];
SHA1_WORKSPACE_BLOCK *m_block; // SHA1 pointer to the byte array above
};
#endif
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