source: source/ariba/utility/misc/sha1.h@ 6874

// [License]

// 100% free public domain implementation of the SHA-1 algorithm

// by Dominik Reichl <dominik.reichl@t-online.de>

// [License]

/*

        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___



#if !defined(SHA1_UTILITY_FUNCTIONS) && !defined(SHA1_NO_UTILITY_FUNCTIONS)

#define SHA1_UTILITY_FUNCTIONS

#endif



#include <memory.h> // Needed for memset and memcpy

#include <boost/cstdint.hpp>



#ifdef SHA1_UTILITY_FUNCTIONS

#include <stdio.h>  // Needed for file access and sprintf

#include <string.h> // Needed for strcat and strcpy

#endif





// You can define the endian mode in your files, without modifying the SHA1

// source files. Just #define SHA1_LITTLE_ENDIAN or #define SHA1_BIG_ENDIAN

// in your files, before including the SHA1.h header file. If you don't

// define anything, the class defaults to little endian.



#if !defined(SHA1_LITTLE_ENDIAN) && !defined(SHA1_BIG_ENDIAN)

#define SHA1_LITTLE_ENDIAN

#endif



// Same here. If you want variable wiping, #define SHA1_WIPE_VARIABLES, if

// not, #define SHA1_NO_WIPE_VARIABLES. If you don't define anything, it

// defaults to wiping.



#if !defined(SHA1_WIPE_VARIABLES) && !defined(SHA1_NO_WIPE_VARIABLES)

#define SHA1_WIPE_VARIABLES

#endif



/////////////////////////////////////////////////////////////////////////////

// Define 8- and 32-bit variables



#define UINT_8 uint8_t

#define UINT_32 uint32_t



/////////////////////////////////////////////////////////////////////////////

// Declare SHA1 workspace



typedef union

{

    UINT_8  c[64];

    UINT_32 l[16];

} SHA1_WORKSPACE_BLOCK;



class CSHA1

{

public:

#ifdef SHA1_UTILITY_FUNCTIONS

    // Two different formats for ReportHash(...)

    enum

    {

        REPORT_HEX = 0,

        REPORT_DIGIT = 1

    };

#endif



    // Constructor and Destructor

    CSHA1();

    ~CSHA1();



    UINT_32 m_state[5];

    UINT_32 m_count[2];

    UINT_32 __reserved1[1];

    UINT_8  m_buffer[64];

    UINT_8  m_digest[20];

    UINT_32 __reserved2[3];



    void Reset();



    // Update the hash value

    void Update(UINT_8 *data, UINT_32 len);

#ifdef SHA1_UTILITY_FUNCTIONS



    bool HashFile(char *szFileName);

#endif



    // Finalize hash and report

    void Final();



    // Report functions: as pre-formatted and raw data

#ifdef SHA1_UTILITY_FUNCTIONS



    void ReportHash(char *szReport, unsigned char uReportType = REPORT_HEX);

#endif



    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