309 lines
8.6 KiB
C++
309 lines
8.6 KiB
C++
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/*
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100% free public domain implementation of the SHA-1 algorithm
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by Dominik Reichl <dominik.reichl@t-online.de>
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Web: http://www.dominik-reichl.de/
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Version 2.1 - 2012-06-19
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- Deconstructor (resetting internal variables) is now only
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implemented if SHA1_WIPE_VARIABLES is defined (which is the
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default).
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- Renamed inclusion guard to contain a GUID.
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- Demo application is now using C++/STL objects and functions.
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- Unicode build of the demo application now outputs the hashes of both
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the ANSI and Unicode representations of strings.
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- Various other demo application improvements.
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Version 2.0 - 2012-06-14
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- Added 'limits.h' include.
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- Renamed inclusion guard and macros for compliancy (names beginning
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with an underscore are reserved).
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Version 1.9 - 2011-11-10
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- Added Unicode test vectors.
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- Improved support for hashing files using the HashFile method that
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are larger than 4 GB.
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- Improved file hashing performance (by using a larger buffer).
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- Disabled unnecessary compiler warnings.
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- Internal variables are now private.
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Version 1.8 - 2009-03-16
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- Converted project files to Visual Studio 2008 format.
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- Added Unicode support for HashFile utility method.
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- Added support for hashing files using the HashFile method that are
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larger than 2 GB.
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- HashFile now returns an error code instead of copying an error
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message into the output buffer.
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- GetHash now returns an error code and validates the input parameter.
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- Added ReportHashStl STL utility method.
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- Added REPORT_HEX_SHORT reporting mode.
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- Improved Linux compatibility of test program.
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Version 1.7 - 2006-12-21
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- Fixed buffer underrun warning that appeared when compiling with
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Borland C Builder (thanks to Rex Bloom and Tim Gallagher for the
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patch).
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- Breaking change: ReportHash writes the final hash to the start
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of the buffer, i.e. it's not appending it to the string anymore.
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- Made some function parameters const.
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- Added Visual Studio 2005 project files to demo project.
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Version 1.6 - 2005-02-07 (thanks to Howard Kapustein for patches)
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- You can set the endianness in your files, no need to modify the
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header file of the CSHA1 class anymore.
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- Aligned data support.
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- Made support/compilation of the utility functions (ReportHash and
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HashFile) optional (useful when bytes count, for example in embedded
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environments).
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Version 1.5 - 2005-01-01
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- 64-bit compiler compatibility added.
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- Made variable wiping optional (define SHA1_WIPE_VARIABLES).
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- Removed unnecessary variable initializations.
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- ROL32 improvement for the Microsoft compiler (using _rotl).
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Version 1.4 - 2004-07-22
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- CSHA1 now compiles fine with GCC 3.3 under Mac OS X (thanks to Larry
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Hastings).
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Version 1.3 - 2003-08-17
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- Fixed a small memory bug and made a buffer array a class member to
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ensure correct working when using multiple CSHA1 class instances at
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one time.
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Version 1.2 - 2002-11-16
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- Borlands C++ compiler seems to have problems with string addition
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using sprintf. Fixed the bug which caused the digest report function
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not to work properly. CSHA1 is now Borland compatible.
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Version 1.1 - 2002-10-11
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- Removed two unnecessary header file includes and changed BOOL to
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bool. Fixed some minor bugs in the web page contents.
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Version 1.0 - 2002-06-20
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- First official release.
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================ Test Vectors ================
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SHA1("abc" in ANSI) =
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A9993E36 4706816A BA3E2571 7850C26C 9CD0D89D
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SHA1("abc" in Unicode LE) =
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9F04F41A 84851416 2050E3D6 8C1A7ABB 441DC2B5
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SHA1("abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq"
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in ANSI) =
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84983E44 1C3BD26E BAAE4AA1 F95129E5 E54670F1
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SHA1("abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq"
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in Unicode LE) =
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51D7D876 9AC72C40 9C5B0E3F 69C60ADC 9A039014
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SHA1(A million repetitions of "a" in ANSI) =
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34AA973C D4C4DAA4 F61EEB2B DBAD2731 6534016F
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SHA1(A million repetitions of "a" in Unicode LE) =
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C4609560 A108A0C6 26AA7F2B 38A65566 739353C5
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*/
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#ifndef SHA1_H_A545E61D43E9404E8D736869AB3CBFE7
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#define SHA1_H_A545E61D43E9404E8D736869AB3CBFE7
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// KevinJ:
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#include "RakMemoryOverride.hpp"
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#include <stdio.h> // Needed for file access
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#include <memory.h> // Needed for memset and memcpy
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#include <string.h> // Needed for strcat and strcpy
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#include "Export.hpp"
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//#define MAX_FILE_READ_BUFFER 8000
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#define SHA1_LENGTH 20
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#if !defined(SHA1_UTILITY_FUNCTIONS) && !defined(SHA1_NO_UTILITY_FUNCTIONS)
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#define SHA1_UTILITY_FUNCTIONS
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#endif
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#if !defined(SHA1_STL_FUNCTIONS) && !defined(SHA1_NO_STL_FUNCTIONS)
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#define SHA1_STL_FUNCTIONS
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#if !defined(SHA1_UTILITY_FUNCTIONS)
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#error STL functions require SHA1_UTILITY_FUNCTIONS.
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#endif
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#endif
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#include <memory.h>
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#include <limits.h>
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#ifdef SHA1_UTILITY_FUNCTIONS
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#include <stdio.h>
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#include <string.h>
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#endif
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#ifdef SHA1_STL_FUNCTIONS
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#include <string>
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#endif
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#ifdef _MSC_VER
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#include <stdlib.h>
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#endif
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// You can define the endian mode in your files without modifying the SHA-1
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// source files. Just #define SHA1_LITTLE_ENDIAN or #define SHA1_BIG_ENDIAN
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// in your files, before including the DR_SHA1.h header file. If you don't
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// define anything, the class defaults to little endian.
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#if !defined(SHA1_LITTLE_ENDIAN) && !defined(SHA1_BIG_ENDIAN)
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#define SHA1_LITTLE_ENDIAN
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#endif
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// If you want variable wiping, #define SHA1_WIPE_VARIABLES, if not,
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// #define SHA1_NO_WIPE_VARIABLES. If you don't define anything, it
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// defaults to wiping.
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#if !defined(SHA1_WIPE_VARIABLES) && !defined(SHA1_NO_WIPE_VARIABLES)
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#define SHA1_WIPE_VARIABLES
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#endif
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#if defined(SHA1_HAS_TCHAR)
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#include <tchar.h>
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#else
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#ifdef _MSC_VER
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#include <tchar.h>
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#else
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#ifndef TCHAR
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#ifdef _WIN32
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#include <tchar.h>
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#else
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#define TCHAR char
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#endif
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#endif
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#ifndef _T
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#define _T(__x) (__x)
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#define _tmain main
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#define _tprintf printf
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#define _getts gets
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#define _tcslen strlen
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#define _tfopen fopen
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#define _tcscpy strcpy
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#define _tcscat strcat
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#define _sntprintf snprintf
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#endif
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#endif
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#endif
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///////////////////////////////////////////////////////////////////////////
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// Define variable types
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#ifndef UINT_8
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#ifdef _MSC_VER // Compiling with Microsoft compiler
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#define UINT_8 unsigned __int8
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#else // !_MSC_VER
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#define UINT_8 unsigned char
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#endif // _MSC_VER
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#endif
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#ifndef UINT_32
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#ifdef _MSC_VER // Compiling with Microsoft compiler
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#define UINT_32 unsigned __int32
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#else // !_MSC_VER
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#if (ULONG_MAX == 0xFFFFFFFFUL)
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#define UINT_32 unsigned long
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#else
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#define UINT_32 unsigned int
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#endif
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#endif // _MSC_VER
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#endif // UINT_32
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#ifndef INT_64
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#ifdef _MSC_VER // Compiling with Microsoft compiler
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#define INT_64 __int64
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#else // !_MSC_VER
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#define INT_64 long long
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#endif // _MSC_VER
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#endif // INT_64
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#ifndef UINT_64
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#ifdef _MSC_VER // Compiling with Microsoft compiler
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#define UINT_64 unsigned __int64
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#else // !_MSC_VER
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#define UINT_64 unsigned long long
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#endif // _MSC_VER
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#endif // UINT_64
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///////////////////////////////////////////////////////////////////////////
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// Declare SHA-1 workspace
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typedef union
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{
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UINT_8 c[64];
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UINT_32 l[16];
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} SHA1_WORKSPACE_BLOCK;
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class RAK_DLL_EXPORT CSHA1
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{
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public:
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#ifdef SHA1_UTILITY_FUNCTIONS
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// Different formats for ReportHash(Stl)
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enum REPORT_TYPE
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{
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REPORT_HEX = 0,
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REPORT_DIGIT = 1,
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REPORT_HEX_SHORT = 2
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};
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#endif
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// Constructor and destructor
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CSHA1();
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#ifdef SHA1_WIPE_VARIABLES
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~CSHA1();
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#endif
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void Reset();
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// Hash in binary data and strings
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void Update(const UINT_8* pbData, UINT_32 uLen);
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#ifdef SHA1_UTILITY_FUNCTIONS
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// Hash in file contents
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bool HashFile(const TCHAR* tszFileName);
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#endif
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// Finalize hash; call it before using ReportHash(Stl)
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void Final();
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#ifdef SHA1_UTILITY_FUNCTIONS
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bool ReportHash(TCHAR* tszReport, REPORT_TYPE rtReportType = REPORT_HEX) const;
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#endif
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#ifdef SHA1_STL_FUNCTIONS
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bool ReportHashStl(std::basic_string<TCHAR>& strOut, REPORT_TYPE rtReportType =
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REPORT_HEX) const;
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#endif
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// Get the raw message digest (20 bytes)
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bool GetHash(UINT_8* pbDest20) const;
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unsigned char * GetHash( void ) const;
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// KevinJ: http://cseweb.ucsd.edu/~mihir/papers/hmac-cb.pdf
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static void HMAC(unsigned char *sharedKey, int sharedKeyLength, unsigned char *data, int dataLength, unsigned char output[SHA1_LENGTH]);
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private:
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// Private SHA-1 transformation
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void Transform(UINT_32* pState, const UINT_8* pBuffer);
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// Member variables
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UINT_32 m_state[5];
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UINT_32 m_count[2];
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UINT_32 m_reserved0[1]; // Memory alignment padding
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UINT_8 m_buffer[64];
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UINT_8 m_digest[20];
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UINT_32 m_reserved1[3]; // Memory alignment padding
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UINT_8 m_workspace[64];
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SHA1_WORKSPACE_BLOCK* m_block; // SHA1 pointer to the byte array above
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};
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#endif // SHA1_H_A545E61D43E9404E8D736869AB3CBFE7
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