apt-pkg/contrib/sha1.h

   1 // -*- mode: cpp; mode: fold -*-
   2 // Description                                                          /*{{{*/
   3 // $Id: sha1.h,v 1.3 2001/05/07 05:05:47 jgg Exp $
   4 /* ######################################################################
   5
   6    SHA1SumValue - Storage for a SHA-1 hash.
   7    SHA1Summation - SHA-1 Secure Hash Algorithm.
   8
   9    This is a C++ interface to a set of SHA1Sum functions, that mirrors
  10    the equivalent MD5 classes.
  11
  12    ##################################################################### */
  13                                                                         /*}}}*/
  14 #ifndef APTPKG_SHA1_H
  15 #define APTPKG_SHA1_H
  16
  17 #include "hashsum_template.h"
  18
  19 #ifndef APT_10_CLEANER_HEADERS
  20 #include <string>
  21 #include <cstring>
  22 #include <algorithm>
  23 #endif
  24 #ifndef APT_8_CLEANER_HEADERS
  25 using std::string;
  26 using std::min;
  27 #endif
  28
  29 typedef  HashSumValue<160> SHA1SumValue;
  30
  31 class SHA1Summation : public SummationImplementation
  32 {
  33    /* assumes 64-bit alignment just in case */
  34    unsigned char Buffer[64] __attribute__((aligned(8)));
  35    unsigned char State[5*4] __attribute__((aligned(8)));
  36    unsigned char Count[2*4] __attribute__((aligned(8)));
  37    bool Done;
  38
  39    public:
  40    bool Add(const unsigned char *inbuf, unsigned long long inlen) APT_OVERRIDE APT_NONNULL(2);
  41    using SummationImplementation::Add;
  42
  43    SHA1SumValue Result();
  44
  45    SHA1Summation();
  46 };
  47
  48 #endif