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 <string>
  18 #include <cstring>
  19 #include <algorithm>
  20
  21 using std::string;
  22 using std::min;
  23
  24 #include "hashsum_template.h"
  25
  26 class SHA1Summation;
  27
  28 typedef  HashSumValue<160> SHA1SumValue;
  29
  30 class SHA1Summation
  31 {
  32    /* assumes 64-bit alignment just in case */
  33    unsigned char Buffer[64] __attribute__((aligned(8)));
  34    unsigned char State[5*4] __attribute__((aligned(8)));
  35    unsigned char Count[2*4] __attribute__((aligned(8)));
  36    bool Done;
  37
  38    public:
  39
  40    bool Add(const unsigned char *inbuf,unsigned long inlen);
  41    inline bool Add(const char *Data) {return Add((unsigned char *)Data,strlen(Data));};
  42    bool AddFD(int Fd,unsigned long Size);
  43    inline bool Add(const unsigned char *Beg,const unsigned char *End)
  44                   {return Add(Beg,End-Beg);};
  45    SHA1SumValue Result();
  46
  47    SHA1Summation();
  48 };
  49
  50 #endif