apt-pkg/contrib/sha2.h

   1 // -*- mode: cpp; mode: fold -*-
   2 // Description                                                          /*{{{*/
   3 // $Id: sha512.h,v 1.3 2001/05/07 05:05:47 jgg Exp $
   4 /* ######################################################################
   5
   6    SHA{512,256}SumValue - Storage for a SHA-{512,256} hash.
   7    SHA{512,256}Summation - SHA-{512,256} Secure Hash Algorithm.
   8
   9    This is a C++ interface to a set of SHA{512,256}Sum functions, that mirrors
  10    the equivalent MD5 & SHA1 classes.
  11
  12    ##################################################################### */
  13                                                                         /*}}}*/
  14 #ifndef APTPKG_SHA2_H
  15 #define APTPKG_SHA2_H
  16
  17 #include <string>
  18 #include <cstring>
  19 #include <algorithm>
  20 #include <stdint.h>
  21
  22 #include "sha2_internal.h"
  23 #include "hashsum_template.h"
  24
  25 using std::string;
  26 using std::min;
  27
  28 class SHA512Summation;
  29 class SHA256Summation;
  30
  31 typedef HashSumValue<512> SHA512SumValue;
  32 typedef HashSumValue<256> SHA256SumValue;
  33
  34 class SHA256Summation
  35 {
  36    SHA256_CTX ctx;
  37    unsigned char Sum[32];
  38    bool Done;
  39
  40    public:
  41
  42    bool Add(const unsigned char *inbuf,unsigned long inlen);
  43    inline bool Add(const char *Data) {return Add((unsigned char *)Data,strlen(Data));};
  44    bool AddFD(int Fd,unsigned long Size);
  45    inline bool Add(const unsigned char *Beg,const unsigned char *End)
  46                   {return Add(Beg,End-Beg);};
  47    SHA256SumValue Result();
  48
  49    SHA256Summation();
  50 };
  51
  52 class SHA512Summation
  53 {
  54    SHA512_CTX ctx;
  55    unsigned char Sum[64];
  56    bool Done;
  57
  58    public:
  59
  60    bool Add(const unsigned char *inbuf,unsigned long inlen);
  61    inline bool Add(const char *Data) {return Add((unsigned char *)Data,strlen(Data));};
  62    bool AddFD(int Fd,unsigned long Size);
  63    inline bool Add(const unsigned char *Beg,const unsigned char *End)
  64                   {return Add(Beg,End-Beg);};
  65    SHA512SumValue Result();
  66
  67    SHA512Summation();
  68 };
  69
  70
  71 #endif