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// -*- mode: cpp; mode: fold -*-
// Description /*{{{*/
// $Id: sha1.h,v 1.3 2001/05/07 05:05:47 jgg Exp $
/* ######################################################################
SHA1SumValue - Storage for a SHA-1 hash.
SHA1Summation - SHA-1 Secure Hash Algorithm.
This is a C++ interface to a set of SHA1Sum functions, that mirrors
the equivalent MD5 classes.
##################################################################### */
/*}}}*/
#ifndef APTPKG_SHA1_H
#define APTPKG_SHA1_H
#include <string>
#include <cstring>
#include <algorithm>
using std::string;
using std::min;
class SHA1Summation;
class SHA1SumValue
{
friend class SHA1Summation;
unsigned char Sum[20];
public:
// Accessors
bool operator ==(const SHA1SumValue &rhs) const;
string Value() const;
inline void Value(unsigned char S[20])
{for (int I = 0; I != sizeof(Sum); I++) S[I] = Sum[I];};
inline operator string() const {return Value();};
bool Set(string Str);
inline void Set(unsigned char S[20])
{for (int I = 0; I != sizeof(Sum); I++) Sum[I] = S[I];};
SHA1SumValue(string Str);
SHA1SumValue();
};
class SHA1Summation
{
/* assumes 64-bit alignment just in case */
unsigned char Buffer[64] __attribute__((aligned(8)));
unsigned char State[5*4] __attribute__((aligned(8)));
unsigned char Count[2*4] __attribute__((aligned(8)));
bool Done;
public:
bool Add(const unsigned char *inbuf,unsigned long inlen);
inline bool Add(const char *Data) {return Add((unsigned char *)Data,strlen(Data));};
bool AddFD(int Fd,unsigned long Size);
inline bool Add(const unsigned char *Beg,const unsigned char *End)
{return Add(Beg,End-Beg);};
SHA1SumValue Result();
SHA1Summation();
};
#endif
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