// -*- 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