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// -*- mode: cpp; mode: fold -*-
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// $Id: md5.h,v 1.6 2001/05/07 05:06:52 jgg Exp $
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/* ######################################################################
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MD5SumValue - Storage for a MD5Sum
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MD5Summation - MD5 Message Digest Algorithm.
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This is a C++ interface to a set of MD5Sum functions. The class can
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store a MD5Sum in 16 bytes of memory.
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A MD5Sum is used to generate a (hopefully) unique 16 byte number for a
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block of data. This can be used to gaurd against corruption of a file.
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MD5 should not be used for tamper protection, use SHA or something more
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There are two classes because computing a MD5 is not a continual
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operation unless 64 byte blocks are used. Also the summation requires an
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extra 18*4 bytes to operate.
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##################################################################### */
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#pragma interface "apt-pkg/md5.h"
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friend class MD5Summation;
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unsigned char Sum[4*4];
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bool operator ==(const MD5SumValue &rhs) const;
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inline void Value(unsigned char S[16])
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{for (int I = 0; I != sizeof(Sum); I++) S[I] = Sum[I];};
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inline operator string() const {return Value();};
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inline void Set(unsigned char S[16])
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{for (int I = 0; I != sizeof(Sum); I++) Sum[I] = S[I];};
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MD5SumValue(string Str);
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unsigned char Buf[4*4];
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unsigned char Bytes[2*4];
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unsigned char In[16*4];
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bool Add(const unsigned char *Data,unsigned long Size);
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inline bool Add(const char *Data) {return Add((unsigned char *)Data,strlen(Data));};
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bool AddFD(int Fd,unsigned long Size);
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inline bool Add(const unsigned char *Beg,const unsigned char *End)
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{return Add(Beg,End-Beg);};