1 // -*- mode: cpp; mode: fold -*-
3 // $Id: md5.h,v 1.4 1999/10/24 06:53:12 jgg Exp $
4 /* ######################################################################
6 MD5SumValue - Storage for a MD5Sum
7 MD5Summation - MD5 Message Digest Algorithm.
9 This is a C++ interface to a set of MD5Sum functions. The class can
10 store a MD5Sum in 16 bytes of memory.
12 A MD5Sum is used to generate a (hopefully) unique 16 byte number for a
13 block of data. This can be used to gaurd against corruption of a file.
14 MD5 should not be used for tamper protection, use SHA or something more
17 There are two classes because computing a MD5 is not a continual
18 operation unless 64 byte blocks are used. Also the summation requires an
19 extra 18*4 bytes to operate.
21 ##################################################################### */
27 #pragma interface "dsync/md5.h"
37 friend class MD5Summation;
38 unsigned char Sum[4*4];
43 bool operator ==(const MD5SumValue &rhs) const;
45 inline void Value(unsigned char S[16])
46 {for (int I = 0; I != sizeof(Sum); I++) S[I] = Sum[I];};
47 inline operator string() const {return Value();};
49 inline void Set(unsigned char S[16])
50 {for (int I = 0; I != sizeof(Sum); I++) Sum[I] = S[I];};
52 MD5SumValue(string Str);
58 unsigned char Buf[4*4];
59 unsigned char Bytes[2*4];
60 unsigned char In[16*4];
65 bool Add(const unsigned char *Data,unsigned long Size);
66 inline bool Add(const char *Data) {return Add((unsigned char *)Data,strlen(Data));};
67 bool AddFD(int Fd,unsigned long Size);
68 inline bool Add(const unsigned char *Beg,const unsigned char *End)
69 {return Add(Beg,End-Beg);};