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1 // -*- mode: cpp; mode: fold -*-
2 // Description /*{{{*/
3 // $Id: md5.h,v 1.6 2001/05/07 05:06:52 jgg Exp $
4 /* ######################################################################
5
6 MD5SumValue - Storage for a MD5Sum
7 MD5Summation - MD5 Message Digest Algorithm.
8
9 This is a C++ interface to a set of MD5Sum functions. The class can
10 store a MD5Sum in 16 bytes of memory.
11
12 A MD5Sum is used to generate a (hopefully) unique 16 byte number for a
13 block of data. This can be used to guard against corruption of a file.
14 MD5 should not be used for tamper protection, use SHA or something more
15 secure.
16
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.
20
21 ##################################################################### */
22 /*}}}*/
23 #ifndef APTPKG_MD5_H
24 #define APTPKG_MD5_H
25
26 #include <stdint.h>
27
28 #include "hashsum_template.h"
29
30 #ifndef APT_10_CLEANER_HEADERS
31 #include <string>
32 #include <cstring>
33 #include <algorithm>
34 #endif
35 #ifndef APT_8_CLEANER_HEADERS
36 using std::string;
37 using std::min;
38 #endif
39
40 typedef HashSumValue<128> MD5SumValue;
41
42 class MD5Summation : public SummationImplementation
43 {
44 uint32_t Buf[4];
45 unsigned char Bytes[2*4];
46 unsigned char In[16*4];
47 bool Done;
48
49 public:
50
51 bool Add(const unsigned char *inbuf, unsigned long long inlen) APT_OVERRIDE APT_NONNULL(2);
52 using SummationImplementation::Add;
53
54 MD5SumValue Result();
55
56 MD5Summation();
57 };
58
59 #endif