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implement MarkAndSweep in cc instead of header
[apt.git] / apt-pkg / contrib / sha2.h
1 // -*- mode: cpp; mode: fold -*-
2 // Description /*{{{*/
3 // $Id: sha512.h,v 1.3 2001/05/07 05:05:47 jgg Exp $
4 /* ######################################################################
5
6 SHA{512,256}SumValue - Storage for a SHA-{512,256} hash.
7 SHA{512,256}Summation - SHA-{512,256} Secure Hash Algorithm.
8
9 This is a C++ interface to a set of SHA{512,256}Sum functions, that mirrors
10 the equivalent MD5 & SHA1 classes.
11
12 ##################################################################### */
13 /*}}}*/
14 #ifndef APTPKG_SHA2_H
15 #define APTPKG_SHA2_H
16
17 #include <cstring>
18
19 #include "sha2_internal.h"
20 #include "hashsum_template.h"
21
22 #ifndef APT_10_CLEANER_HEADERS
23 #include <string>
24 #include <algorithm>
25 #include <stdint.h>
26 #endif
27
28
29 typedef HashSumValue<512> SHA512SumValue;
30 typedef HashSumValue<256> SHA256SumValue;
31
32 class SHA2SummationBase : public SummationImplementation
33 {
34 protected:
35 bool Done;
36 public:
37 bool Add(const unsigned char *inbuf, unsigned long long len) = 0;
38
39 void Result();
40 };
41
42 class SHA256Summation : public SHA2SummationBase
43 {
44 SHA256_CTX ctx;
45 unsigned char Sum[32];
46
47 public:
48 bool Add(const unsigned char *inbuf, unsigned long long len)
49 {
50 if (Done)
51 return false;
52 SHA256_Update(&ctx, inbuf, len);
53 return true;
54 };
55 using SummationImplementation::Add;
56
57 SHA256SumValue Result()
58 {
59 if (!Done) {
60 SHA256_Final(Sum, &ctx);
61 Done = true;
62 }
63 SHA256SumValue res;
64 res.Set(Sum);
65 return res;
66 };
67 SHA256Summation()
68 {
69 SHA256_Init(&ctx);
70 Done = false;
71 memset(&Sum, 0, sizeof(Sum));
72 };
73 };
74
75 class SHA512Summation : public SHA2SummationBase
76 {
77 SHA512_CTX ctx;
78 unsigned char Sum[64];
79
80 public:
81 bool Add(const unsigned char *inbuf, unsigned long long len)
82 {
83 if (Done)
84 return false;
85 SHA512_Update(&ctx, inbuf, len);
86 return true;
87 };
88 using SummationImplementation::Add;
89
90 SHA512SumValue Result()
91 {
92 if (!Done) {
93 SHA512_Final(Sum, &ctx);
94 Done = true;
95 }
96 SHA512SumValue res;
97 res.Set(Sum);
98 return res;
99 };
100 SHA512Summation()
101 {
102 SHA512_Init(&ctx);
103 Done = false;
104 memset(&Sum, 0, sizeof(Sum));
105 };
106 };
107
108
109 #endif