/usr/include/apt-pkg/sha2.h is in libapt-pkg-dev 0.8.16~exp12ubuntu10.21.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 | // -*- mode: cpp; mode: fold -*-
// Description /*{{{*/
// $Id: sha512.h,v 1.3 2001/05/07 05:05:47 jgg Exp $
/* ######################################################################
SHA{512,256}SumValue - Storage for a SHA-{512,256} hash.
SHA{512,256}Summation - SHA-{512,256} Secure Hash Algorithm.
This is a C++ interface to a set of SHA{512,256}Sum functions, that mirrors
the equivalent MD5 & SHA1 classes.
##################################################################### */
/*}}}*/
#ifndef APTPKG_SHA2_H
#define APTPKG_SHA2_H
#include <string>
#include <cstring>
#include <algorithm>
#include <stdint.h>
#include "sha2_internal.h"
#include "hashsum_template.h"
typedef HashSumValue<512> SHA512SumValue;
typedef HashSumValue<256> SHA256SumValue;
class SHA2SummationBase : public SummationImplementation
{
protected:
bool Done;
public:
bool Add(const unsigned char *inbuf, unsigned long long len) = 0;
void Result();
};
class SHA256Summation : public SHA2SummationBase
{
SHA256_CTX ctx;
unsigned char Sum[32];
public:
bool Add(const unsigned char *inbuf, unsigned long long len)
{
if (Done)
return false;
SHA256_Update(&ctx, inbuf, len);
return true;
};
using SummationImplementation::Add;
SHA256SumValue Result()
{
if (!Done) {
SHA256_Final(Sum, &ctx);
Done = true;
}
SHA256SumValue res;
res.Set(Sum);
return res;
};
SHA256Summation()
{
SHA256_Init(&ctx);
Done = false;
};
};
class SHA512Summation : public SHA2SummationBase
{
SHA512_CTX ctx;
unsigned char Sum[64];
public:
bool Add(const unsigned char *inbuf, unsigned long long len)
{
if (Done)
return false;
SHA512_Update(&ctx, inbuf, len);
return true;
};
using SummationImplementation::Add;
SHA512SumValue Result()
{
if (!Done) {
SHA512_Final(Sum, &ctx);
Done = true;
}
SHA512SumValue res;
res.Set(Sum);
return res;
};
SHA512Summation()
{
SHA512_Init(&ctx);
Done = false;
};
};
#endif
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