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fixing incorrect buffer size allocation, and unsafe integer size type

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This commit is contained in:
SlowRiot 2014-11-20 01:58:57 +00:00
parent 87333f3ae2
commit 76cc2bf7b4
2 changed files with 64 additions and 60 deletions
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38
libs/sha1/sha1.h
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@ -1,27 +1,29 @@
/*
sha1.h - header of
============
SHA-1 in C++
============
100% Public Domain.
Original C Code
-- Steve Reid <steve@edmweb.com>
Small changes to fit into bglibs
-- Bruce Guenter <bruce@untroubled.org>
Translation to simpler C++ Code
-- Volker Grabsch <vog@notjusthosting.com>
Fixing bugs and improving style
-- Eugene Hopkinson <slowriot at voxelstorm dot com>
*/
#ifndef SHA1_HPP
#define SHA1_HPP
#include <iostream>
#include <string>
class SHA1
{
public:
@ -30,28 +32,28 @@ public:
void update(std::istream &is);
std::string final();
static std::string from_file(const std::string &filename);
private:
typedef unsigned long int uint32; /* just needs to be at least 32bit */
typedef unsigned long long uint64; /* just needs to be at least 64bit */
static const unsigned int DIGEST_INTS = 5; /* number of 32bit integers per SHA1 digest */
static const unsigned int BLOCK_INTS = 16; /* number of 32bit integers per SHA1 block */
static const unsigned int BLOCK_BYTES = BLOCK_INTS * 4;
uint32 digest[DIGEST_INTS];
std::string buffer;
uint64 transforms;
void reset();
void transform(uint32 block[BLOCK_BYTES]);
static void buffer_to_block(const std::string &buffer, uint32 block[BLOCK_BYTES]);
static void read(std::istream &is, std::string &s, int max);
static void read(std::istream &is, std::string &s, size_t max);
static void buffer_to_block(const std::string &buffer, uint32 block[BLOCK_INTS]);
};
std::string sha1(const std::string &string);
#endif /* SHA1_HPP */