vladislavbelov
ffc4a56b9f
Fixes #6846 Differential Revision: https://code.wildfiregames.com/D5185 This was SVN commit r27965.
67 lines
1.7 KiB
C++
67 lines
1.7 KiB
C++
/* Copyright (C) 2010 Wildfire Games.
|
|
* This file is part of 0 A.D.
|
|
*
|
|
* 0 A.D. is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation, either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* 0 A.D. is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with 0 A.D. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#ifndef INCLUDED_MD5
|
|
#define INCLUDED_MD5
|
|
|
|
#include <cstring>
|
|
|
|
/**
|
|
* MD5 hashing algorithm. Note that MD5 is broken and must not be used for
|
|
* anything that requires security.
|
|
*/
|
|
class MD5
|
|
{
|
|
public:
|
|
static const size_t DIGESTSIZE = 16;
|
|
|
|
MD5();
|
|
|
|
void Update(const u8* data, size_t len)
|
|
{
|
|
// (Defined inline for efficiency in the common fixed-length fits-in-buffer case)
|
|
|
|
const size_t CHUNK_SIZE = sizeof(m_Buf);
|
|
|
|
m_InputLen += len;
|
|
|
|
// If we have enough space in m_Buf and won't flush, simply append the input
|
|
if (m_BufLen + len < CHUNK_SIZE)
|
|
{
|
|
memcpy(m_Buf + m_BufLen, data, len);
|
|
m_BufLen += len;
|
|
return;
|
|
}
|
|
|
|
// Fall back to non-inline function if we have to do more work
|
|
UpdateRest(data, len);
|
|
}
|
|
|
|
void Final(u8* digest);
|
|
|
|
private:
|
|
void InitState();
|
|
void UpdateRest(const u8* data, size_t len);
|
|
void Transform(const u32* in);
|
|
u32 m_Digest[4]; // internal state
|
|
u8 m_Buf[64]; // buffered input bytes
|
|
size_t m_BufLen; // bytes in m_Buf that are valid
|
|
u64 m_InputLen; // bytes
|
|
};
|
|
|
|
#endif // INCLUDED_MD5
|