You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
91 lines
2.6 KiB
91 lines
2.6 KiB
/***************************************************************************
|
|
* Copyright (C) 2005 by Joris Guisson *
|
|
* joris.guisson@gmail.com *
|
|
* *
|
|
* This program 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. *
|
|
* *
|
|
* This program 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 this program; if not, write to the *
|
|
* Free Software Foundation, Inc., *
|
|
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. *
|
|
***************************************************************************/
|
|
#ifndef BTSHA1HASHGEN_H
|
|
#define BTSHA1HASHGEN_H
|
|
|
|
#include "constants.h"
|
|
#include "sha1hash.h"
|
|
|
|
namespace bt
|
|
{
|
|
|
|
/**
|
|
* @author Joris Guisson
|
|
*
|
|
* Generates a SHA1 hash, code based on wikipedia's pseudocode
|
|
* There are 2 ways to use this class :
|
|
* - generate : all data is present from the start
|
|
* - start, update and end : data can be delivered in chunks
|
|
*
|
|
* Mixing the 2, is not a good idea
|
|
*/
|
|
class SHA1HashGen
|
|
{
|
|
Uint32 h0;
|
|
Uint32 h1;
|
|
Uint32 h2;
|
|
Uint32 h3;
|
|
Uint32 h4;
|
|
Uint8 tmp[64];
|
|
Uint32 tmp_len;
|
|
Uint32 total_len;
|
|
public:
|
|
SHA1HashGen();
|
|
~SHA1HashGen();
|
|
|
|
/**
|
|
* Generate a hash from a bunch of data.
|
|
* @param data The data
|
|
* @param len The length
|
|
* @return The SHA1 hash
|
|
*/
|
|
SHA1Hash generate(const Uint8* data,Uint32 len);
|
|
|
|
/**
|
|
* Start SHA1 hash generation in chunks.
|
|
*/
|
|
void start();
|
|
|
|
/**
|
|
* Update the hash.
|
|
* @param data The data
|
|
* @param len Length of the data
|
|
*/
|
|
void update(const Uint8* data,Uint32 len);
|
|
|
|
|
|
/**
|
|
* All data has been delivered, calculate the final hash.
|
|
* @return
|
|
*/
|
|
void end();
|
|
|
|
/**
|
|
* Get the hash generated.
|
|
*/
|
|
SHA1Hash get() const;
|
|
private:
|
|
void processChunk(const Uint8* c);
|
|
};
|
|
|
|
}
|
|
|
|
#endif
|