Ajout de la classe cypher

/*

  This file is part of SLL.

  Copyright (C) 2008 Sebastien LUTTRINGER <contact@seblu.net>

  SLL 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; version 2 of the License.

  SLL 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 SLL; if not, write to the Free Software

  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

*/

#include "slm.hh"

#include "cypher.hh"

#include <openssl/sha.h>

#include <openssl/bio.h>

#include <openssl/buffer.h>

#include <openssl/evp.h>

#include <openssl/md5.h>

/**

 * return sha1 of data

 *

 * @param data data to sha1 and base64

 * @param size size of data

 *

 * @return malloc'ed sha1 size

 */

unsigned char *Cypher::sha1(char *data, size_t size) {

  unsigned char *md = new unsigned char[SHA_DIGEST_LENGTH];

  // compute sha1

  SHA1((const unsigned char *) data, size, md);

  return md;

}

/**

 * return sha1 of data with base64 encoding

 *

 * @param data data to sha1 and base64

 * @param size size of data

 *

 * @return malloc'ed sha1 size

 */

char *Cypher::sha1_64(char *data, size_t size) {

  unsigned char md[SHA_DIGEST_LENGTH];

  char *buf;

  BIO *bmem, *b64;

  BUF_MEM *bptr;

  // compute sha1

  SHA1((const unsigned char *) data, size, md);

  // compute b64

  b64 = BIO_new(BIO_f_base64());

  bmem = BIO_new(BIO_s_mem());

  b64 = BIO_push(b64, bmem);

  BIO_write(b64, md, SHA_DIGEST_LENGTH);

  BIO_flush(b64);

  BIO_get_mem_ptr(b64, &bptr);

  if (bptr->length > 0) {

    buf2 = new char[bptr->length];

    memcpy(buf, bptr->data, bptr->length - 1);

    buf[bptr->length - 1] = 0;

  }

  BIO_free_all(b64);

  return buf;

}

/*

  This file is part of SLL.

  Copyright (C) 2008 Sebastien LUTTRINGER <contact@seblu.net>

  SLL 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; version 2 of the License.

  SLL 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 SLL; if not, write to the Free Software

  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

*/

#ifndef CYPHER_HH

# define CYPHER_HH

# include <stddef.h>

class Cypher {

public:

  unsigned char *sha1(char *, size_t);

  unsigned char *sha1_64(char *, size_t);

protected:

};

#endif