lib/x509_b64.h

   1 /*
   2  * Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005 Free Software Foundation
   3  *
   4  * Author: Nikos Mavrogiannopoulos
   5  *
   6  * This file is part of GNUTLS.
   7  *
   8  * The GNUTLS library is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Lesser General Public License
  10  * as published by the Free Software Foundation; either version 2.1 of
  11  * the License, or (at your option) any later version.
  12  *
  13  * This library is distributed in the hope that it will be useful, but
  14  * WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * Lesser General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public
  19  * License along with this library; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
  21  * USA
  22  *
  23  */
  24
  25 int _gnutls_base64_encode (const uint8_t * data, size_t data_size,
  26                            uint8_t ** result);
  27 int _gnutls_fbase64_encode (const char *msg, const uint8_t * data,
  28                             int data_size, uint8_t ** result);
  29 int _gnutls_base64_decode (const uint8_t * data, size_t data_size,
  30                            uint8_t ** result);
  31 int _gnutls_fbase64_decode (const char *header, const uint8_t * data,
  32                             size_t data_size, uint8_t ** result);
  33
  34 #define B64SIZE( data_size) ((data_size%3==0)?((data_size*4)/3):(4+((data_size/3)*4)))
  35
  36 /* The size for B64 encoding + newlines plus header
  37  */
  38
  39 #define HEADSIZE( hsize) \
  40         sizeof("-----BEGIN ")-1+sizeof("-----")-1+ \
  41         sizeof("\n-----END ")-1+sizeof("-----\n")-1+hsize+hsize
  42
  43 #define B64FSIZE( hsize, dsize) \
  44         (B64SIZE(dsize) + HEADSIZE(hsize) + /*newlines*/ \
  45         B64SIZE(dsize)/64 + (((B64SIZE(dsize) % 64) > 0) ? 1 : 0))