1 /* base64.h -- Encode binary data using printable characters.
2 Copyright (C) 2004 Free Software Foundation, Inc.
3 Written by Simon Josefsson.
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2, or (at your option)
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software Foundation,
17 Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
28 /* This uses that the expression (n+(k-1))/k means the smallest
29 integer >= n/k, i.e., the ceiling of n/k. */
30 #define BASE64_LENGTH(inlen) ((((inlen) + 2) / 3) * 4)
32 extern void base64_encode (const char *restrict in, size_t inlen,
33 char *restrict out, size_t outlen);
35 extern size_t base64_encode_alloc (const char *in, size_t inlen, char **out);
37 extern bool base64_decode (const char *restrict in, size_t inlen,
38 char *restrict out, size_t * outlen);
40 extern bool base64_decode_alloc (const char *in, size_t inlen,
41 char **out, size_t * outlen);