2 * This file is part of DisOrder
3 * Copyright (C) 2004, 2005, 2007, 2008 Richard Kettlewell
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 3 of the License, or
8 * (at your option) any later version.
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, see <http://www.gnu.org/licenses/>.
18 /** @file lib/hex.h @brief Hexadecimal encoding and decoding */
23 char *hex(const uint8_t *ptr, size_t n);
24 /* convert an octet-string to hex */
26 uint8_t *unhex(const char *s, size_t *np);
27 /* convert a hex string back to an octet string */
29 int unhexdigit(int c);
30 /* if @c@ is a hex digit, return its value. else return -1 and log an error. */
32 int unhexdigitq(int c);
33 /* same as unhexdigit() but doesn't issue an error message */