src/shared/gcrypt-util.h

   1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
   2
   3 /***
   4   This file is part of systemd.
   5
   6   Copyright 2016 Zbigniew Jędrzejewski-Szmek
   7
   8   systemd is free software; you can redistribute it and/or modify it
   9   under the terms of the GNU Lesser General Public License as published by
  10   the Free Software Foundation; either version 2.1 of the License, or
  11   (at your option) any later version.
  12
  13   systemd 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 License
  19   along with systemd; If not, see <http://www.gnu.org/licenses/>.
  20 ***/
  21
  22 #include <errno.h>
  23 #include <stdbool.h>
  24 #include <stddef.h>
  25
  26 #if HAVE_GCRYPT
  27 #include <gcrypt.h>
  28
  29 void initialize_libgcrypt(bool secmem);
  30 int string_hashsum(const char *s, size_t len, int md_algorithm, char **out);
  31 #endif
  32
  33 static inline int string_hashsum_sha224(const char *s, size_t len, char **out) {
  34 #if HAVE_GCRYPT
  35         return string_hashsum(s, len, GCRY_MD_SHA224, out);
  36 #else
  37         return -EOPNOTSUPP;
  38 #endif
  39 }
  40
  41 static inline int string_hashsum_sha256(const char *s, size_t len, char **out) {
  42 #if HAVE_GCRYPT
  43         return string_hashsum(s, len, GCRY_MD_SHA256, out);
  44 #else
  45         return -EOPNOTSUPP;
  46 #endif
  47 }