include/linux/sha256.h

   1 /*
   2  *  Copyright (C) 2014 Red Hat Inc.
   3  *
   4  *  Author: Vivek Goyal <vgoyal@redhat.com>
   5  *
   6  * This source code is licensed under the GNU General Public License,
   7  * Version 2.  See the file COPYING for more details.
   8  */
   9
  10 #ifndef SHA256_H
  11 #define SHA256_H
  12
  13 #include <linux/types.h>
  14 #include <crypto/sha.h>
  15
  16 /*
  17  * Stand-alone implementation of the SHA256 algorithm. It is designed to
  18  * have as little dependencies as possible so it can be used in the
  19  * kexec_file purgatory. In other cases you should use the implementation in
  20  * crypto/.
  21  *
  22  * For details see lib/sha256.c
  23  */
  24
  25 extern int sha256_init(struct sha256_state *sctx);
  26 extern int sha256_update(struct sha256_state *sctx, const u8 *input,
  27                          unsigned int length);
  28 extern int sha256_final(struct sha256_state *sctx, u8 *hash);
  29
  30 #endif /* SHA256_H */