LXR linux/arch/s390/crypto/sha.h

   1/*
   2 * Cryptographic API.
   3 *
   4 * s390 generic implementation of the SHA Secure Hash Algorithms.
   5 *
   6 * Copyright IBM Corp. 2007
   7 * Author(s): Jan Glauber (jang@de.ibm.com)
   8 *
   9 * This program is free software; you can redistribute it and/or modify it
  10 * under the terms of the GNU General Public License as published by the Free
  11 * Software Foundation; either version 2 of the License, or (at your option)
  12 * any later version.
  13 *
  14 */
  15#ifndef _CRYPTO_ARCH_S390_SHA_H
  16#define _CRYPTO_ARCH_S390_SHA_H
  17
  18#include <linux/crypto.h>
  19#include <crypto/sha.h>
  20
  21/* must be big enough for the largest SHA variant */
  22#define SHA_MAX_STATE_SIZE      16
  23#define SHA_MAX_BLOCK_SIZE      SHA512_BLOCK_SIZE
  24
  25struct s390_sha_ctx {
  26        u64 count;              /* message length in bytes */
  27        u32 state[SHA_MAX_STATE_SIZE];
  28        u8 buf[2 * SHA_MAX_BLOCK_SIZE];
  29        int func;               /* KIMD function to use */
  30};
  31
  32struct shash_desc;
  33
  34int s390_sha_update(struct shash_desc *desc, const u8 *data, unsigned int len);
  35int s390_sha_final(struct shash_desc *desc, u8 *out);
  36
  37#endif
  38