arch/s390/crypto/sha.h

   1 /* SPDX-License-Identifier: GPL-2.0+ */
   2 /*
   3  * Cryptographic API.
   4  *
   5  * s390 generic implementation of the SHA Secure Hash Algorithms.
   6  *
   7  * Copyright IBM Corp. 2007
   8  * Author(s): Jan Glauber (jang@de.ibm.com)
   9  */
  10 #ifndef _CRYPTO_ARCH_S390_SHA_H
  11 #define _CRYPTO_ARCH_S390_SHA_H
  12
  13 #include <linux/crypto.h>
  14 #include <crypto/sha.h>
  15
  16 /* must be big enough for the largest SHA variant */
  17 #define SHA_MAX_STATE_SIZE      (SHA512_DIGEST_SIZE / 4)
  18 #define SHA_MAX_BLOCK_SIZE      SHA512_BLOCK_SIZE
  19
  20 struct s390_sha_ctx {
  21         u64 count;              /* message length in bytes */
  22         u32 state[SHA_MAX_STATE_SIZE];
  23         u8 buf[2 * SHA_MAX_BLOCK_SIZE];
  24         int func;               /* KIMD function to use */
  25 };
  26
  27 struct shash_desc;
  28
  29 int s390_sha_update(struct shash_desc *desc, const u8 *data, unsigned int len);
  30 int s390_sha_final(struct shash_desc *desc, u8 *out);
  31
  32 #endif