/*
   * Cryptographic API.
   *
   * s390 generic implementation of the SHA Secure Hash Algorithms.
   *
   * Copyright IBM Corp. 2007
   * Author(s): Jan Glauber (jang@de.ibm.com)
   *
   * This program is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License as published by the Free
   * Software Foundation; either version 2 of the License, or (at your option)
   * any later version.
   *
   */
  #ifndef _CRYPTO_ARCH_S390_SHA_H
  #define _CRYPTO_ARCH_S390_SHA_H
  
  #include <linux/crypto.h>
  #include <crypto/sha.h>
  
  /* must be big enough for the largest SHA variant */
  #define SHA_MAX_STATE_SIZE	16
  #define SHA_MAX_BLOCK_SIZE      SHA512_BLOCK_SIZE
  
  struct s390_sha_ctx {
  	u64 count;              /* message length in bytes */
  	u32 state[SHA_MAX_STATE_SIZE];
  	u8 buf[2 * SHA_MAX_BLOCK_SIZE];
  	int func;		/* KIMD function to use */
  };
  
  struct shash_desc;
  
  int s390_sha_update(struct shash_desc *desc, const u8 *data, unsigned int len);
  int s390_sha_final(struct shash_desc *desc, u8 *out);
  
  #endif