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 33