1 /* 2 * Cryptographic API. 3 * 4 * s390 implementation of the SHA1 Secure Hash Algorithm. 5 * 6 * Derived from cryptoapi implementation, adapted for in-place 7 * scatterlist interface. Originally based on the public domain 8 * implementation written by Steve Reid. 9 * 10 * s390 Version: 11 * Copyright IBM Corp. 2003,2007 12 * Author(s): Thomas Spatzier 13 * Jan Glauber (jan.glauber@de.ibm.com) 14 * 15 * Derived from "crypto/sha1_generic.c" 16 * Copyright (c) Alan Smithee. 17 * Copyright (c) Andrew McDonald <andrew@mcdonald.org.uk> 18 * Copyright (c) Jean-Francois Dive <jef@linuxbe.org> 19 * 20 * This program is free software; you can redistribute it and/or modify it 21 * under the terms of the GNU General Public License as published by the Free 22 * Software Foundation; either version 2 of the License, or (at your option) 23 * any later version. 24 * 25 */ 26 #include <crypto/internal/hash.h> 27 #include <linux/init.h> 28 #include <linux/module.h> 29 #include <crypto/sha.h> 30 31 #include "crypt_s390.h" 32 #include "sha.h" 33 34 static int sha1_init(struct shash_desc *desc) 35 { 36 struct s390_sha_ctx *sctx = shash_desc_ctx(desc); 37 38 sctx->state[0] = SHA1_H0; 39 sctx->state[1] = SHA1_H1; 40 sctx->state[2] = SHA1_H2; 41 sctx->state[3] = SHA1_H3; 42 sctx->state[4] = SHA1_H4; 43 sctx->count = 0; 44 sctx->func = KIMD_SHA_1; 45 46 return 0; 47 } 48 49 static struct shash_alg alg = { 50 .digestsize = SHA1_DIGEST_SIZE, 51 .init = sha1_init, 52 .update = s390_sha_update, 53 .final = s390_sha_final, 54 .descsize = sizeof(struct s390_sha_ctx), 55 .base = { 56 .cra_name = "sha1", 57 .cra_driver_name= "sha1-s390", 58 .cra_priority = CRYPT_S390_PRIORITY, 59 .cra_flags = CRYPTO_ALG_TYPE_SHASH, 60 .cra_blocksize = SHA1_BLOCK_SIZE, 61 .cra_module = THIS_MODULE, 62 } 63 }; 64 65 static int __init sha1_s390_init(void) 66 { 67 if (!crypt_s390_func_available(KIMD_SHA_1)) 68 return -EOPNOTSUPP; 69 return crypto_register_shash(&alg); 70 } 71 72 static void __exit sha1_s390_fini(void) 73 { 74 crypto_unregister_shash(&alg); 75 } 76 77 module_init(sha1_s390_init); 78 module_exit(sha1_s390_fini); 79 80 MODULE_ALIAS("sha1"); 81 MODULE_LICENSE("GPL"); 82 MODULE_DESCRIPTION("SHA1 Secure Hash Algorithm"); 83