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 <linux/init.h> 27 #include <linux/module.h> 28 #include <linux/crypto.h> 29 #include <crypto/sha.h> 30 31 #include "crypt_s390.h" 32 #include "sha.h" 33 34 static void sha1_init(struct crypto_tfm *tfm) 35 { 36 struct s390_sha_ctx *sctx = crypto_tfm_ctx(tfm); 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 47 static struct crypto_alg alg = { 48 .cra_name = "sha1", 49 .cra_driver_name= "sha1-s390", 50 .cra_priority = CRYPT_S390_PRIORITY, 51 .cra_flags = CRYPTO_ALG_TYPE_DIGEST, 52 .cra_blocksize = SHA1_BLOCK_SIZE, 53 .cra_ctxsize = sizeof(struct s390_sha_ctx), 54 .cra_module = THIS_MODULE, 55 .cra_list = LIST_HEAD_INIT(alg.cra_list), 56 .cra_u = { .digest = { 57 .dia_digestsize = SHA1_DIGEST_SIZE, 58 .dia_init = sha1_init, 59 .dia_update = s390_sha_update, 60 .dia_final = s390_sha_final } } 61 }; 62 63 static int __init sha1_s390_init(void) 64 { 65 if (!crypt_s390_func_available(KIMD_SHA_1)) 66 return -EOPNOTSUPP; 67 return crypto_register_alg(&alg); 68 } 69 70 static void __exit sha1_s390_fini(void) 71 { 72 crypto_unregister_alg(&alg); 73 } 74 75 module_init(sha1_s390_init); 76 module_exit(sha1_s390_fini); 77 78 MODULE_ALIAS("sha1"); 79 MODULE_LICENSE("GPL"); 80 MODULE_DESCRIPTION("SHA1 Secure Hash Algorithm"); 81