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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 | /* * Cryptographic API. * * s390 implementation of the SHA256 and SHA224 Secure Hash Algorithm. * * s390 Version: * Copyright IBM Corp. 2005, 2011 * 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. * */ #include <crypto/internal/hash.h> #include <linux/init.h> #include <linux/module.h> #include <crypto/sha.h> #include "crypt_s390.h" #include "sha.h" static int sha256_init(struct shash_desc *desc) { struct s390_sha_ctx *sctx = shash_desc_ctx(desc); sctx->state[0] = SHA256_H0; sctx->state[1] = SHA256_H1; sctx->state[2] = SHA256_H2; sctx->state[3] = SHA256_H3; sctx->state[4] = SHA256_H4; sctx->state[5] = SHA256_H5; sctx->state[6] = SHA256_H6; sctx->state[7] = SHA256_H7; sctx->count = 0; sctx->func = KIMD_SHA_256; return 0; } static int sha256_export(struct shash_desc *desc, void *out) { struct s390_sha_ctx *sctx = shash_desc_ctx(desc); struct sha256_state *octx = out; octx->count = sctx->count; memcpy(octx->state, sctx->state, sizeof(octx->state)); memcpy(octx->buf, sctx->buf, sizeof(octx->buf)); return 0; } static int sha256_import(struct shash_desc *desc, const void *in) { struct s390_sha_ctx *sctx = shash_desc_ctx(desc); const struct sha256_state *ictx = in; sctx->count = ictx->count; memcpy(sctx->state, ictx->state, sizeof(ictx->state)); memcpy(sctx->buf, ictx->buf, sizeof(ictx->buf)); sctx->func = KIMD_SHA_256; return 0; } static struct shash_alg sha256_alg = { .digestsize = SHA256_DIGEST_SIZE, .init = sha256_init, .update = s390_sha_update, .final = s390_sha_final, .export = sha256_export, .import = sha256_import, .descsize = sizeof(struct s390_sha_ctx), .statesize = sizeof(struct sha256_state), .base = { .cra_name = "sha256", .cra_driver_name= "sha256-s390", .cra_priority = CRYPT_S390_PRIORITY, .cra_flags = CRYPTO_ALG_TYPE_SHASH, .cra_blocksize = SHA256_BLOCK_SIZE, .cra_module = THIS_MODULE, } }; static int sha224_init(struct shash_desc *desc) { struct s390_sha_ctx *sctx = shash_desc_ctx(desc); sctx->state[0] = SHA224_H0; sctx->state[1] = SHA224_H1; sctx->state[2] = SHA224_H2; sctx->state[3] = SHA224_H3; sctx->state[4] = SHA224_H4; sctx->state[5] = SHA224_H5; sctx->state[6] = SHA224_H6; sctx->state[7] = SHA224_H7; sctx->count = 0; sctx->func = KIMD_SHA_256; return 0; } static struct shash_alg sha224_alg = { .digestsize = SHA224_DIGEST_SIZE, .init = sha224_init, .update = s390_sha_update, .final = s390_sha_final, .export = sha256_export, .import = sha256_import, .descsize = sizeof(struct s390_sha_ctx), .statesize = sizeof(struct sha256_state), .base = { .cra_name = "sha224", .cra_driver_name= "sha224-s390", .cra_priority = CRYPT_S390_PRIORITY, .cra_flags = CRYPTO_ALG_TYPE_SHASH, .cra_blocksize = SHA224_BLOCK_SIZE, .cra_module = THIS_MODULE, } }; static int __init sha256_s390_init(void) { int ret; if (!crypt_s390_func_available(KIMD_SHA_256, CRYPT_S390_MSA)) return -EOPNOTSUPP; ret = crypto_register_shash(&sha256_alg); if (ret < 0) goto out; ret = crypto_register_shash(&sha224_alg); if (ret < 0) crypto_unregister_shash(&sha256_alg); out: return ret; } static void __exit sha256_s390_fini(void) { crypto_unregister_shash(&sha224_alg); crypto_unregister_shash(&sha256_alg); } module_init(sha256_s390_init); module_exit(sha256_s390_fini); MODULE_ALIAS("sha256"); MODULE_ALIAS("sha224"); MODULE_LICENSE("GPL"); MODULE_DESCRIPTION("SHA256 and SHA224 Secure Hash Algorithm"); |