Loading...
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 | // SPDX-License-Identifier: GPL-2.0+ /* * Cryptographic API. * * s390 implementation of the SHA1 Secure Hash Algorithm. * * Derived from cryptoapi implementation, adapted for in-place * scatterlist interface. Originally based on the public domain * implementation written by Steve Reid. * * s390 Version: * Copyright IBM Corp. 2003, 2007 * Author(s): Thomas Spatzier * Jan Glauber (jan.glauber@de.ibm.com) * * Derived from "crypto/sha1_generic.c" * Copyright (c) Alan Smithee. * Copyright (c) Andrew McDonald <andrew@mcdonald.org.uk> * Copyright (c) Jean-Francois Dive <jef@linuxbe.org> */ #include <crypto/internal/hash.h> #include <linux/init.h> #include <linux/module.h> #include <linux/cpufeature.h> #include <crypto/sha.h> #include <asm/cpacf.h> #include "sha.h" static int sha1_init(struct shash_desc *desc) { struct s390_sha_ctx *sctx = shash_desc_ctx(desc); sctx->state[0] = SHA1_H0; sctx->state[1] = SHA1_H1; sctx->state[2] = SHA1_H2; sctx->state[3] = SHA1_H3; sctx->state[4] = SHA1_H4; sctx->count = 0; sctx->func = CPACF_KIMD_SHA_1; return 0; } static int sha1_export(struct shash_desc *desc, void *out) { struct s390_sha_ctx *sctx = shash_desc_ctx(desc); struct sha1_state *octx = out; octx->count = sctx->count; memcpy(octx->state, sctx->state, sizeof(octx->state)); memcpy(octx->buffer, sctx->buf, sizeof(octx->buffer)); return 0; } static int sha1_import(struct shash_desc *desc, const void *in) { struct s390_sha_ctx *sctx = shash_desc_ctx(desc); const struct sha1_state *ictx = in; sctx->count = ictx->count; memcpy(sctx->state, ictx->state, sizeof(ictx->state)); memcpy(sctx->buf, ictx->buffer, sizeof(ictx->buffer)); sctx->func = CPACF_KIMD_SHA_1; return 0; } static struct shash_alg alg = { .digestsize = SHA1_DIGEST_SIZE, .init = sha1_init, .update = s390_sha_update, .final = s390_sha_final, .export = sha1_export, .import = sha1_import, .descsize = sizeof(struct s390_sha_ctx), .statesize = sizeof(struct sha1_state), .base = { .cra_name = "sha1", .cra_driver_name= "sha1-s390", .cra_priority = 300, .cra_blocksize = SHA1_BLOCK_SIZE, .cra_module = THIS_MODULE, } }; static int __init sha1_s390_init(void) { if (!cpacf_query_func(CPACF_KIMD, CPACF_KIMD_SHA_1)) return -EOPNOTSUPP; return crypto_register_shash(&alg); } static void __exit sha1_s390_fini(void) { crypto_unregister_shash(&alg); } module_cpu_feature_match(MSA, sha1_s390_init); module_exit(sha1_s390_fini); MODULE_ALIAS_CRYPTO("sha1"); MODULE_LICENSE("GPL"); MODULE_DESCRIPTION("SHA1 Secure Hash Algorithm"); |