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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 | // SPDX-License-Identifier: GPL-2.0+ /* * Cryptographic API. * * s390 implementation of the SHA512 and SHA38 Secure Hash Algorithm. * * Copyright IBM Corp. 2007 * Author(s): Jan Glauber (jang@de.ibm.com) */ #include <crypto/internal/hash.h> #include <crypto/sha2.h> #include <linux/errno.h> #include <linux/init.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/cpufeature.h> #include <asm/cpacf.h> #include "sha.h" static int sha512_init(struct shash_desc *desc) { struct s390_sha_ctx *ctx = shash_desc_ctx(desc); *(__u64 *)&ctx->state[0] = SHA512_H0; *(__u64 *)&ctx->state[2] = SHA512_H1; *(__u64 *)&ctx->state[4] = SHA512_H2; *(__u64 *)&ctx->state[6] = SHA512_H3; *(__u64 *)&ctx->state[8] = SHA512_H4; *(__u64 *)&ctx->state[10] = SHA512_H5; *(__u64 *)&ctx->state[12] = SHA512_H6; *(__u64 *)&ctx->state[14] = SHA512_H7; ctx->count = 0; ctx->func = CPACF_KIMD_SHA_512; return 0; } static int sha512_export(struct shash_desc *desc, void *out) { struct s390_sha_ctx *sctx = shash_desc_ctx(desc); struct sha512_state *octx = out; octx->count[0] = sctx->count; octx->count[1] = 0; memcpy(octx->state, sctx->state, sizeof(octx->state)); memcpy(octx->buf, sctx->buf, sizeof(octx->buf)); return 0; } static int sha512_import(struct shash_desc *desc, const void *in) { struct s390_sha_ctx *sctx = shash_desc_ctx(desc); const struct sha512_state *ictx = in; if (unlikely(ictx->count[1])) return -ERANGE; sctx->count = ictx->count[0]; memcpy(sctx->state, ictx->state, sizeof(ictx->state)); memcpy(sctx->buf, ictx->buf, sizeof(ictx->buf)); sctx->func = CPACF_KIMD_SHA_512; return 0; } static struct shash_alg sha512_alg = { .digestsize = SHA512_DIGEST_SIZE, .init = sha512_init, .update = s390_sha_update, .final = s390_sha_final, .export = sha512_export, .import = sha512_import, .descsize = sizeof(struct s390_sha_ctx), .statesize = sizeof(struct sha512_state), .base = { .cra_name = "sha512", .cra_driver_name= "sha512-s390", .cra_priority = 300, .cra_blocksize = SHA512_BLOCK_SIZE, .cra_module = THIS_MODULE, } }; MODULE_ALIAS_CRYPTO("sha512"); static int sha384_init(struct shash_desc *desc) { struct s390_sha_ctx *ctx = shash_desc_ctx(desc); *(__u64 *)&ctx->state[0] = SHA384_H0; *(__u64 *)&ctx->state[2] = SHA384_H1; *(__u64 *)&ctx->state[4] = SHA384_H2; *(__u64 *)&ctx->state[6] = SHA384_H3; *(__u64 *)&ctx->state[8] = SHA384_H4; *(__u64 *)&ctx->state[10] = SHA384_H5; *(__u64 *)&ctx->state[12] = SHA384_H6; *(__u64 *)&ctx->state[14] = SHA384_H7; ctx->count = 0; ctx->func = CPACF_KIMD_SHA_512; return 0; } static struct shash_alg sha384_alg = { .digestsize = SHA384_DIGEST_SIZE, .init = sha384_init, .update = s390_sha_update, .final = s390_sha_final, .export = sha512_export, .import = sha512_import, .descsize = sizeof(struct s390_sha_ctx), .statesize = sizeof(struct sha512_state), .base = { .cra_name = "sha384", .cra_driver_name= "sha384-s390", .cra_priority = 300, .cra_blocksize = SHA384_BLOCK_SIZE, .cra_ctxsize = sizeof(struct s390_sha_ctx), .cra_module = THIS_MODULE, } }; MODULE_ALIAS_CRYPTO("sha384"); static int __init init(void) { int ret; if (!cpacf_query_func(CPACF_KIMD, CPACF_KIMD_SHA_512)) return -ENODEV; if ((ret = crypto_register_shash(&sha512_alg)) < 0) goto out; if ((ret = crypto_register_shash(&sha384_alg)) < 0) crypto_unregister_shash(&sha512_alg); out: return ret; } static void __exit fini(void) { crypto_unregister_shash(&sha512_alg); crypto_unregister_shash(&sha384_alg); } module_cpu_feature_match(S390_CPU_FEATURE_MSA, init); module_exit(fini); MODULE_LICENSE("GPL"); MODULE_DESCRIPTION("SHA512 and SHA-384 Secure Hash Algorithm"); |