Eric Rost | f96d8ce | 2014-10-24 17:33:15 -0500 | [diff] [blame] | 1 | /* |
| 2 | * Cryptographic API. |
| 3 | * |
| 4 | * Skein256 Hash Algorithm. |
| 5 | * |
| 6 | * Derived from cryptoapi implementation, adapted for in-place |
| 7 | * scatterlist interface. |
| 8 | * |
| 9 | * Copyright (c) Eric Rost <eric.rost@mybabylon.net> |
| 10 | * |
| 11 | * This program is free software; you can redistribute it and/or modify it |
| 12 | * under the terms of the GNU General Public License as published by the Free |
| 13 | * Software Foundation; either version 2 of the License, or (at your option) |
| 14 | * any later version. |
| 15 | * |
| 16 | */ |
| 17 | #include <linux/types.h> |
| 18 | #include <linux/init.h> |
Eric Rost | 075c267 | 2014-10-24 17:33:41 -0500 | [diff] [blame] | 19 | #include <linux/module.h> |
Eric Rost | f96d8ce | 2014-10-24 17:33:15 -0500 | [diff] [blame] | 20 | #include <crypto/internal/hash.h> |
| 21 | #include "skein_base.h" |
| 22 | |
Eric Rost | f96d8ce | 2014-10-24 17:33:15 -0500 | [diff] [blame] | 23 | static int skein256_init(struct shash_desc *desc) |
| 24 | { |
Aybuke Ozdemir | de7be81 | 2015-10-09 16:31:38 +0300 | [diff] [blame] | 25 | return skein_256_init((struct skein_256_ctx *)shash_desc_ctx(desc), |
Eric Rost | f96d8ce | 2014-10-24 17:33:15 -0500 | [diff] [blame] | 26 | SKEIN256_DIGEST_BIT_SIZE); |
| 27 | } |
| 28 | |
Niklas Svensson | 1ef3988 | 2014-11-08 16:49:18 +0100 | [diff] [blame] | 29 | static int skein256_update(struct shash_desc *desc, const u8 *data, |
Manu Kumar | 3faa966 | 2016-04-04 20:09:12 -0700 | [diff] [blame] | 30 | unsigned int len) |
Eric Rost | f96d8ce | 2014-10-24 17:33:15 -0500 | [diff] [blame] | 31 | { |
| 32 | return skein_256_update((struct skein_256_ctx *)shash_desc_ctx(desc), |
| 33 | data, len); |
| 34 | } |
| 35 | |
| 36 | static int skein256_final(struct shash_desc *desc, u8 *out) |
| 37 | { |
| 38 | return skein_256_final((struct skein_256_ctx *)shash_desc_ctx(desc), |
| 39 | out); |
| 40 | } |
| 41 | |
| 42 | static int skein256_export(struct shash_desc *desc, void *out) |
| 43 | { |
| 44 | struct skein_256_ctx *sctx = shash_desc_ctx(desc); |
| 45 | |
| 46 | memcpy(out, sctx, sizeof(*sctx)); |
| 47 | return 0; |
| 48 | } |
| 49 | |
| 50 | static int skein256_import(struct shash_desc *desc, const void *in) |
| 51 | { |
| 52 | struct skein_256_ctx *sctx = shash_desc_ctx(desc); |
| 53 | |
| 54 | memcpy(sctx, in, sizeof(*sctx)); |
| 55 | return 0; |
| 56 | } |
| 57 | |
| 58 | static int skein512_init(struct shash_desc *desc) |
| 59 | { |
| 60 | return skein_512_init((struct skein_512_ctx *)shash_desc_ctx(desc), |
| 61 | SKEIN512_DIGEST_BIT_SIZE); |
| 62 | } |
| 63 | |
Niklas Svensson | 1ef3988 | 2014-11-08 16:49:18 +0100 | [diff] [blame] | 64 | static int skein512_update(struct shash_desc *desc, const u8 *data, |
Manu Kumar | 3faa966 | 2016-04-04 20:09:12 -0700 | [diff] [blame] | 65 | unsigned int len) |
Eric Rost | f96d8ce | 2014-10-24 17:33:15 -0500 | [diff] [blame] | 66 | { |
| 67 | return skein_512_update((struct skein_512_ctx *)shash_desc_ctx(desc), |
| 68 | data, len); |
| 69 | } |
| 70 | |
| 71 | static int skein512_final(struct shash_desc *desc, u8 *out) |
| 72 | { |
| 73 | return skein_512_final((struct skein_512_ctx *)shash_desc_ctx(desc), |
| 74 | out); |
| 75 | } |
| 76 | |
| 77 | static int skein512_export(struct shash_desc *desc, void *out) |
| 78 | { |
| 79 | struct skein_512_ctx *sctx = shash_desc_ctx(desc); |
| 80 | |
| 81 | memcpy(out, sctx, sizeof(*sctx)); |
| 82 | return 0; |
| 83 | } |
| 84 | |
| 85 | static int skein512_import(struct shash_desc *desc, const void *in) |
| 86 | { |
| 87 | struct skein_512_ctx *sctx = shash_desc_ctx(desc); |
| 88 | |
| 89 | memcpy(sctx, in, sizeof(*sctx)); |
| 90 | return 0; |
| 91 | } |
| 92 | |
| 93 | static int skein1024_init(struct shash_desc *desc) |
| 94 | { |
| 95 | return skein_1024_init((struct skein_1024_ctx *)shash_desc_ctx(desc), |
| 96 | SKEIN1024_DIGEST_BIT_SIZE); |
| 97 | } |
| 98 | |
Niklas Svensson | 1ef3988 | 2014-11-08 16:49:18 +0100 | [diff] [blame] | 99 | static int skein1024_update(struct shash_desc *desc, const u8 *data, |
Manu Kumar | 3faa966 | 2016-04-04 20:09:12 -0700 | [diff] [blame] | 100 | unsigned int len) |
Eric Rost | f96d8ce | 2014-10-24 17:33:15 -0500 | [diff] [blame] | 101 | { |
| 102 | return skein_1024_update((struct skein_1024_ctx *)shash_desc_ctx(desc), |
| 103 | data, len); |
| 104 | } |
| 105 | |
| 106 | static int skein1024_final(struct shash_desc *desc, u8 *out) |
| 107 | { |
| 108 | return skein_1024_final((struct skein_1024_ctx *)shash_desc_ctx(desc), |
| 109 | out); |
| 110 | } |
| 111 | |
| 112 | static int skein1024_export(struct shash_desc *desc, void *out) |
| 113 | { |
| 114 | struct skein_1024_ctx *sctx = shash_desc_ctx(desc); |
| 115 | |
| 116 | memcpy(out, sctx, sizeof(*sctx)); |
| 117 | return 0; |
| 118 | } |
| 119 | |
| 120 | static int skein1024_import(struct shash_desc *desc, const void *in) |
| 121 | { |
| 122 | struct skein_1024_ctx *sctx = shash_desc_ctx(desc); |
| 123 | |
| 124 | memcpy(sctx, in, sizeof(*sctx)); |
| 125 | return 0; |
| 126 | } |
| 127 | |
| 128 | static struct shash_alg alg256 = { |
| 129 | .digestsize = (SKEIN256_DIGEST_BIT_SIZE / 8), |
| 130 | .init = skein256_init, |
| 131 | .update = skein256_update, |
| 132 | .final = skein256_final, |
| 133 | .export = skein256_export, |
| 134 | .import = skein256_import, |
| 135 | .descsize = sizeof(struct skein_256_ctx), |
| 136 | .statesize = sizeof(struct skein_256_ctx), |
| 137 | .base = { |
| 138 | .cra_name = "skein256", |
| 139 | .cra_driver_name = "skein", |
| 140 | .cra_flags = CRYPTO_ALG_TYPE_SHASH, |
| 141 | .cra_blocksize = SKEIN_256_BLOCK_BYTES, |
Eric Rost | 075c267 | 2014-10-24 17:33:41 -0500 | [diff] [blame] | 142 | .cra_module = THIS_MODULE, |
Eric Rost | f96d8ce | 2014-10-24 17:33:15 -0500 | [diff] [blame] | 143 | } |
| 144 | }; |
| 145 | |
| 146 | static struct shash_alg alg512 = { |
| 147 | .digestsize = (SKEIN512_DIGEST_BIT_SIZE / 8), |
| 148 | .init = skein512_init, |
| 149 | .update = skein512_update, |
| 150 | .final = skein512_final, |
| 151 | .export = skein512_export, |
| 152 | .import = skein512_import, |
| 153 | .descsize = sizeof(struct skein_512_ctx), |
| 154 | .statesize = sizeof(struct skein_512_ctx), |
| 155 | .base = { |
| 156 | .cra_name = "skein512", |
| 157 | .cra_driver_name = "skein", |
| 158 | .cra_flags = CRYPTO_ALG_TYPE_SHASH, |
| 159 | .cra_blocksize = SKEIN_512_BLOCK_BYTES, |
Eric Rost | 075c267 | 2014-10-24 17:33:41 -0500 | [diff] [blame] | 160 | .cra_module = THIS_MODULE, |
Eric Rost | f96d8ce | 2014-10-24 17:33:15 -0500 | [diff] [blame] | 161 | } |
| 162 | }; |
| 163 | |
| 164 | static struct shash_alg alg1024 = { |
| 165 | .digestsize = (SKEIN1024_DIGEST_BIT_SIZE / 8), |
| 166 | .init = skein1024_init, |
| 167 | .update = skein1024_update, |
| 168 | .final = skein1024_final, |
| 169 | .export = skein1024_export, |
| 170 | .import = skein1024_import, |
| 171 | .descsize = sizeof(struct skein_1024_ctx), |
| 172 | .statesize = sizeof(struct skein_1024_ctx), |
| 173 | .base = { |
| 174 | .cra_name = "skein1024", |
| 175 | .cra_driver_name = "skein", |
| 176 | .cra_flags = CRYPTO_ALG_TYPE_SHASH, |
| 177 | .cra_blocksize = SKEIN_1024_BLOCK_BYTES, |
Eric Rost | 075c267 | 2014-10-24 17:33:41 -0500 | [diff] [blame] | 178 | .cra_module = THIS_MODULE, |
Eric Rost | f96d8ce | 2014-10-24 17:33:15 -0500 | [diff] [blame] | 179 | } |
| 180 | }; |
| 181 | |
| 182 | static int __init skein_generic_init(void) |
| 183 | { |
| 184 | if (crypto_register_shash(&alg256)) |
| 185 | goto out; |
| 186 | if (crypto_register_shash(&alg512)) |
| 187 | goto unreg256; |
| 188 | if (crypto_register_shash(&alg1024)) |
| 189 | goto unreg512; |
| 190 | |
| 191 | return 0; |
| 192 | |
Eric Rost | f96d8ce | 2014-10-24 17:33:15 -0500 | [diff] [blame] | 193 | unreg512: |
| 194 | crypto_unregister_shash(&alg512); |
| 195 | unreg256: |
| 196 | crypto_unregister_shash(&alg256); |
| 197 | out: |
| 198 | return -1; |
| 199 | } |
| 200 | |
Eric Rost | 075c267 | 2014-10-24 17:33:41 -0500 | [diff] [blame] | 201 | static void __exit skein_generic_fini(void) |
| 202 | { |
| 203 | crypto_unregister_shash(&alg256); |
| 204 | crypto_unregister_shash(&alg512); |
| 205 | crypto_unregister_shash(&alg1024); |
| 206 | } |
| 207 | |
| 208 | module_init(skein_generic_init); |
| 209 | module_exit(skein_generic_fini); |
| 210 | |
| 211 | MODULE_LICENSE("GPL"); |
| 212 | MODULE_DESCRIPTION("Skein Hash Algorithm"); |
| 213 | |
| 214 | MODULE_ALIAS("skein"); |