4 * Skein256 Hash Algorithm.
6 * Derived from cryptoapi implementation, adapted for in-place
7 * scatterlist interface.
9 * Copyright (c) Eric Rost <eric.rost@mybabylon.net>
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)
17 #include <linux/types.h>
18 #include <linux/init.h>
19 #include <linux/module.h>
20 #include <crypto/internal/hash.h>
21 #include "skein_base.h"
24 static int skein256_init(struct shash_desc *desc)
26 return skein_256_init((struct skein_256_ctx *) shash_desc_ctx(desc),
27 SKEIN256_DIGEST_BIT_SIZE);
30 static int skein256_update(struct shash_desc *desc, const u8 *data,
33 return skein_256_update((struct skein_256_ctx *)shash_desc_ctx(desc),
37 static int skein256_final(struct shash_desc *desc, u8 *out)
39 return skein_256_final((struct skein_256_ctx *)shash_desc_ctx(desc),
43 static int skein256_export(struct shash_desc *desc, void *out)
45 struct skein_256_ctx *sctx = shash_desc_ctx(desc);
47 memcpy(out, sctx, sizeof(*sctx));
51 static int skein256_import(struct shash_desc *desc, const void *in)
53 struct skein_256_ctx *sctx = shash_desc_ctx(desc);
55 memcpy(sctx, in, sizeof(*sctx));
59 static int skein512_init(struct shash_desc *desc)
61 return skein_512_init((struct skein_512_ctx *)shash_desc_ctx(desc),
62 SKEIN512_DIGEST_BIT_SIZE);
65 static int skein512_update(struct shash_desc *desc, const u8 *data,
68 return skein_512_update((struct skein_512_ctx *)shash_desc_ctx(desc),
72 static int skein512_final(struct shash_desc *desc, u8 *out)
74 return skein_512_final((struct skein_512_ctx *)shash_desc_ctx(desc),
78 static int skein512_export(struct shash_desc *desc, void *out)
80 struct skein_512_ctx *sctx = shash_desc_ctx(desc);
82 memcpy(out, sctx, sizeof(*sctx));
86 static int skein512_import(struct shash_desc *desc, const void *in)
88 struct skein_512_ctx *sctx = shash_desc_ctx(desc);
90 memcpy(sctx, in, sizeof(*sctx));
94 static int skein1024_init(struct shash_desc *desc)
96 return skein_1024_init((struct skein_1024_ctx *)shash_desc_ctx(desc),
97 SKEIN1024_DIGEST_BIT_SIZE);
100 static int skein1024_update(struct shash_desc *desc, const u8 *data,
103 return skein_1024_update((struct skein_1024_ctx *)shash_desc_ctx(desc),
107 static int skein1024_final(struct shash_desc *desc, u8 *out)
109 return skein_1024_final((struct skein_1024_ctx *)shash_desc_ctx(desc),
113 static int skein1024_export(struct shash_desc *desc, void *out)
115 struct skein_1024_ctx *sctx = shash_desc_ctx(desc);
117 memcpy(out, sctx, sizeof(*sctx));
121 static int skein1024_import(struct shash_desc *desc, const void *in)
123 struct skein_1024_ctx *sctx = shash_desc_ctx(desc);
125 memcpy(sctx, in, sizeof(*sctx));
129 static struct shash_alg alg256 = {
130 .digestsize = (SKEIN256_DIGEST_BIT_SIZE / 8),
131 .init = skein256_init,
132 .update = skein256_update,
133 .final = skein256_final,
134 .export = skein256_export,
135 .import = skein256_import,
136 .descsize = sizeof(struct skein_256_ctx),
137 .statesize = sizeof(struct skein_256_ctx),
139 .cra_name = "skein256",
140 .cra_driver_name = "skein",
141 .cra_flags = CRYPTO_ALG_TYPE_SHASH,
142 .cra_blocksize = SKEIN_256_BLOCK_BYTES,
143 .cra_module = THIS_MODULE,
147 static struct shash_alg alg512 = {
148 .digestsize = (SKEIN512_DIGEST_BIT_SIZE / 8),
149 .init = skein512_init,
150 .update = skein512_update,
151 .final = skein512_final,
152 .export = skein512_export,
153 .import = skein512_import,
154 .descsize = sizeof(struct skein_512_ctx),
155 .statesize = sizeof(struct skein_512_ctx),
157 .cra_name = "skein512",
158 .cra_driver_name = "skein",
159 .cra_flags = CRYPTO_ALG_TYPE_SHASH,
160 .cra_blocksize = SKEIN_512_BLOCK_BYTES,
161 .cra_module = THIS_MODULE,
165 static struct shash_alg alg1024 = {
166 .digestsize = (SKEIN1024_DIGEST_BIT_SIZE / 8),
167 .init = skein1024_init,
168 .update = skein1024_update,
169 .final = skein1024_final,
170 .export = skein1024_export,
171 .import = skein1024_import,
172 .descsize = sizeof(struct skein_1024_ctx),
173 .statesize = sizeof(struct skein_1024_ctx),
175 .cra_name = "skein1024",
176 .cra_driver_name = "skein",
177 .cra_flags = CRYPTO_ALG_TYPE_SHASH,
178 .cra_blocksize = SKEIN_1024_BLOCK_BYTES,
179 .cra_module = THIS_MODULE,
183 static int __init skein_generic_init(void)
185 if (crypto_register_shash(&alg256))
187 if (crypto_register_shash(&alg512))
189 if (crypto_register_shash(&alg1024))
195 crypto_unregister_shash(&alg512);
197 crypto_unregister_shash(&alg256);
202 static void __exit skein_generic_fini(void)
204 crypto_unregister_shash(&alg256);
205 crypto_unregister_shash(&alg512);
206 crypto_unregister_shash(&alg1024);
209 module_init(skein_generic_init);
210 module_exit(skein_generic_fini);
212 MODULE_LICENSE("GPL");
213 MODULE_DESCRIPTION("Skein Hash Algorithm");
215 MODULE_ALIAS("skein");