Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1/*
2 * Cryptographic Hash operations.
3 *
4 * Copyright (c) 2006 Herbert Xu <herbert@gondor.apana.org.au>
5 *
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License as published by the Free
8 * Software Foundation; either version 2 of the License, or (at your option)
9 * any later version.
10 */
11
12#include <linux/errno.h>
13#include <linux/kernel.h>
14#include <linux/module.h>
15#include <linux/seq_file.h>
16
17#include "internal.h"
18
19static unsigned int crypto_hash_ctxsize(struct crypto_alg *alg)
20{
21 return alg->cra_ctxsize;
22}
23
24static int crypto_init_hash_ops(struct crypto_tfm *tfm)
25{
26 struct hash_tfm *crt = &tfm->crt_hash;
27 struct hash_alg *alg = &tfm->__crt_alg->cra_hash;
28
29 if (alg->digestsize > crypto_tfm_alg_blocksize(tfm))
30 return -EINVAL;
31
32 crt->init = alg->init;
33 crt->update = alg->update;
34 crt->final = alg->final;
35 crt->digest = alg->digest;
36 crt->setkey = alg->setkey;
37 crt->digestsize = alg->digestsize;
38
39 return 0;
40}
41
42static void crypto_hash_show(struct seq_file *m, struct crypto_alg *alg)
43 __attribute_used__;
44static void crypto_hash_show(struct seq_file *m, struct crypto_alg *alg)
45{
46 seq_printf(m, "type : hash\n");
47 seq_printf(m, "blocksize : %u\n", alg->cra_blocksize);
48 seq_printf(m, "digestsize : %u\n", alg->cra_hash.digestsize);
49}
50
51const struct crypto_type crypto_hash_type = {
52 .ctxsize = crypto_hash_ctxsize,
53 .init = crypto_init_hash_ops,
54#ifdef CONFIG_PROC_FS
55 .show = crypto_hash_show,
56#endif
57};
58EXPORT_SYMBOL_GPL(crypto_hash_type);
59
60MODULE_LICENSE("GPL");
61MODULE_DESCRIPTION("Generic cryptographic hash type");