blob: 4ccd22deef399aa477ba9e5c958d1516ff5dc50f [file] [log] [blame]
* Cryptographic Hash operations.
* Copyright (c) 2006 Herbert Xu <>
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the Free
* Software Foundation; either version 2 of the License, or (at your option)
* any later version.
#include <linux/errno.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/seq_file.h>
#include "internal.h"
static unsigned int crypto_hash_ctxsize(struct crypto_alg *alg, u32 type,
u32 mask)
return alg->cra_ctxsize;
static int crypto_init_hash_ops(struct crypto_tfm *tfm, u32 type, u32 mask)
struct hash_tfm *crt = &tfm->crt_hash;
struct hash_alg *alg = &tfm->__crt_alg->cra_hash;
if (alg->digestsize > crypto_tfm_alg_blocksize(tfm))
return -EINVAL;
crt->init = alg->init;
crt->update = alg->update;
crt->final = alg->final;
crt->digest = alg->digest;
crt->setkey = alg->setkey;
crt->digestsize = alg->digestsize;
return 0;
static void crypto_hash_show(struct seq_file *m, struct crypto_alg *alg)
__attribute__ ((unused));
static void crypto_hash_show(struct seq_file *m, struct crypto_alg *alg)
seq_printf(m, "type : hash\n");
seq_printf(m, "blocksize : %u\n", alg->cra_blocksize);
seq_printf(m, "digestsize : %u\n", alg->cra_hash.digestsize);
const struct crypto_type crypto_hash_type = {
.ctxsize = crypto_hash_ctxsize,
.init = crypto_init_hash_ops,
.show = crypto_hash_show,
MODULE_DESCRIPTION("Generic cryptographic hash type");