mirror of
https://github.com/koverstreet/bcachefs-tools.git
synced 2025-02-03 00:00:07 +03:00
73 lines
1.8 KiB
C
73 lines
1.8 KiB
C
/*
|
|
* Synchronous Cryptographic Hash operations.
|
|
*
|
|
* Copyright (c) 2008 Herbert Xu <herbert@gondor.apana.org.au>
|
|
*
|
|
* 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 <crypto/internal/hash.h>
|
|
#include <linux/err.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/printk.h>
|
|
#include <linux/slab.h>
|
|
|
|
#include "internal.h"
|
|
|
|
static int shash_finup(struct shash_desc *desc, const u8 *data,
|
|
unsigned len, u8 *out)
|
|
{
|
|
return crypto_shash_update(desc, data, len) ?:
|
|
crypto_shash_final(desc, out);
|
|
}
|
|
|
|
static int shash_digest(struct shash_desc *desc, const u8 *data,
|
|
unsigned len, u8 *out)
|
|
{
|
|
return crypto_shash_init(desc) ?:
|
|
crypto_shash_finup(desc, data, len, out);
|
|
}
|
|
|
|
static int crypto_shash_init_tfm(struct crypto_tfm *tfm)
|
|
{
|
|
struct crypto_shash *hash = __crypto_shash_cast(tfm);
|
|
|
|
hash->descsize = crypto_shash_alg(hash)->descsize;
|
|
return 0;
|
|
}
|
|
|
|
static const struct crypto_type crypto_shash_type = {
|
|
.extsize = crypto_alg_extsize,
|
|
.init_tfm = crypto_shash_init_tfm,
|
|
.maskclear = ~CRYPTO_ALG_TYPE_MASK,
|
|
.maskset = CRYPTO_ALG_TYPE_MASK,
|
|
.type = CRYPTO_ALG_TYPE_SHASH,
|
|
.tfmsize = offsetof(struct crypto_shash, base),
|
|
};
|
|
|
|
struct crypto_shash *crypto_alloc_shash(const char *alg_name,
|
|
u32 type, u32 mask)
|
|
{
|
|
return crypto_alloc_tfm(alg_name, &crypto_shash_type, type, mask);
|
|
}
|
|
|
|
int crypto_register_shash(struct shash_alg *alg)
|
|
{
|
|
struct crypto_alg *base = &alg->base;
|
|
|
|
base->cra_type = &crypto_shash_type;
|
|
base->cra_flags &= ~CRYPTO_ALG_TYPE_MASK;
|
|
base->cra_flags |= CRYPTO_ALG_TYPE_SHASH;
|
|
|
|
if (!alg->finup)
|
|
alg->finup = shash_finup;
|
|
if (!alg->digest)
|
|
alg->digest = shash_digest;
|
|
|
|
return crypto_register_alg(base);
|
|
}
|