mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-21 02:58:57 +07:00
db6c43bd21
This patch converts the module verification code to the new akcipher API. Signed-off-by: Tadeusz Struk <tadeusz.struk@intel.com> Acked-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David Howells <dhowells@redhat.com>
111 lines
2.7 KiB
C
111 lines
2.7 KiB
C
/* In-software asymmetric public-key crypto subtype
|
|
*
|
|
* See Documentation/crypto/asymmetric-keys.txt
|
|
*
|
|
* Copyright (C) 2012 Red Hat, Inc. All Rights Reserved.
|
|
* Written by David Howells (dhowells@redhat.com)
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public Licence
|
|
* as published by the Free Software Foundation; either version
|
|
* 2 of the Licence, or (at your option) any later version.
|
|
*/
|
|
|
|
#define pr_fmt(fmt) "PKEY: "fmt
|
|
#include <linux/module.h>
|
|
#include <linux/export.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/seq_file.h>
|
|
#include <keys/asymmetric-subtype.h>
|
|
#include <crypto/public_key.h>
|
|
|
|
MODULE_LICENSE("GPL");
|
|
|
|
const char *const pkey_algo_name[PKEY_ALGO__LAST] = {
|
|
[PKEY_ALGO_DSA] = "dsa",
|
|
[PKEY_ALGO_RSA] = "rsa",
|
|
};
|
|
EXPORT_SYMBOL_GPL(pkey_algo_name);
|
|
|
|
const char *const pkey_id_type_name[PKEY_ID_TYPE__LAST] = {
|
|
[PKEY_ID_PGP] = "PGP",
|
|
[PKEY_ID_X509] = "X509",
|
|
[PKEY_ID_PKCS7] = "PKCS#7",
|
|
};
|
|
EXPORT_SYMBOL_GPL(pkey_id_type_name);
|
|
|
|
static int (*alg_verify[PKEY_ALGO__LAST])(const struct public_key *pkey,
|
|
const struct public_key_signature *sig) = {
|
|
NULL,
|
|
rsa_verify_signature
|
|
};
|
|
|
|
/*
|
|
* Provide a part of a description of the key for /proc/keys.
|
|
*/
|
|
static void public_key_describe(const struct key *asymmetric_key,
|
|
struct seq_file *m)
|
|
{
|
|
struct public_key *key = asymmetric_key->payload.data[asym_crypto];
|
|
|
|
if (key)
|
|
seq_printf(m, "%s.%s",
|
|
pkey_id_type_name[key->id_type],
|
|
pkey_algo_name[key->pkey_algo]);
|
|
}
|
|
|
|
/*
|
|
* Destroy a public key algorithm key.
|
|
*/
|
|
void public_key_destroy(void *payload)
|
|
{
|
|
struct public_key *key = payload;
|
|
|
|
if (key)
|
|
kfree(key->key);
|
|
kfree(key);
|
|
}
|
|
EXPORT_SYMBOL_GPL(public_key_destroy);
|
|
|
|
/*
|
|
* Verify a signature using a public key.
|
|
*/
|
|
int public_key_verify_signature(const struct public_key *pkey,
|
|
const struct public_key_signature *sig)
|
|
{
|
|
BUG_ON(!pkey);
|
|
BUG_ON(!sig);
|
|
BUG_ON(!sig->digest);
|
|
BUG_ON(!sig->s);
|
|
|
|
if (pkey->pkey_algo >= PKEY_ALGO__LAST)
|
|
return -ENOPKG;
|
|
|
|
if (!alg_verify[pkey->pkey_algo])
|
|
return -ENOPKG;
|
|
|
|
return alg_verify[pkey->pkey_algo](pkey, sig);
|
|
}
|
|
EXPORT_SYMBOL_GPL(public_key_verify_signature);
|
|
|
|
static int public_key_verify_signature_2(const struct key *key,
|
|
const struct public_key_signature *sig)
|
|
{
|
|
const struct public_key *pk = key->payload.data[asym_crypto];
|
|
return public_key_verify_signature(pk, sig);
|
|
}
|
|
|
|
/*
|
|
* Public key algorithm asymmetric key subtype
|
|
*/
|
|
struct asymmetric_key_subtype public_key_subtype = {
|
|
.owner = THIS_MODULE,
|
|
.name = "public_key",
|
|
.name_len = sizeof("public_key") - 1,
|
|
.describe = public_key_describe,
|
|
.destroy = public_key_destroy,
|
|
.verify_signature = public_key_verify_signature_2,
|
|
};
|
|
EXPORT_SYMBOL_GPL(public_key_subtype);
|