9abc4e66eb
Rename the arrays of public key parameters (public key algorithm names, hash algorithm names and ID type names) so that the array name ends in "_name". Signed-off-by: David Howells <dhowells@redhat.com> Reviewed-by: Kees Cook <keescook@chromium.org> Reviewed-by: Josh Boyer <jwboyer@redhat.com>
109 lines
2.7 KiB
C
109 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 "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_hash_algo_name[PKEY_HASH__LAST] = {
|
|
[PKEY_HASH_MD4] = "md4",
|
|
[PKEY_HASH_MD5] = "md5",
|
|
[PKEY_HASH_SHA1] = "sha1",
|
|
[PKEY_HASH_RIPE_MD_160] = "rmd160",
|
|
[PKEY_HASH_SHA256] = "sha256",
|
|
[PKEY_HASH_SHA384] = "sha384",
|
|
[PKEY_HASH_SHA512] = "sha512",
|
|
[PKEY_HASH_SHA224] = "sha224",
|
|
};
|
|
EXPORT_SYMBOL_GPL(pkey_hash_algo_name);
|
|
|
|
const char *const pkey_id_type_name[PKEY_ID_TYPE__LAST] = {
|
|
[PKEY_ID_PGP] = "PGP",
|
|
[PKEY_ID_X509] = "X509",
|
|
};
|
|
EXPORT_SYMBOL_GPL(pkey_id_type_name);
|
|
|
|
/*
|
|
* 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;
|
|
|
|
if (key)
|
|
seq_printf(m, "%s.%s",
|
|
pkey_id_type_name[key->id_type], key->algo->name);
|
|
}
|
|
|
|
/*
|
|
* Destroy a public key algorithm key.
|
|
*/
|
|
void public_key_destroy(void *payload)
|
|
{
|
|
struct public_key *key = payload;
|
|
int i;
|
|
|
|
if (key) {
|
|
for (i = 0; i < ARRAY_SIZE(key->mpi); i++)
|
|
mpi_free(key->mpi[i]);
|
|
kfree(key);
|
|
}
|
|
}
|
|
EXPORT_SYMBOL_GPL(public_key_destroy);
|
|
|
|
/*
|
|
* Verify a signature using a public key.
|
|
*/
|
|
static int public_key_verify_signature(const struct key *key,
|
|
const struct public_key_signature *sig)
|
|
{
|
|
const struct public_key *pk = key->payload.data;
|
|
|
|
if (!pk->algo->verify_signature)
|
|
return -ENOTSUPP;
|
|
|
|
if (sig->nr_mpi != pk->algo->n_sig_mpi) {
|
|
pr_debug("Signature has %u MPI not %u\n",
|
|
sig->nr_mpi, pk->algo->n_sig_mpi);
|
|
return -EINVAL;
|
|
}
|
|
|
|
return pk->algo->verify_signature(pk, sig);
|
|
}
|
|
|
|
/*
|
|
* Public key algorithm asymmetric key subtype
|
|
*/
|
|
struct asymmetric_key_subtype public_key_subtype = {
|
|
.owner = THIS_MODULE,
|
|
.name = "public_key",
|
|
.describe = public_key_describe,
|
|
.destroy = public_key_destroy,
|
|
.verify_signature = public_key_verify_signature,
|
|
};
|
|
EXPORT_SYMBOL_GPL(public_key_subtype);
|