Contributors: 6
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| David Howells |
116 |
68.64% |
7 |
58.33% |
| Thiago Jung Bauermann |
31 |
18.34% |
1 |
8.33% |
| Jessica Yu |
11 |
6.51% |
1 |
8.33% |
| Rusty Russell |
8 |
4.73% |
1 |
8.33% |
| Thomas Gleixner |
2 |
1.18% |
1 |
8.33% |
| Ke Wu |
1 |
0.59% |
1 |
8.33% |
| Total |
169 |
|
12 |
|
// SPDX-License-Identifier: GPL-2.0-or-later
/* Module signature checker
*
* Copyright (C) 2012 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*/
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/module.h>
#include <linux/module_signature.h>
#include <linux/string.h>
#include <linux/verification.h>
#include <crypto/public_key.h>
#include "module-internal.h"
/*
* Verify the signature on a module.
*/
int mod_verify_sig(const void *mod, struct load_info *info)
{
struct module_signature ms;
size_t sig_len, modlen = info->len;
int ret;
pr_devel("==>%s(,%zu)\n", __func__, modlen);
if (modlen <= sizeof(ms))
return -EBADMSG;
memcpy(&ms, mod + (modlen - sizeof(ms)), sizeof(ms));
ret = mod_check_sig(&ms, modlen, info->name);
if (ret)
return ret;
sig_len = be32_to_cpu(ms.sig_len);
modlen -= sig_len + sizeof(ms);
info->len = modlen;
return verify_pkcs7_signature(mod, modlen, mod + modlen, sig_len,
VERIFY_USE_SECONDARY_KEYRING,
VERIFYING_MODULE_SIGNATURE,
NULL, NULL);
}