| // SPDX-License-Identifier: GPL-2.0+ |
| * Module signature checker |
| * Copyright (C) 2012 Red Hat, Inc. All Rights Reserved. |
| * Written by David Howells (dhowells@redhat.com) |
| #include <linux/printk.h> |
| #include <linux/module_signature.h> |
| #include <asm/byteorder.h> |
| * mod_check_sig - check that the given signature is sane |
| * @ms: Signature to check. |
| * @file_len: Size of the file to which @ms is appended. |
| * @name: What is being checked. Used for error messages. |
| int mod_check_sig(const struct module_signature *ms, size_t file_len, |
| if (be32_to_cpu(ms->sig_len) >= file_len - sizeof(*ms)) |
| if (ms->id_type != PKEY_ID_PKCS7) { |
| pr_err("%s: not signed with expected PKCS#7 message\n", |
| pr_err("%s: PKCS#7 signature info has unexpected non-zero params\n", |