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/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
/*
* Module signature handling.
*
* Copyright (C) 2012 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*/
#ifndef _UAPI_LINUX_MODULE_SIGNATURE_H
#define _UAPI_LINUX_MODULE_SIGNATURE_H
#include <linux/types.h>
/* In stripped ARM and x86-64 modules, ~ is surprisingly rare. */
#define MODULE_SIGNATURE_MARKER "~Module signature appended~\n"
enum module_signature_type {
MODULE_SIGNATURE_TYPE_PKCS7 = 2, /* Signature in PKCS#7 message */
};
/*
* Module signature information block.
*
* The constituents of the signature section are, in order:
*
* - Signer's name
* - Key identifier
* - Signature data
* - Information block
*/
struct module_signature {
__u8 algo; /* Public-key crypto algorithm [0] */
__u8 hash; /* Digest algorithm [0] */
__u8 id_type; /* Key identifier type [enum module_signature_type] */
__u8 signer_len; /* Length of signer's name [0] */
__u8 key_id_len; /* Length of key identifier [0] */
__u8 __pad[3];
__be32 sig_len; /* Length of signature data */
};
#endif /* _UAPI_LINUX_MODULE_SIGNATURE_H */
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