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- /* SPDX-License-Identifier: GPL-2.0+ */
- /*
- * Module signature handling.
- *
- * Copyright (C) 2012 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells ([email protected])
- */
- #ifndef _LINUX_MODULE_SIGNATURE_H
- #define _LINUX_MODULE_SIGNATURE_H
- #include <linux/types.h>
- /* In stripped ARM and x86-64 modules, ~ is surprisingly rare. */
- #define MODULE_SIG_STRING "~Module signature appended~\n"
- enum pkey_id_type {
- PKEY_ID_PGP, /* OpenPGP generated key ID */
- PKEY_ID_X509, /* X.509 arbitrary subjectKeyIdentifier */
- PKEY_ID_PKCS7, /* 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 [PKEY_ID_PKCS7] */
- 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 */
- };
- int mod_check_sig(const struct module_signature *ms, size_t file_len,
- const char *name);
- #endif /* _LINUX_MODULE_SIGNATURE_H */
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