ꦫꦣꦺꦤ꧀ꦄꦤ꧀ꦠꦱꦺꦤ

PATH: usr / src / kernels / 5.14.0-611.49.2.el9_7.x86_64 / include / crypto

/* SPDX-License-Identifier: GPL-2.0-or-later */
/* Asymmetric public-key algorithm definitions
 *
 * See Documentation/crypto/asymmetric-keys.rst
 *
 * Copyright (C) 2012 Red Hat, Inc. All Rights Reserved.
 * Written by David Howells (dhowells@redhat.com)
 */

#ifndef _LINUX_PUBLIC_KEY_H
#define _LINUX_PUBLIC_KEY_H

#include <linux/keyctl.h>
#include <linux/oid_registry.h>

/*
 * Cryptographic data for the public-key subtype of the asymmetric key type.
 *
 * Note that this may include private part of the key as well as the public
 * part.
 */
struct public_key {
	void *key;
	u32 keylen;
	enum OID algo;
	void *params;
	u32 paramlen;
	bool key_is_private;
	const char *id_type;
	const char *pkey_algo;
	unsigned long key_eflags;	/* key extension flags */
#define KEY_EFLAG_CA		0	/* set if the CA basic constraints is set */
#define KEY_EFLAG_DIGITALSIG	1	/* set if the digitalSignature usage is set */
#define KEY_EFLAG_KEYCERTSIGN	2	/* set if the keyCertSign usage is set */
};

extern void public_key_free(struct public_key *key);

/*
 * Public key cryptography signature data
 */
struct public_key_signature {
	struct asymmetric_key_id *auth_ids[2];
	u8 *s;			/* Signature */
	u32 s_size;		/* Number of bytes in signature */
	u8 *digest;
	u8 digest_size;		/* Number of bytes in digest */
	const char *pkey_algo;
	const char *hash_algo;
	const char *encoding;
	const void *data;
	unsigned int data_size;
};

extern void public_key_signature_free(struct public_key_signature *sig);

extern struct asymmetric_key_subtype public_key_subtype;

struct key;
struct key_type;
union key_payload;

extern int restrict_link_by_signature(struct key *dest_keyring,
				      const struct key_type *type,
				      const union key_payload *payload,
				      struct key *trust_keyring);

extern int restrict_link_by_key_or_keyring(struct key *dest_keyring,
					   const struct key_type *type,
					   const union key_payload *payload,
					   struct key *trusted);

extern int restrict_link_by_key_or_keyring_chain(struct key *trust_keyring,
						 const struct key_type *type,
						 const union key_payload *payload,
						 struct key *trusted);

#if IS_REACHABLE(CONFIG_ASYMMETRIC_KEY_TYPE)
extern int restrict_link_by_ca(struct key *dest_keyring,
			       const struct key_type *type,
			       const union key_payload *payload,
			       struct key *trust_keyring);
int restrict_link_by_digsig(struct key *dest_keyring,
			    const struct key_type *type,
			    const union key_payload *payload,
			    struct key *trust_keyring);
#else
static inline int restrict_link_by_ca(struct key *dest_keyring,
				      const struct key_type *type,
				      const union key_payload *payload,
				      struct key *trust_keyring)
{
	return 0;
}
static inline int restrict_link_by_digsig(struct key *dest_keyring,
					  const struct key_type *type,
					  const union key_payload *payload,
					  struct key *trust_keyring)
{
	return 0;
}
#endif

extern int query_asymmetric_key(const struct kernel_pkey_params *,
				struct kernel_pkey_query *);

extern int encrypt_blob(struct kernel_pkey_params *, const void *, void *);
extern int decrypt_blob(struct kernel_pkey_params *, const void *, void *);
extern int create_signature(struct kernel_pkey_params *, const void *, void *);
extern int verify_signature(const struct key *,
			    const struct public_key_signature *);

#if IS_REACHABLE(CONFIG_ASYMMETRIC_PUBLIC_KEY_SUBTYPE)
int public_key_verify_signature(const struct public_key *pkey,
				const struct public_key_signature *sig);
#else
static inline
int public_key_verify_signature(const struct public_key *pkey,
				const struct public_key_signature *sig)
{
	return -EINVAL;
}
#endif

#endif /* _LINUX_PUBLIC_KEY_H */

[-] akcipher.h [edit]
[-] hkdf.h [edit]
[-] dh.h [edit]
[-] hash.h [edit]
[-] ctr.h [edit]
[-] blowfish.h [edit]
[-] engine.h [edit]
[-] arc4.h [edit]
[-] kpp.h [edit]
[-] blake2s.h [edit]
[-] chacha20poly1305.h [edit]
[-] ecdh.h [edit]
[-] cast_common.h [edit]
[-] gf128mul.h [edit]
[-] asym_tpm_subtype.h [edit]
[-] chacha.h [edit]
[-] cryptd.h [edit]
[-] b128ops.h [edit]
[-] md5.h [edit]
[-] streebog.h [edit]
[-] sha1.h [edit]
[-] public_key.h [edit]
[-] drbg.h [edit]
[-] sha256_base.h [edit]
[-] sha2.h [edit]
[-] sha512_base.h [edit]
[-] pkcs7.h [edit]
[-] skcipher.h [edit]
[-] sm4.h [edit]
[-] sha3.h [edit]
[-] rng.h [edit]
[-] cast6.h [edit]
[-] twofish.h [edit]
[-] scatterwalk.h [edit]
[-] blake2b.h [edit]
[-] ghash.h [edit]
[+] internal
[-] sm3.h [edit]
[-] ecc_curve.h [edit]
[-] des.h [edit]
[-] aead.h [edit]
[-] hash_info.h [edit]
[-] gcm.h [edit]
[-] cast5.h [edit]
[-] sha1_base.h [edit]
[-] xts.h [edit]
[-] hmac.h [edit]
[-] null.h [edit]
[-] curve25519.h [edit]
[-] acompress.h [edit]
[-] nhpoly1305.h [edit]
[-] sm3_base.h [edit]
[-] serpent.h [edit]
[-] algapi.h [edit]
[-] padlock.h [edit]
[-] pcrypt.h [edit]
[+] ..
[-] poly1305.h [edit]
[-] aes.h [edit]
[-] if_alg.h [edit]
[-] authenc.h [edit]
[-] sm2.h [edit]