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Put a flag in the public_key struct to indicate if the structure is holding a private key. The private key must be held ASN.1 encoded in the format specified in RFC 3447 A.1.2. This is the form required by crypto/rsa.c. The software encryption subtype's verification and query functions then need to select the appropriate crypto function to set the key. Signed-off-by: David Howells <dhowells@redhat.com> Tested-by: Marcel Holtmann <marcel@holtmann.org> Reviewed-by: Marcel Holtmann <marcel@holtmann.org> Reviewed-by: Denis Kenzior <denkenz@gmail.com> Tested-by: Denis Kenzior <denkenz@gmail.com> Signed-off-by: James Morris <james.morris@microsoft.com>
85 lines
2.5 KiB
C
85 lines
2.5 KiB
C
/* Asymmetric public-key algorithm definitions
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*
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* See Documentation/crypto/asymmetric-keys.txt
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*
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* Copyright (C) 2012 Red Hat, Inc. All Rights Reserved.
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* Written by David Howells (dhowells@redhat.com)
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public Licence
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* as published by the Free Software Foundation; either version
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* 2 of the Licence, or (at your option) any later version.
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*/
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#ifndef _LINUX_PUBLIC_KEY_H
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#define _LINUX_PUBLIC_KEY_H
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#include <linux/keyctl.h>
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/*
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* Cryptographic data for the public-key subtype of the asymmetric key type.
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*
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* Note that this may include private part of the key as well as the public
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* part.
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*/
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struct public_key {
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void *key;
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u32 keylen;
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bool key_is_private;
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const char *id_type;
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const char *pkey_algo;
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};
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extern void public_key_free(struct public_key *key);
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/*
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* Public key cryptography signature data
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*/
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struct public_key_signature {
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struct asymmetric_key_id *auth_ids[2];
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u8 *s; /* Signature */
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u32 s_size; /* Number of bytes in signature */
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u8 *digest;
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u8 digest_size; /* Number of bytes in digest */
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const char *pkey_algo;
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const char *hash_algo;
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const char *encoding;
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};
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extern void public_key_signature_free(struct public_key_signature *sig);
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extern struct asymmetric_key_subtype public_key_subtype;
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struct key;
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struct key_type;
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union key_payload;
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extern int restrict_link_by_signature(struct key *dest_keyring,
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const struct key_type *type,
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const union key_payload *payload,
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struct key *trust_keyring);
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extern int restrict_link_by_key_or_keyring(struct key *dest_keyring,
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const struct key_type *type,
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const union key_payload *payload,
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struct key *trusted);
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extern int restrict_link_by_key_or_keyring_chain(struct key *trust_keyring,
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const struct key_type *type,
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const union key_payload *payload,
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struct key *trusted);
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extern int query_asymmetric_key(const struct kernel_pkey_params *,
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struct kernel_pkey_query *);
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extern int encrypt_blob(struct kernel_pkey_params *, const void *, void *);
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extern int decrypt_blob(struct kernel_pkey_params *, const void *, void *);
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extern int create_signature(struct kernel_pkey_params *, const void *, void *);
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extern int verify_signature(const struct key *,
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const struct public_key_signature *);
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int public_key_verify_signature(const struct public_key *pkey,
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const struct public_key_signature *sig);
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#endif /* _LINUX_PUBLIC_KEY_H */
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