asymmetric-subtype.h

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/* Asymmetric public-key cryptography key subtype
 *
 * See Documentation/security/asymmetric-keys.txt
 *
 * Copyright (C) 2012 Red Hat, Inc. All Rights Reserved.
 * Written by David Howells ([email protected])
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public Licence
 * as published by the Free Software Foundation; either version
 * 2 of the Licence, or (at your option) any later version.
 */

#ifndef _KEYS_ASYMMETRIC_SUBTYPE_H
#define _KEYS_ASYMMETRIC_SUBTYPE_H

#include <linux/seq_file.h>
#include <keys/asymmetric-type.h>

struct public_key_signature;

/*
 * Keys of this type declare a subtype that indicates the handlers and
 * capabilities.
 */
struct asymmetric_key_subtype {
    struct module       *owner;
    const char      *name;
    unsigned short      name_len;   /* length of name */

    /* Describe a key of this subtype for /proc/keys */
    void (*describe)(const struct key *key, struct seq_file *m);

    /* Destroy a key of this subtype */
    void (*destroy)(void *payload);

    /* Verify the signature on a key of this subtype (optional) */
    int (*verify_signature)(const struct key *key,
                const struct public_key_signature *sig);
};

static inline
struct asymmetric_key_subtype *asymmetric_key_subtype(const struct key *key)
{
    return key->type_data.p[0];
}

#endif /* _KEYS_ASYMMETRIC_SUBTYPE_H */