linux/security/integrity/ima/ima_asymmetric_keys.c

// SPDX-License-Identifier: GPL-2.0+
/*
 * Copyright (C) 2019 Microsoft Corporation
 *
 * Author: Lakshmi Ramasubramanian ([email protected])
 *
 * File: ima_asymmetric_keys.c
 *       Defines an IMA hook to measure asymmetric keys on key
 *       create or update.
 */

#include <keys/asymmetric-type.h>
#include <linux/user_namespace.h>
#include <linux/ima.h>
#include "ima.h"

/**
 * ima_post_key_create_or_update - measure asymmetric keys
 * @keyring: keyring to which the key is linked to
 * @key: created or updated key
 * @payload: The data used to instantiate or update the key.
 * @payload_len: The length of @payload.
 * @flags: key flags
 * @create: flag indicating whether the key was created or updated
 *
 * Keys can only be measured, not appraised.
 * The payload data used to instantiate or update the key is measured.
 */
void ima_post_key_create_or_update(struct key *keyring, struct key *key,
				   const void *payload, size_t payload_len,
				   unsigned long flags, bool create)
{ … }