linux/security/keys/encrypted-keys/masterkey_trusted.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * Copyright (C) 2010 IBM Corporation
 * Copyright (C) 2010 Politecnico di Torino, Italy
 *                    TORSEC group -- https://security.polito.it
 *
 * Authors:
 * Mimi Zohar <[email protected]>
 * Roberto Sassu <[email protected]>
 *
 * See Documentation/security/keys/trusted-encrypted.rst
 */

#include <linux/uaccess.h>
#include <linux/err.h>
#include <keys/trusted-type.h>
#include <keys/encrypted-type.h>
#include "encrypted.h"

/*
 * request_trusted_key - request the trusted key
 *
 * Trusted keys are sealed to PCRs and other metadata. Although userspace
 * manages both trusted/encrypted key-types, like the encrypted key type
 * data, trusted key type data is not visible decrypted from userspace.
 */
struct key *request_trusted_key(const char *trusted_desc,
				const u8 **master_key, size_t *master_keylen)
{ … }