From ace9429bb58fd418f0c81d4c2835699bddf6bde6 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Thu, 11 Apr 2024 10:27:49 +0200 Subject: Adding upstream version 6.6.15. Signed-off-by: Daniel Baumann --- security/keys/encrypted-keys/masterkey_trusted.c | 43 ++++++++++++++++++++++++ 1 file changed, 43 insertions(+) create mode 100644 security/keys/encrypted-keys/masterkey_trusted.c (limited to 'security/keys/encrypted-keys/masterkey_trusted.c') diff --git a/security/keys/encrypted-keys/masterkey_trusted.c b/security/keys/encrypted-keys/masterkey_trusted.c new file mode 100644 index 0000000000..e6d22ce77e --- /dev/null +++ b/security/keys/encrypted-keys/masterkey_trusted.c @@ -0,0 +1,43 @@ +// 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 + * Roberto Sassu + * + * See Documentation/security/keys/trusted-encrypted.rst + */ + +#include +#include +#include +#include +#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) +{ + struct trusted_key_payload *tpayload; + struct key *tkey; + + tkey = request_key(&key_type_trusted, trusted_desc, NULL); + if (IS_ERR(tkey)) + goto error; + + down_read(&tkey->sem); + tpayload = tkey->payload.data[0]; + *master_key = tpayload->key; + *master_keylen = tpayload->key_len; +error: + return tkey; +} -- cgit v1.2.3