Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
44 lines
1.2 KiB
C
44 lines
1.2 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright (C) 2010 IBM Corporation
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* Copyright (C) 2010 Politecnico di Torino, Italy
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* TORSEC group -- https://security.polito.it
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*
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* Authors:
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* Mimi Zohar <zohar@us.ibm.com>
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* Roberto Sassu <roberto.sassu@polito.it>
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*
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* See Documentation/security/keys/trusted-encrypted.rst
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*/
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#include <linux/uaccess.h>
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#include <linux/err.h>
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#include <keys/trusted-type.h>
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#include <keys/encrypted-type.h>
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#include "encrypted.h"
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/*
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* request_trusted_key - request the trusted key
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*
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* Trusted keys are sealed to PCRs and other metadata. Although userspace
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* manages both trusted/encrypted key-types, like the encrypted key type
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* data, trusted key type data is not visible decrypted from userspace.
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*/
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struct key *request_trusted_key(const char *trusted_desc,
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const u8 **master_key, size_t *master_keylen)
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{
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struct trusted_key_payload *tpayload;
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struct key *tkey;
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tkey = request_key(&key_type_trusted, trusted_desc, NULL);
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if (IS_ERR(tkey))
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goto error;
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down_read(&tkey->sem);
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tpayload = tkey->payload.data[0];
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*master_key = tpayload->key;
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*master_keylen = tpayload->key_len;
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error:
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return tkey;
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}
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