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37788f253a
The LUKS data format includes use of PBKDF2 (Password-Based Key Derivation Function). The Nettle library can provide an implementation of this, but we don't want code directly depending on a specific crypto library backend. Introduce a new include/crypto/pbkdf.h header which defines a QEMU API for invoking PBKDK2. The initial implementations are backed by nettle & gcrypt, which are commonly available with distros shipping GNUTLS. The test suite data is taken from the cryptsetup codebase under the LGPLv2.1+ license. This merely aims to verify that whatever backend we provide for this function in QEMU will comply with the spec. Reviewed-by: Fam Zheng <famz@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
43 lines
1.5 KiB
C
43 lines
1.5 KiB
C
/*
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* QEMU Crypto PBKDF support (Password-Based Key Derivation Function)
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*
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* Copyright (c) 2015-2016 Red Hat, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include "qemu/osdep.h"
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#include "crypto/pbkdf.h"
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bool qcrypto_pbkdf2_supports(QCryptoHashAlgorithm hash G_GNUC_UNUSED)
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{
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return false;
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}
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int qcrypto_pbkdf2(QCryptoHashAlgorithm hash G_GNUC_UNUSED,
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const uint8_t *key G_GNUC_UNUSED,
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size_t nkey G_GNUC_UNUSED,
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const uint8_t *salt G_GNUC_UNUSED,
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size_t nsalt G_GNUC_UNUSED,
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unsigned int iterations G_GNUC_UNUSED,
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uint8_t *out G_GNUC_UNUSED,
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size_t nout G_GNUC_UNUSED,
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Error **errp)
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{
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error_setg_errno(errp, ENOSYS,
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"No crypto library supporting PBKDF in this build");
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return -1;
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}
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