0c16c056a4
Currently the internal hash code is using the gnutls hash APIs. GNUTLS in turn is wrapping either nettle or gcrypt. Not only were the GNUTLS hash APIs not added until GNUTLS 2.9.10, but they don't expose support for all the algorithms QEMU needs to use with LUKS. Address this by directly wrapping nettle/gcrypt in QEMU and avoiding GNUTLS's extra layer of indirection. This gives us support for hash functions on a much wider range of platforms and opens up ability to support more hash functions. It also avoids a GNUTLS bug which would not correctly handle hashing of large data blocks if int != size_t. Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
42 lines
1.3 KiB
C
42 lines
1.3 KiB
C
/*
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* QEMU Crypto hash algorithms
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*
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* Copyright (c) 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 "qapi/error.h"
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#include "crypto/hash.h"
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gboolean qcrypto_hash_supports(QCryptoHashAlgorithm alg G_GNUC_UNUSED)
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{
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return false;
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}
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int qcrypto_hash_bytesv(QCryptoHashAlgorithm alg,
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const struct iovec *iov G_GNUC_UNUSED,
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size_t niov G_GNUC_UNUSED,
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uint8_t **result G_GNUC_UNUSED,
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size_t *resultlen G_GNUC_UNUSED,
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Error **errp)
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{
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error_setg(errp,
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"Hash algorithm %d not supported without GNUTLS",
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alg);
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return -1;
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}
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