5e0e510246
QAPI's 'prefix' feature can make the connection between enumeration type and its constants less than obvious. It's best used with restraint. QCryptoIVGenAlgorithm has a 'prefix' that overrides the generated enumeration constants' prefix to QCRYPTO_IVGEN_ALG. We could simply drop 'prefix', but then the prefix becomes QCRYPTO_IV_GEN_ALGORITHM, which is rather long. We could additionally rename the type to QCryptoIVGenAlg, but I think the abbreviation "alg" is less than clear. Rename the type to QCryptoIVGenAlgo instead. The prefix becomes QCRYPTO_IV_GEN_ALGO. Signed-off-by: Markus Armbruster <armbru@redhat.com> Acked-by: Daniel P. Berrangé <berrange@redhat.com> Message-ID: <20240904111836.3273842-14-armbru@redhat.com>
102 lines
2.5 KiB
C
102 lines
2.5 KiB
C
/*
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* QEMU Crypto block IV generator
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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 2.1 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 "ivgenpriv.h"
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#include "ivgen-plain.h"
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#include "ivgen-plain64.h"
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#include "ivgen-essiv.h"
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QCryptoIVGen *qcrypto_ivgen_new(QCryptoIVGenAlgo alg,
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QCryptoCipherAlgo cipheralg,
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QCryptoHashAlgo hash,
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const uint8_t *key, size_t nkey,
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Error **errp)
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{
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QCryptoIVGen *ivgen = g_new0(QCryptoIVGen, 1);
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ivgen->algorithm = alg;
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ivgen->cipher = cipheralg;
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ivgen->hash = hash;
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switch (alg) {
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case QCRYPTO_IV_GEN_ALGO_PLAIN:
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ivgen->driver = &qcrypto_ivgen_plain;
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break;
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case QCRYPTO_IV_GEN_ALGO_PLAIN64:
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ivgen->driver = &qcrypto_ivgen_plain64;
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break;
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case QCRYPTO_IV_GEN_ALGO_ESSIV:
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ivgen->driver = &qcrypto_ivgen_essiv;
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break;
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default:
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error_setg(errp, "Unknown block IV generator algorithm %d", alg);
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g_free(ivgen);
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return NULL;
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}
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if (ivgen->driver->init(ivgen, key, nkey, errp) < 0) {
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g_free(ivgen);
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return NULL;
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}
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return ivgen;
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}
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int qcrypto_ivgen_calculate(QCryptoIVGen *ivgen,
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uint64_t sector,
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uint8_t *iv, size_t niv,
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Error **errp)
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{
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return ivgen->driver->calculate(ivgen, sector, iv, niv, errp);
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}
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QCryptoIVGenAlgo qcrypto_ivgen_get_algorithm(QCryptoIVGen *ivgen)
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{
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return ivgen->algorithm;
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}
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QCryptoCipherAlgo qcrypto_ivgen_get_cipher(QCryptoIVGen *ivgen)
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{
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return ivgen->cipher;
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}
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QCryptoHashAlgo qcrypto_ivgen_get_hash(QCryptoIVGen *ivgen)
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{
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return ivgen->hash;
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}
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void qcrypto_ivgen_free(QCryptoIVGen *ivgen)
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{
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if (!ivgen) {
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return;
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}
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ivgen->driver->cleanup(ivgen);
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g_free(ivgen);
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}
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