/* * QEMU Crypto block IV generator * * Copyright (c) 2015-2016 Red Hat, Inc. * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, see <http://www.gnu.org/licenses/>. * */ #include "qemu/osdep.h" #include "qapi/error.h" #include "ivgenpriv.h" #include "ivgen-plain.h" #include "ivgen-plain64.h" #include "ivgen-essiv.h" QCryptoIVGen *qcrypto_ivgen_new(QCryptoIVGenAlgorithm alg, QCryptoCipherAlgorithm cipheralg, QCryptoHashAlgorithm hash, const uint8_t *key, size_t nkey, Error **errp) { QCryptoIVGen *ivgen = g_new0(QCryptoIVGen, 1); ivgen->algorithm = alg; ivgen->cipher = cipheralg; ivgen->hash = hash; switch (alg) { case QCRYPTO_IVGEN_ALG_PLAIN: ivgen->driver = &qcrypto_ivgen_plain; break; case QCRYPTO_IVGEN_ALG_PLAIN64: ivgen->driver = &qcrypto_ivgen_plain64; break; case QCRYPTO_IVGEN_ALG_ESSIV: ivgen->driver = &qcrypto_ivgen_essiv; break; default: error_setg(errp, "Unknown block IV generator algorithm %d", alg); g_free(ivgen); return NULL; } if (ivgen->driver->init(ivgen, key, nkey, errp) < 0) { g_free(ivgen); return NULL; } return ivgen; } int qcrypto_ivgen_calculate(QCryptoIVGen *ivgen, uint64_t sector, uint8_t *iv, size_t niv, Error **errp) { return ivgen->driver->calculate(ivgen, sector, iv, niv, errp); } QCryptoIVGenAlgorithm qcrypto_ivgen_get_algorithm(QCryptoIVGen *ivgen) { return ivgen->algorithm; } QCryptoCipherAlgorithm qcrypto_ivgen_get_cipher(QCryptoIVGen *ivgen) { return ivgen->cipher; } QCryptoHashAlgorithm qcrypto_ivgen_get_hash(QCryptoIVGen *ivgen) { return ivgen->hash; } void qcrypto_ivgen_free(QCryptoIVGen *ivgen) { if (!ivgen) { return; } ivgen->driver->cleanup(ivgen); g_free(ivgen); }