| /* |
| * 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 "crypto/ivgenpriv.h" |
| #include "crypto/ivgen-plain.h" |
| #include "crypto/ivgen-plain64.h" |
| #include "crypto/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); |
| } |