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-rw-r--r--qemu/crypto/ivgen-essiv.c120
1 files changed, 0 insertions, 120 deletions
diff --git a/qemu/crypto/ivgen-essiv.c b/qemu/crypto/ivgen-essiv.c
deleted file mode 100644
index 634de6333..000000000
--- a/qemu/crypto/ivgen-essiv.c
+++ /dev/null
@@ -1,120 +0,0 @@
-/*
- * QEMU Crypto block IV generator - essiv
- *
- * 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 "qemu/bswap.h"
-#include "crypto/ivgen-essiv.h"
-
-typedef struct QCryptoIVGenESSIV QCryptoIVGenESSIV;
-struct QCryptoIVGenESSIV {
- QCryptoCipher *cipher;
-};
-
-static int qcrypto_ivgen_essiv_init(QCryptoIVGen *ivgen,
- const uint8_t *key, size_t nkey,
- Error **errp)
-{
- uint8_t *salt;
- size_t nhash;
- size_t nsalt;
- QCryptoIVGenESSIV *essiv = g_new0(QCryptoIVGenESSIV, 1);
-
- /* Not necessarily the same as nkey */
- nsalt = qcrypto_cipher_get_key_len(ivgen->cipher);
-
- nhash = qcrypto_hash_digest_len(ivgen->hash);
- /* Salt must be larger of hash size or key size */
- salt = g_new0(uint8_t, MAX(nhash, nsalt));
-
- if (qcrypto_hash_bytes(ivgen->hash, (const gchar *)key, nkey,
- &salt, &nhash,
- errp) < 0) {
- g_free(essiv);
- return -1;
- }
-
- /* Now potentially truncate salt to match cipher key len */
- essiv->cipher = qcrypto_cipher_new(ivgen->cipher,
- QCRYPTO_CIPHER_MODE_ECB,
- salt, MIN(nhash, nsalt),
- errp);
- if (!essiv->cipher) {
- g_free(essiv);
- g_free(salt);
- return -1;
- }
-
- g_free(salt);
- ivgen->private = essiv;
-
- return 0;
-}
-
-static int qcrypto_ivgen_essiv_calculate(QCryptoIVGen *ivgen,
- uint64_t sector,
- uint8_t *iv, size_t niv,
- Error **errp)
-{
- QCryptoIVGenESSIV *essiv = ivgen->private;
- size_t ndata = qcrypto_cipher_get_block_len(ivgen->cipher);
- uint8_t *data = g_new(uint8_t, ndata);
-
- sector = cpu_to_le64(sector);
- memcpy(data, (uint8_t *)&sector, ndata);
- if (sizeof(sector) < ndata) {
- memset(data + sizeof(sector), 0, ndata - sizeof(sector));
- }
-
- if (qcrypto_cipher_encrypt(essiv->cipher,
- data,
- data,
- ndata,
- errp) < 0) {
- g_free(data);
- return -1;
- }
-
- if (ndata > niv) {
- ndata = niv;
- }
- memcpy(iv, data, ndata);
- if (ndata < niv) {
- memset(iv + ndata, 0, niv - ndata);
- }
- g_free(data);
- return 0;
-}
-
-static void qcrypto_ivgen_essiv_cleanup(QCryptoIVGen *ivgen)
-{
- QCryptoIVGenESSIV *essiv = ivgen->private;
-
- qcrypto_cipher_free(essiv->cipher);
- g_free(essiv);
-}
-
-
-struct QCryptoIVGenDriver qcrypto_ivgen_essiv = {
- .init = qcrypto_ivgen_essiv_init,
- .calculate = qcrypto_ivgen_essiv_calculate,
- .cleanup = qcrypto_ivgen_essiv_cleanup,
-};
-