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-rw-r--r--qemu/crypto/block-qcow.c174
1 files changed, 0 insertions, 174 deletions
diff --git a/qemu/crypto/block-qcow.c b/qemu/crypto/block-qcow.c
deleted file mode 100644
index be88c6f0e..000000000
--- a/qemu/crypto/block-qcow.c
+++ /dev/null
@@ -1,174 +0,0 @@
-/*
- * QEMU Crypto block device encryption QCow/QCow2 AES-CBC format
- *
- * 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/>.
- *
- */
-
-/*
- * Note that the block encryption implemented in this file is broken
- * by design. This exists only to allow data to be liberated from
- * existing qcow[2] images and should not be used in any new areas.
- */
-
-#include "qemu/osdep.h"
-#include "qapi/error.h"
-
-#include "crypto/block-qcow.h"
-#include "crypto/secret.h"
-
-#define QCRYPTO_BLOCK_QCOW_SECTOR_SIZE 512
-
-
-static bool
-qcrypto_block_qcow_has_format(const uint8_t *buf G_GNUC_UNUSED,
- size_t buf_size G_GNUC_UNUSED)
-{
- return false;
-}
-
-
-static int
-qcrypto_block_qcow_init(QCryptoBlock *block,
- const char *keysecret,
- Error **errp)
-{
- char *password;
- int ret;
- uint8_t keybuf[16];
- int len;
-
- memset(keybuf, 0, 16);
-
- password = qcrypto_secret_lookup_as_utf8(keysecret, errp);
- if (!password) {
- return -1;
- }
-
- len = strlen(password);
- memcpy(keybuf, password, MIN(len, sizeof(keybuf)));
- g_free(password);
-
- block->niv = qcrypto_cipher_get_iv_len(QCRYPTO_CIPHER_ALG_AES_128,
- QCRYPTO_CIPHER_MODE_CBC);
- block->ivgen = qcrypto_ivgen_new(QCRYPTO_IVGEN_ALG_PLAIN64,
- 0, 0, NULL, 0, errp);
- if (!block->ivgen) {
- ret = -ENOTSUP;
- goto fail;
- }
-
- block->cipher = qcrypto_cipher_new(QCRYPTO_CIPHER_ALG_AES_128,
- QCRYPTO_CIPHER_MODE_CBC,
- keybuf, G_N_ELEMENTS(keybuf),
- errp);
- if (!block->cipher) {
- ret = -ENOTSUP;
- goto fail;
- }
-
- block->payload_offset = 0;
-
- return 0;
-
- fail:
- qcrypto_cipher_free(block->cipher);
- qcrypto_ivgen_free(block->ivgen);
- return ret;
-}
-
-
-static int
-qcrypto_block_qcow_open(QCryptoBlock *block,
- QCryptoBlockOpenOptions *options,
- QCryptoBlockReadFunc readfunc G_GNUC_UNUSED,
- void *opaque G_GNUC_UNUSED,
- unsigned int flags,
- Error **errp)
-{
- if (flags & QCRYPTO_BLOCK_OPEN_NO_IO) {
- return 0;
- } else {
- if (!options->u.qcow.key_secret) {
- error_setg(errp,
- "Parameter 'key-secret' is required for cipher");
- return -1;
- }
- return qcrypto_block_qcow_init(block,
- options->u.qcow.key_secret, errp);
- }
-}
-
-
-static int
-qcrypto_block_qcow_create(QCryptoBlock *block,
- QCryptoBlockCreateOptions *options,
- QCryptoBlockInitFunc initfunc G_GNUC_UNUSED,
- QCryptoBlockWriteFunc writefunc G_GNUC_UNUSED,
- void *opaque G_GNUC_UNUSED,
- Error **errp)
-{
- if (!options->u.qcow.key_secret) {
- error_setg(errp, "Parameter 'key-secret' is required for cipher");
- return -1;
- }
- /* QCow2 has no special header, since everything is hardwired */
- return qcrypto_block_qcow_init(block, options->u.qcow.key_secret, errp);
-}
-
-
-static void
-qcrypto_block_qcow_cleanup(QCryptoBlock *block)
-{
-}
-
-
-static int
-qcrypto_block_qcow_decrypt(QCryptoBlock *block,
- uint64_t startsector,
- uint8_t *buf,
- size_t len,
- Error **errp)
-{
- return qcrypto_block_decrypt_helper(block->cipher,
- block->niv, block->ivgen,
- QCRYPTO_BLOCK_QCOW_SECTOR_SIZE,
- startsector, buf, len, errp);
-}
-
-
-static int
-qcrypto_block_qcow_encrypt(QCryptoBlock *block,
- uint64_t startsector,
- uint8_t *buf,
- size_t len,
- Error **errp)
-{
- return qcrypto_block_encrypt_helper(block->cipher,
- block->niv, block->ivgen,
- QCRYPTO_BLOCK_QCOW_SECTOR_SIZE,
- startsector, buf, len, errp);
-}
-
-
-const QCryptoBlockDriver qcrypto_block_driver_qcow = {
- .open = qcrypto_block_qcow_open,
- .create = qcrypto_block_qcow_create,
- .cleanup = qcrypto_block_qcow_cleanup,
- .decrypt = qcrypto_block_qcow_decrypt,
- .encrypt = qcrypto_block_qcow_encrypt,
- .has_format = qcrypto_block_qcow_has_format,
-};