crypto: Rename cipher include files to .c.inc

QEMU standard procedure for included c files is to use *.c.inc.
E.g. there are a different set of checks that are applied.

Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>

1 files changed, 0 insertions, 734 deletions

diff --git a/crypto/cipher-nettle.c b/crypto/cipher-nettle.c
deleted file mode 100644
index 0677fdf..0000000
--- a/crypto/cipher-nettle.c
+++ /dev/null
@@ -1,734 +0,0 @@
-/*
- * QEMU Crypto cipher nettle algorithms
- *
- * Copyright (c) 2015 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 2.1 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"
-#ifdef CONFIG_QEMU_PRIVATE_XTS
-#include "crypto/xts.h"
-#endif
-#include "cipherpriv.h"
-
-#include <nettle/nettle-types.h>
-#include <nettle/aes.h>
-#include <nettle/des.h>
-#include <nettle/cbc.h>
-#include <nettle/cast128.h>
-#include <nettle/serpent.h>
-#include <nettle/twofish.h>
-#include <nettle/ctr.h>
-#ifndef CONFIG_QEMU_PRIVATE_XTS
-#include <nettle/xts.h>
-#endif
-
-typedef void (*QCryptoCipherNettleFuncWrapper)(const void *ctx,
-                                               size_t length,
-                                               uint8_t *dst,
-                                               const uint8_t *src);
-
-#if CONFIG_NETTLE_VERSION_MAJOR < 3
-typedef nettle_crypt_func * QCryptoCipherNettleFuncNative;
-typedef void *       cipher_ctx_t;
-typedef unsigned     cipher_length_t;
-
-#define cast5_set_key cast128_set_key
-
-#define aes128_ctx aes_ctx
-#define aes192_ctx aes_ctx
-#define aes256_ctx aes_ctx
-#define aes128_set_encrypt_key(c, k) \
-    aes_set_encrypt_key(c, 16, k)
-#define aes192_set_encrypt_key(c, k) \
-    aes_set_encrypt_key(c, 24, k)
-#define aes256_set_encrypt_key(c, k) \
-    aes_set_encrypt_key(c, 32, k)
-#define aes128_set_decrypt_key(c, k) \
-    aes_set_decrypt_key(c, 16, k)
-#define aes192_set_decrypt_key(c, k) \
-    aes_set_decrypt_key(c, 24, k)
-#define aes256_set_decrypt_key(c, k) \
-    aes_set_decrypt_key(c, 32, k)
-#define aes128_encrypt aes_encrypt
-#define aes192_encrypt aes_encrypt
-#define aes256_encrypt aes_encrypt
-#define aes128_decrypt aes_decrypt
-#define aes192_decrypt aes_decrypt
-#define aes256_decrypt aes_decrypt
-#else
-typedef nettle_cipher_func * QCryptoCipherNettleFuncNative;
-typedef const void * cipher_ctx_t;
-typedef size_t       cipher_length_t;
-#endif
-
-typedef struct QCryptoNettleAES128 {
-    struct aes128_ctx enc;
-    struct aes128_ctx dec;
-} QCryptoNettleAES128;
-
-typedef struct QCryptoNettleAES192 {
-    struct aes192_ctx enc;
-    struct aes192_ctx dec;
-} QCryptoNettleAES192;
-
-typedef struct QCryptoNettleAES256 {
-    struct aes256_ctx enc;
-    struct aes256_ctx dec;
-} QCryptoNettleAES256;
-
-static void aes128_encrypt_native(cipher_ctx_t ctx, cipher_length_t length,
-                                  uint8_t *dst, const uint8_t *src)
-{
-    const QCryptoNettleAES128 *aesctx = ctx;
-    aes128_encrypt(&aesctx->enc, length, dst, src);
-}
-
-static void aes128_decrypt_native(cipher_ctx_t ctx, cipher_length_t length,
-                                  uint8_t *dst, const uint8_t *src)
-{
-    const QCryptoNettleAES128 *aesctx = ctx;
-    aes128_decrypt(&aesctx->dec, length, dst, src);
-}
-
-static void aes192_encrypt_native(cipher_ctx_t ctx, cipher_length_t length,
-                               uint8_t *dst, const uint8_t *src)
-{
-    const QCryptoNettleAES192 *aesctx = ctx;
-    aes192_encrypt(&aesctx->enc, length, dst, src);
-}
-
-static void aes192_decrypt_native(cipher_ctx_t ctx, cipher_length_t length,
-                               uint8_t *dst, const uint8_t *src)
-{
-    const QCryptoNettleAES192 *aesctx = ctx;
-    aes192_decrypt(&aesctx->dec, length, dst, src);
-}
-
-static void aes256_encrypt_native(cipher_ctx_t ctx, cipher_length_t length,
-                               uint8_t *dst, const uint8_t *src)
-{
-    const QCryptoNettleAES256 *aesctx = ctx;
-    aes256_encrypt(&aesctx->enc, length, dst, src);
-}
-
-static void aes256_decrypt_native(cipher_ctx_t ctx, cipher_length_t length,
-                               uint8_t *dst, const uint8_t *src)
-{
-    const QCryptoNettleAES256 *aesctx = ctx;
-    aes256_decrypt(&aesctx->dec, length, dst, src);
-}
-
-static void des_encrypt_native(cipher_ctx_t ctx, cipher_length_t length,
-                               uint8_t *dst, const uint8_t *src)
-{
-    des_encrypt(ctx, length, dst, src);
-}
-
-static void des_decrypt_native(cipher_ctx_t ctx, cipher_length_t length,
-                               uint8_t *dst, const uint8_t *src)
-{
-    des_decrypt(ctx, length, dst, src);
-}
-
-static void des3_encrypt_native(cipher_ctx_t ctx, cipher_length_t length,
-                                uint8_t *dst, const uint8_t *src)
-{
-    des3_encrypt(ctx, length, dst, src);
-}
-
-static void des3_decrypt_native(cipher_ctx_t ctx, cipher_length_t length,
-                                uint8_t *dst, const uint8_t *src)
-{
-    des3_decrypt(ctx, length, dst, src);
-}
-
-static void cast128_encrypt_native(cipher_ctx_t ctx, cipher_length_t length,
-                                   uint8_t *dst, const uint8_t *src)
-{
-    cast128_encrypt(ctx, length, dst, src);
-}
-
-static void cast128_decrypt_native(cipher_ctx_t ctx, cipher_length_t length,
-                                   uint8_t *dst, const uint8_t *src)
-{
-    cast128_decrypt(ctx, length, dst, src);
-}
-
-static void serpent_encrypt_native(cipher_ctx_t ctx, cipher_length_t length,
-                                   uint8_t *dst, const uint8_t *src)
-{
-    serpent_encrypt(ctx, length, dst, src);
-}
-
-static void serpent_decrypt_native(cipher_ctx_t ctx, cipher_length_t length,
-                                   uint8_t *dst, const uint8_t *src)
-{
-    serpent_decrypt(ctx, length, dst, src);
-}
-
-static void twofish_encrypt_native(cipher_ctx_t ctx, cipher_length_t length,
-                                   uint8_t *dst, const uint8_t *src)
-{
-    twofish_encrypt(ctx, length, dst, src);
-}
-
-static void twofish_decrypt_native(cipher_ctx_t ctx, cipher_length_t length,
-                                   uint8_t *dst, const uint8_t *src)
-{
-    twofish_decrypt(ctx, length, dst, src);
-}
-
-static void aes128_encrypt_wrapper(const void *ctx, size_t length,
-                                uint8_t *dst, const uint8_t *src)
-{
-    const QCryptoNettleAES128 *aesctx = ctx;
-    aes128_encrypt(&aesctx->enc, length, dst, src);
-}
-
-static void aes128_decrypt_wrapper(const void *ctx, size_t length,
-                                uint8_t *dst, const uint8_t *src)
-{
-    const QCryptoNettleAES128 *aesctx = ctx;
-    aes128_decrypt(&aesctx->dec, length, dst, src);
-}
-
-static void aes192_encrypt_wrapper(const void *ctx, size_t length,
-                                uint8_t *dst, const uint8_t *src)
-{
-    const QCryptoNettleAES192 *aesctx = ctx;
-    aes192_encrypt(&aesctx->enc, length, dst, src);
-}
-
-static void aes192_decrypt_wrapper(const void *ctx, size_t length,
-                                uint8_t *dst, const uint8_t *src)
-{
-    const QCryptoNettleAES192 *aesctx = ctx;
-    aes192_decrypt(&aesctx->dec, length, dst, src);
-}
-
-static void aes256_encrypt_wrapper(const void *ctx, size_t length,
-                                uint8_t *dst, const uint8_t *src)
-{
-    const QCryptoNettleAES256 *aesctx = ctx;
-    aes256_encrypt(&aesctx->enc, length, dst, src);
-}
-
-static void aes256_decrypt_wrapper(const void *ctx, size_t length,
-                                uint8_t *dst, const uint8_t *src)
-{
-    const QCryptoNettleAES256 *aesctx = ctx;
-    aes256_decrypt(&aesctx->dec, length, dst, src);
-}
-
-static void des_encrypt_wrapper(const void *ctx, size_t length,
-                                uint8_t *dst, const uint8_t *src)
-{
-    des_encrypt(ctx, length, dst, src);
-}
-
-static void des_decrypt_wrapper(const void *ctx, size_t length,
-                                uint8_t *dst, const uint8_t *src)
-{
-    des_decrypt(ctx, length, dst, src);
-}
-
-static void des3_encrypt_wrapper(const void *ctx, size_t length,
-                                uint8_t *dst, const uint8_t *src)
-{
-    des3_encrypt(ctx, length, dst, src);
-}
-
-static void des3_decrypt_wrapper(const void *ctx, size_t length,
-                                uint8_t *dst, const uint8_t *src)
-{
-    des3_decrypt(ctx, length, dst, src);
-}
-
-static void cast128_encrypt_wrapper(const void *ctx, size_t length,
-                                    uint8_t *dst, const uint8_t *src)
-{
-    cast128_encrypt(ctx, length, dst, src);
-}
-
-static void cast128_decrypt_wrapper(const void *ctx, size_t length,
-                                    uint8_t *dst, const uint8_t *src)
-{
-    cast128_decrypt(ctx, length, dst, src);
-}
-
-static void serpent_encrypt_wrapper(const void *ctx, size_t length,
-                                    uint8_t *dst, const uint8_t *src)
-{
-    serpent_encrypt(ctx, length, dst, src);
-}
-
-static void serpent_decrypt_wrapper(const void *ctx, size_t length,
-                                    uint8_t *dst, const uint8_t *src)
-{
-    serpent_decrypt(ctx, length, dst, src);
-}
-
-static void twofish_encrypt_wrapper(const void *ctx, size_t length,
-                                    uint8_t *dst, const uint8_t *src)
-{
-    twofish_encrypt(ctx, length, dst, src);
-}
-
-static void twofish_decrypt_wrapper(const void *ctx, size_t length,
-                                    uint8_t *dst, const uint8_t *src)
-{
-    twofish_decrypt(ctx, length, dst, src);
-}
-
-typedef struct QCryptoCipherNettle QCryptoCipherNettle;
-struct QCryptoCipherNettle {
-    /* Primary cipher context for all modes */
-    void *ctx;
-    /* Second cipher context for XTS mode only */
-    void *ctx_tweak;
-    /* Cipher callbacks for both contexts */
-    QCryptoCipherNettleFuncNative alg_encrypt_native;
-    QCryptoCipherNettleFuncNative alg_decrypt_native;
-    QCryptoCipherNettleFuncWrapper alg_encrypt_wrapper;
-    QCryptoCipherNettleFuncWrapper alg_decrypt_wrapper;
-    /* Initialization vector or Counter */
-    uint8_t *iv;
-    size_t blocksize;
-};
-
-bool qcrypto_cipher_supports(QCryptoCipherAlgorithm alg,
-                             QCryptoCipherMode mode)
-{
-    switch (alg) {
-    case QCRYPTO_CIPHER_ALG_DES_RFB:
-    case QCRYPTO_CIPHER_ALG_3DES:
-    case QCRYPTO_CIPHER_ALG_AES_128:
-    case QCRYPTO_CIPHER_ALG_AES_192:
-    case QCRYPTO_CIPHER_ALG_AES_256:
-    case QCRYPTO_CIPHER_ALG_CAST5_128:
-    case QCRYPTO_CIPHER_ALG_SERPENT_128:
-    case QCRYPTO_CIPHER_ALG_SERPENT_192:
-    case QCRYPTO_CIPHER_ALG_SERPENT_256:
-    case QCRYPTO_CIPHER_ALG_TWOFISH_128:
-    case QCRYPTO_CIPHER_ALG_TWOFISH_192:
-    case QCRYPTO_CIPHER_ALG_TWOFISH_256:
-        break;
-    default:
-        return false;
-    }
-
-    switch (mode) {
-    case QCRYPTO_CIPHER_MODE_ECB:
-    case QCRYPTO_CIPHER_MODE_CBC:
-    case QCRYPTO_CIPHER_MODE_XTS:
-    case QCRYPTO_CIPHER_MODE_CTR:
-        return true;
-    default:
-        return false;
-    }
-}
-
-
-static void
-qcrypto_nettle_cipher_free_ctx(QCryptoCipherNettle *ctx)
-{
-    if (!ctx) {
-        return;
-    }
-
-    g_free(ctx->iv);
-    g_free(ctx->ctx);
-    g_free(ctx->ctx_tweak);
-    g_free(ctx);
-}
-
-
-static QCryptoCipherNettle *qcrypto_cipher_ctx_new(QCryptoCipherAlgorithm alg,
-                                                   QCryptoCipherMode mode,
-                                                   const uint8_t *key,
-                                                   size_t nkey,
-                                                   Error **errp)
-{
-    QCryptoCipherNettle *ctx;
-    uint8_t *rfbkey;
-
-    switch (mode) {
-    case QCRYPTO_CIPHER_MODE_ECB:
-    case QCRYPTO_CIPHER_MODE_CBC:
-    case QCRYPTO_CIPHER_MODE_XTS:
-    case QCRYPTO_CIPHER_MODE_CTR:
-        break;
-    default:
-        error_setg(errp, "Unsupported cipher mode %s",
-                   QCryptoCipherMode_str(mode));
-        return NULL;
-    }
-
-    if (!qcrypto_cipher_validate_key_length(alg, mode, nkey, errp)) {
-        return NULL;
-    }
-
-    ctx = g_new0(QCryptoCipherNettle, 1);
-
-    switch (alg) {
-    case QCRYPTO_CIPHER_ALG_DES_RFB:
-        ctx->ctx = g_new0(struct des_ctx, 1);
-        rfbkey = qcrypto_cipher_munge_des_rfb_key(key, nkey);
-        des_set_key(ctx->ctx, rfbkey);
-        g_free(rfbkey);
-
-        ctx->alg_encrypt_native = des_encrypt_native;
-        ctx->alg_decrypt_native = des_decrypt_native;
-        ctx->alg_encrypt_wrapper = des_encrypt_wrapper;
-        ctx->alg_decrypt_wrapper = des_decrypt_wrapper;
-
-        ctx->blocksize = DES_BLOCK_SIZE;
-        break;
-
-    case QCRYPTO_CIPHER_ALG_3DES:
-        ctx->ctx = g_new0(struct des3_ctx, 1);
-        des3_set_key(ctx->ctx, key);
-
-        ctx->alg_encrypt_native = des3_encrypt_native;
-        ctx->alg_decrypt_native = des3_decrypt_native;
-        ctx->alg_encrypt_wrapper = des3_encrypt_wrapper;
-        ctx->alg_decrypt_wrapper = des3_decrypt_wrapper;
-
-        ctx->blocksize = DES3_BLOCK_SIZE;
-        break;
-
-    case QCRYPTO_CIPHER_ALG_AES_128:
-        ctx->ctx = g_new0(QCryptoNettleAES128, 1);
-
-        if (mode == QCRYPTO_CIPHER_MODE_XTS) {
-            ctx->ctx_tweak = g_new0(QCryptoNettleAES128, 1);
-
-            nkey /= 2;
-            aes128_set_encrypt_key(&((QCryptoNettleAES128 *)ctx->ctx)->enc,
-                                   key);
-            aes128_set_decrypt_key(&((QCryptoNettleAES128 *)ctx->ctx)->dec,
-                                   key);
-
-            aes128_set_encrypt_key(&((QCryptoNettleAES128 *)ctx->ctx_tweak)->
-                                   enc, key + nkey);
-            aes128_set_decrypt_key(&((QCryptoNettleAES128 *)ctx->ctx_tweak)->
-                                   dec, key + nkey);
-        } else {
-            aes128_set_encrypt_key(&((QCryptoNettleAES128 *)ctx->ctx)->enc,
-                                   key);
-            aes128_set_decrypt_key(&((QCryptoNettleAES128 *)ctx->ctx)->dec,
-                                   key);
-        }
-
-        ctx->alg_encrypt_native = aes128_encrypt_native;
-        ctx->alg_decrypt_native = aes128_decrypt_native;
-        ctx->alg_encrypt_wrapper = aes128_encrypt_wrapper;
-        ctx->alg_decrypt_wrapper = aes128_decrypt_wrapper;
-
-        ctx->blocksize = AES_BLOCK_SIZE;
-        break;
-
-    case QCRYPTO_CIPHER_ALG_AES_192:
-        ctx->ctx = g_new0(QCryptoNettleAES192, 1);
-
-        if (mode == QCRYPTO_CIPHER_MODE_XTS) {
-            ctx->ctx_tweak = g_new0(QCryptoNettleAES192, 1);
-
-            nkey /= 2;
-            aes192_set_encrypt_key(&((QCryptoNettleAES192 *)ctx->ctx)->enc,
-                                   key);
-            aes192_set_decrypt_key(&((QCryptoNettleAES192 *)ctx->ctx)->dec,
-                                   key);
-
-            aes192_set_encrypt_key(&((QCryptoNettleAES192 *)ctx->ctx_tweak)->
-                                   enc, key + nkey);
-            aes192_set_decrypt_key(&((QCryptoNettleAES192 *)ctx->ctx_tweak)->
-                                   dec, key + nkey);
-        } else {
-            aes192_set_encrypt_key(&((QCryptoNettleAES192 *)ctx->ctx)->enc,
-                                   key);
-            aes192_set_decrypt_key(&((QCryptoNettleAES192 *)ctx->ctx)->dec,
-                                   key);
-        }
-
-        ctx->alg_encrypt_native = aes192_encrypt_native;
-        ctx->alg_decrypt_native = aes192_decrypt_native;
-        ctx->alg_encrypt_wrapper = aes192_encrypt_wrapper;
-        ctx->alg_decrypt_wrapper = aes192_decrypt_wrapper;
-
-        ctx->blocksize = AES_BLOCK_SIZE;
-        break;
-
-    case QCRYPTO_CIPHER_ALG_AES_256:
-        ctx->ctx = g_new0(QCryptoNettleAES256, 1);
-
-        if (mode == QCRYPTO_CIPHER_MODE_XTS) {
-            ctx->ctx_tweak = g_new0(QCryptoNettleAES256, 1);
-
-            nkey /= 2;
-            aes256_set_encrypt_key(&((QCryptoNettleAES256 *)ctx->ctx)->enc,
-                                   key);
-            aes256_set_decrypt_key(&((QCryptoNettleAES256 *)ctx->ctx)->dec,
-                                   key);
-
-            aes256_set_encrypt_key(&((QCryptoNettleAES256 *)ctx->ctx_tweak)->
-                                   enc, key + nkey);
-            aes256_set_decrypt_key(&((QCryptoNettleAES256 *)ctx->ctx_tweak)->
-                                   dec, key + nkey);
-        } else {
-            aes256_set_encrypt_key(&((QCryptoNettleAES256 *)ctx->ctx)->enc,
-                                   key);
-            aes256_set_decrypt_key(&((QCryptoNettleAES256 *)ctx->ctx)->dec,
-                                   key);
-        }
-
-        ctx->alg_encrypt_native = aes256_encrypt_native;
-        ctx->alg_decrypt_native = aes256_decrypt_native;
-        ctx->alg_encrypt_wrapper = aes256_encrypt_wrapper;
-        ctx->alg_decrypt_wrapper = aes256_decrypt_wrapper;
-
-        ctx->blocksize = AES_BLOCK_SIZE;
-        break;
-
-    case QCRYPTO_CIPHER_ALG_CAST5_128:
-        ctx->ctx = g_new0(struct cast128_ctx, 1);
-
-        if (mode == QCRYPTO_CIPHER_MODE_XTS) {
-            ctx->ctx_tweak = g_new0(struct cast128_ctx, 1);
-
-            nkey /= 2;
-            cast5_set_key(ctx->ctx, nkey, key);
-            cast5_set_key(ctx->ctx_tweak, nkey, key + nkey);
-        } else {
-            cast5_set_key(ctx->ctx, nkey, key);
-        }
-
-        ctx->alg_encrypt_native = cast128_encrypt_native;
-        ctx->alg_decrypt_native = cast128_decrypt_native;
-        ctx->alg_encrypt_wrapper = cast128_encrypt_wrapper;
-        ctx->alg_decrypt_wrapper = cast128_decrypt_wrapper;
-
-        ctx->blocksize = CAST128_BLOCK_SIZE;
-        break;
-
-    case QCRYPTO_CIPHER_ALG_SERPENT_128:
-    case QCRYPTO_CIPHER_ALG_SERPENT_192:
-    case QCRYPTO_CIPHER_ALG_SERPENT_256:
-        ctx->ctx = g_new0(struct serpent_ctx, 1);
-
-        if (mode == QCRYPTO_CIPHER_MODE_XTS) {
-            ctx->ctx_tweak = g_new0(struct serpent_ctx, 1);
-
-            nkey /= 2;
-            serpent_set_key(ctx->ctx, nkey, key);
-            serpent_set_key(ctx->ctx_tweak, nkey, key + nkey);
-        } else {
-            serpent_set_key(ctx->ctx, nkey, key);
-        }
-
-        ctx->alg_encrypt_native = serpent_encrypt_native;
-        ctx->alg_decrypt_native = serpent_decrypt_native;
-        ctx->alg_encrypt_wrapper = serpent_encrypt_wrapper;
-        ctx->alg_decrypt_wrapper = serpent_decrypt_wrapper;
-
-        ctx->blocksize = SERPENT_BLOCK_SIZE;
-        break;
-
-    case QCRYPTO_CIPHER_ALG_TWOFISH_128:
-    case QCRYPTO_CIPHER_ALG_TWOFISH_192:
-    case QCRYPTO_CIPHER_ALG_TWOFISH_256:
-        ctx->ctx = g_new0(struct twofish_ctx, 1);
-
-        if (mode == QCRYPTO_CIPHER_MODE_XTS) {
-            ctx->ctx_tweak = g_new0(struct twofish_ctx, 1);
-
-            nkey /= 2;
-            twofish_set_key(ctx->ctx, nkey, key);
-            twofish_set_key(ctx->ctx_tweak, nkey, key + nkey);
-        } else {
-            twofish_set_key(ctx->ctx, nkey, key);
-        }
-
-        ctx->alg_encrypt_native = twofish_encrypt_native;
-        ctx->alg_decrypt_native = twofish_decrypt_native;
-        ctx->alg_encrypt_wrapper = twofish_encrypt_wrapper;
-        ctx->alg_decrypt_wrapper = twofish_decrypt_wrapper;
-
-        ctx->blocksize = TWOFISH_BLOCK_SIZE;
-        break;
-
-    default:
-        error_setg(errp, "Unsupported cipher algorithm %s",
-                   QCryptoCipherAlgorithm_str(alg));
-        goto error;
-    }
-    g_assert(is_power_of_2(ctx->blocksize));
-
-    if (mode == QCRYPTO_CIPHER_MODE_XTS &&
-        ctx->blocksize != XTS_BLOCK_SIZE) {
-        error_setg(errp, "Cipher block size %zu must equal XTS block size %d",
-                   ctx->blocksize, XTS_BLOCK_SIZE);
-        goto error;
-    }
-
-    ctx->iv = g_new0(uint8_t, ctx->blocksize);
-
-    return ctx;
-
- error:
-    qcrypto_nettle_cipher_free_ctx(ctx);
-    return NULL;
-}
-
-
-static void
-qcrypto_nettle_cipher_ctx_free(QCryptoCipher *cipher)
-{
-    QCryptoCipherNettle *ctx;
-
-    ctx = cipher->opaque;
-    qcrypto_nettle_cipher_free_ctx(ctx);
-}
-
-
-static int
-qcrypto_nettle_cipher_encrypt(QCryptoCipher *cipher,
-                              const void *in,
-                              void *out,
-                              size_t len,
-                              Error **errp)
-{
-    QCryptoCipherNettle *ctx = cipher->opaque;
-
-    if (len & (ctx->blocksize - 1)) {
-        error_setg(errp, "Length %zu must be a multiple of block size %zu",
-                   len, ctx->blocksize);
-        return -1;
-    }
-
-    switch (cipher->mode) {
-    case QCRYPTO_CIPHER_MODE_ECB:
-        ctx->alg_encrypt_wrapper(ctx->ctx, len, out, in);
-        break;
-
-    case QCRYPTO_CIPHER_MODE_CBC:
-        cbc_encrypt(ctx->ctx, ctx->alg_encrypt_native,
-                    ctx->blocksize, ctx->iv,
-                    len, out, in);
-        break;
-
-    case QCRYPTO_CIPHER_MODE_XTS:
-#ifdef CONFIG_QEMU_PRIVATE_XTS
-        xts_encrypt(ctx->ctx, ctx->ctx_tweak,
-                    ctx->alg_encrypt_wrapper, ctx->alg_encrypt_wrapper,
-                    ctx->iv, len, out, in);
-#else
-        xts_encrypt_message(ctx->ctx, ctx->ctx_tweak,
-                            ctx->alg_encrypt_native,
-                            ctx->iv, len, out, in);
-#endif
-        break;
-
-    case QCRYPTO_CIPHER_MODE_CTR:
-        ctr_crypt(ctx->ctx, ctx->alg_encrypt_native,
-                    ctx->blocksize, ctx->iv,
-                    len, out, in);
-        break;
-
-    default:
-        error_setg(errp, "Unsupported cipher mode %s",
-                   QCryptoCipherMode_str(cipher->mode));
-        return -1;
-    }
-    return 0;
-}
-
-
-static int
-qcrypto_nettle_cipher_decrypt(QCryptoCipher *cipher,
-                              const void *in,
-                              void *out,
-                              size_t len,
-                              Error **errp)
-{
-    QCryptoCipherNettle *ctx = cipher->opaque;
-
-    if (len & (ctx->blocksize - 1)) {
-        error_setg(errp, "Length %zu must be a multiple of block size %zu",
-                   len, ctx->blocksize);
-        return -1;
-    }
-
-    switch (cipher->mode) {
-    case QCRYPTO_CIPHER_MODE_ECB:
-        ctx->alg_decrypt_wrapper(ctx->ctx, len, out, in);
-        break;
-
-    case QCRYPTO_CIPHER_MODE_CBC:
-        cbc_decrypt(ctx->ctx, ctx->alg_decrypt_native,
-                    ctx->blocksize, ctx->iv,
-                    len, out, in);
-        break;
-
-    case QCRYPTO_CIPHER_MODE_XTS:
-#ifdef CONFIG_QEMU_PRIVATE_XTS
-        xts_decrypt(ctx->ctx, ctx->ctx_tweak,
-                    ctx->alg_encrypt_wrapper, ctx->alg_decrypt_wrapper,
-                    ctx->iv, len, out, in);
-#else
-        xts_decrypt_message(ctx->ctx, ctx->ctx_tweak,
-                            ctx->alg_decrypt_native,
-                            ctx->alg_encrypt_native,
-                            ctx->iv, len, out, in);
-#endif
-        break;
-    case QCRYPTO_CIPHER_MODE_CTR:
-        ctr_crypt(ctx->ctx, ctx->alg_encrypt_native,
-                    ctx->blocksize, ctx->iv,
-                    len, out, in);
-        break;
-
-    default:
-        error_setg(errp, "Unsupported cipher mode %s",
-                   QCryptoCipherMode_str(cipher->mode));
-        return -1;
-    }
-    return 0;
-}
-
-static int
-qcrypto_nettle_cipher_setiv(QCryptoCipher *cipher,
-                            const uint8_t *iv, size_t niv,
-                            Error **errp)
-{
-    QCryptoCipherNettle *ctx = cipher->opaque;
-    if (niv != ctx->blocksize) {
-        error_setg(errp, "Expected IV size %zu not %zu",
-                   ctx->blocksize, niv);
-        return -1;
-    }
-    memcpy(ctx->iv, iv, niv);
-    return 0;
-}
-
-
-static struct QCryptoCipherDriver qcrypto_cipher_lib_driver = {
-    .cipher_encrypt = qcrypto_nettle_cipher_encrypt,
-    .cipher_decrypt = qcrypto_nettle_cipher_decrypt,
-    .cipher_setiv = qcrypto_nettle_cipher_setiv,
-    .cipher_free = qcrypto_nettle_cipher_ctx_free,
-};