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crypto: cipher: add cipher driver framework

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1) makes the public APIs in cipher-nettle/gcrypt/builtin static,
   and rename them with "nettle/gcrypt/builtin" prefix.

2) introduces cipher framework, including QCryptoCipherDriver
   and new public APIs.

Reviewed-by: Gonglei <arei.gonglei@huawei.com>
Signed-off-by: Longpeng(Mike) <longpeng2@huawei.com>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
This commit is contained in:
Longpeng(Mike) 2017-07-14 14:03:58 -04:00 • committed by Daniel P. Berrange
parent d962c6266c
commit 75c8007809
6 changed files with 190 additions and 123 deletions
Download patch file Download diff file Expand all files Collapse all files

65
crypto/cipher.c
View file

@ -21,6 +21,7 @@
#include "qemu/osdep.h"
#include "qapi/error.h"
#include "crypto/cipher.h"
#include "cipherpriv.h"
static size_t alg_key_len[QCRYPTO_CIPHER_ALG__MAX] = {
@ -155,3 +156,67 @@ qcrypto_cipher_munge_des_rfb_key(const uint8_t *key,
#else
#include "crypto/cipher-builtin.c"
#endif
QCryptoCipher *qcrypto_cipher_new(QCryptoCipherAlgorithm alg,
QCryptoCipherMode mode,
const uint8_t *key, size_t nkey,
Error **errp)
{
QCryptoCipher *cipher;
void *ctx;
ctx = qcrypto_cipher_ctx_new(alg, mode, key, nkey, errp);
if (!ctx) {
return NULL;
}
cipher = g_new0(QCryptoCipher, 1);
cipher->alg = alg;
cipher->mode = mode;
cipher->opaque = ctx;
cipher->driver = (void *)&qcrypto_cipher_lib_driver;
return cipher;
}
int qcrypto_cipher_encrypt(QCryptoCipher *cipher,
const void *in,
void *out,
size_t len,
Error **errp)
{
QCryptoCipherDriver *drv = cipher->driver;
return drv->cipher_encrypt(cipher, in, out, len, errp);
}
int qcrypto_cipher_decrypt(QCryptoCipher *cipher,
const void *in,
void *out,
size_t len,
Error **errp)
{
QCryptoCipherDriver *drv = cipher->driver;
return drv->cipher_decrypt(cipher, in, out, len, errp);
}
int qcrypto_cipher_setiv(QCryptoCipher *cipher,
const uint8_t *iv, size_t niv,
Error **errp)
{
QCryptoCipherDriver *drv = cipher->driver;
return drv->cipher_setiv(cipher, iv, niv, errp);
}
void qcrypto_cipher_free(QCryptoCipher *cipher)
{
QCryptoCipherDriver *drv;
if (cipher) {
drv = cipher->driver;
drv->cipher_free(cipher);
g_free(cipher);
}
}