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crypto: cipher: introduce qcrypto_cipher_ctx_new for nettle-backend 

Extracts qcrypto_cipher_ctx_new() from qcrypto_cipher_new() for
nettle-backend impls.

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 14:03:56 -04:00 committed by Daniel P. Berrange
parent 468fb27154
commit eabe6c58ac
1 changed files with 29 additions and 12 deletions
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41
crypto/cipher-nettle.c
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@ -262,12 +262,12 @@ static void nettle_cipher_free_ctx(QCryptoCipherNettle *ctx)
}
QCryptoCipher *qcrypto_cipher_new(QCryptoCipherAlgorithm alg,
QCryptoCipherMode mode,
const uint8_t *key, size_t nkey,
Error **errp)
static QCryptoCipherNettle *qcrypto_cipher_ctx_new(QCryptoCipherAlgorithm alg,
QCryptoCipherMode mode,
const uint8_t *key,
size_t nkey,
Error **errp)
{
QCryptoCipher *cipher;
QCryptoCipherNettle *ctx;
uint8_t *rfbkey;
@ -287,12 +287,7 @@ QCryptoCipher *qcrypto_cipher_new(QCryptoCipherAlgorithm alg,
return NULL;
}
cipher = g_new0(QCryptoCipher, 1);
cipher->alg = alg;
cipher->mode = mode;
ctx = g_new0(QCryptoCipherNettle, 1);
cipher->opaque = ctx;
switch (alg) {
case QCRYPTO_CIPHER_ALG_DES_RFB:
@ -436,10 +431,10 @@ QCryptoCipher *qcrypto_cipher_new(QCryptoCipherAlgorithm alg,
ctx->iv = g_new0(uint8_t, ctx->blocksize);
return cipher;
return ctx;
error:
qcrypto_cipher_free(cipher);
nettle_cipher_free_ctx(ctx);
return NULL;
}
@ -561,3 +556,25 @@ int qcrypto_cipher_setiv(QCryptoCipher *cipher,
memcpy(ctx->iv, iv, niv);
return 0;
}
QCryptoCipher *qcrypto_cipher_new(QCryptoCipherAlgorithm alg,
QCryptoCipherMode mode,
const uint8_t *key, size_t nkey,
Error **errp)
{
QCryptoCipher *cipher;
QCryptoCipherNettle *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;
return cipher;
}