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crypto: cipher: introduce context free function

Browse source 
Refactors the qcrypto_cipher_free(), splits it into two parts. One
is gcrypt/nettle__cipher_free_ctx() to free the special context.

This makes code more clear, what's more, it would be used by the
later patch.

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 14:03:54 -04:00 • committed by Daniel P. Berrange
parent 6887dc6700
commit cc5eff0186
2 changed files with 32 additions and 17 deletions
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18
crypto/cipher-nettle.c
View file

@ -249,6 +249,19 @@ bool qcrypto_cipher_supports(QCryptoCipherAlgorithm alg,
}
static void 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);
}
QCryptoCipher *qcrypto_cipher_new(QCryptoCipherAlgorithm alg,
QCryptoCipherMode mode,
const uint8_t *key, size_t nkey,
@ -440,10 +453,7 @@ void qcrypto_cipher_free(QCryptoCipher *cipher)
}
ctx = cipher->opaque;
g_free(ctx->iv);
g_free(ctx->ctx);
g_free(ctx->ctx_tweak);
g_free(ctx);
nettle_cipher_free_ctx(ctx);
g_free(cipher);
}