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| author | Gonglei <arei.gonglei@huawei.com> | 2016-09-26 17:23:22 +0800 |
|---|---|---|
| committer | Daniel P. Berrange <berrange@redhat.com> | 2016-10-19 10:09:24 +0100 |
| commit | 3c28292f390f642bbb3dba0949ecf36aaf7be0d6 (patch) | |
| tree | 21c65cff1327d46cac536b32c671b6bcdd696715 /crypto/cipher.c | |
| parent | f844836ddccf3dbcba142128da5dd8ee618f3e91 (diff) | |
| download | qemu-3c28292f390f642bbb3dba0949ecf36aaf7be0d6.zip qemu-3c28292f390f642bbb3dba0949ecf36aaf7be0d6.tar.gz qemu-3c28292f390f642bbb3dba0949ecf36aaf7be0d6.tar.bz2 | |
crypto: add CTR mode support
Introduce CTR mode support for the cipher APIs.
CTR mode uses a counter rather than a traditional IV.
The counter has additional properties, including a nonce
and initial counter block. We reuse the ctx->iv as
the counter for conveniences.
Both libgcrypt and nettle are support CTR mode, the
cipher-builtin doesn't support yet.
Signed-off-by: Gonglei <arei.gonglei@huawei.com>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Diffstat (limited to 'crypto/cipher.c')
| -rw-r--r-- | crypto/cipher.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/crypto/cipher.c b/crypto/cipher.c index cafb454..a9bca41 100644 --- a/crypto/cipher.c +++ b/crypto/cipher.c @@ -55,6 +55,7 @@ static bool mode_need_iv[QCRYPTO_CIPHER_MODE__MAX] = { [QCRYPTO_CIPHER_MODE_ECB] = false, [QCRYPTO_CIPHER_MODE_CBC] = true, [QCRYPTO_CIPHER_MODE_XTS] = true, + [QCRYPTO_CIPHER_MODE_CTR] = true, }; |