Python crypto_shorthash_siphash24_keybytesの例

コード例 #1

# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

from __future__ import absolute_import, division, print_function

import nacl.exceptions as exc
from nacl._sodium import ffi, lib
from nacl.exceptions import ensure

has_crypto_shorthash_siphashx24 = bool(
    lib.PYNACL_HAS_CRYPTO_SHORTHASH_SIPHASHX24)

BYTES = lib.crypto_shorthash_siphash24_bytes()
KEYBYTES = lib.crypto_shorthash_siphash24_keybytes()

XBYTES = 0
XKEYBYTES = 0

if has_crypto_shorthash_siphashx24:
    XBYTES = lib.crypto_shorthash_siphashx24_bytes()
    XKEYBYTES = lib.crypto_shorthash_siphashx24_keybytes()


def crypto_shorthash_siphash24(data, key):
    """Compute a fast, cryptographic quality, keyed hash of the input data

    :param data:
    :type data: bytes
    :param key: len(key) must be equal to

コード例 #2

ファイル: crypto_shorthash.py プロジェクト: maqp/pynacl

# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

from __future__ import absolute_import, division, print_function

import nacl.exceptions as exc
from nacl._sodium import ffi, lib
from nacl.exceptions import ensure

BYTES = lib.crypto_shorthash_siphash24_bytes()
KEYBYTES = lib.crypto_shorthash_siphash24_keybytes()
XBYTES = lib.crypto_shorthash_siphashx24_bytes()
XKEYBYTES = lib.crypto_shorthash_siphashx24_keybytes()


def crypto_shorthash_siphash24(data, key):
    """Compute a fast, cryptographic quality, keyed hash of the input data

    :param data:
    :type data: bytes
    :param key: len(key) must be equal to
                :py:data:`.KEYBYTES` (16)
    :type key: bytes
    """
    if len(key) != KEYBYTES:
        raise exc.ValueError("Key length must be exactly {0} bytes".format(