Python crypto_box_beforenmbytes Examples

Example #1

# limitations under the License.

from __future__ import absolute_import, division, print_function

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

__all__ = ["crypto_box_keypair", "crypto_box"]

crypto_box_SECRETKEYBYTES = lib.crypto_box_secretkeybytes()
crypto_box_PUBLICKEYBYTES = lib.crypto_box_publickeybytes()
crypto_box_NONCEBYTES = lib.crypto_box_noncebytes()
crypto_box_ZEROBYTES = lib.crypto_box_zerobytes()
crypto_box_BOXZEROBYTES = lib.crypto_box_boxzerobytes()
crypto_box_BEFORENMBYTES = lib.crypto_box_beforenmbytes()


def crypto_box_keypair():
    """
    Returns a randomly generated public and secret key.

    :rtype: (bytes(public_key), bytes(secret_key))
    """
    pk = ffi.new("unsigned char[]", crypto_box_PUBLICKEYBYTES)
    sk = ffi.new("unsigned char[]", crypto_box_SECRETKEYBYTES)

    rc = lib.crypto_box_keypair(pk, sk)
    ensure(rc == 0, 'Unexpected library error', raising=exc.RuntimeError)

    return (

Example #2

File: crypto_box.py Project: NegativeMjark/pynacl

from __future__ import absolute_import, division, print_function

from nacl._sodium import ffi, lib
from nacl.exceptions import CryptoError


__all__ = ["crypto_box_keypair", "crypto_box"]


crypto_box_SECRETKEYBYTES = lib.crypto_box_secretkeybytes()
crypto_box_PUBLICKEYBYTES = lib.crypto_box_publickeybytes()
crypto_box_NONCEBYTES = lib.crypto_box_noncebytes()
crypto_box_ZEROBYTES = lib.crypto_box_zerobytes()
crypto_box_BOXZEROBYTES = lib.crypto_box_boxzerobytes()
crypto_box_BEFORENMBYTES = lib.crypto_box_beforenmbytes()


def crypto_box_keypair():
    """
    Returns a randomly generated public and secret key.

    :rtype: (bytes(public_key), bytes(secret_key))
    """
    pk = ffi.new("unsigned char[]", crypto_box_PUBLICKEYBYTES)
    sk = ffi.new("unsigned char[]", crypto_box_SECRETKEYBYTES)

    rc = lib.crypto_box_keypair(pk, sk)
    assert rc == 0

    return (