from base64 import standard_b64encode, standard_b64decode

import nacl.bindings
import nacl.utils
from nacl.secret import SecretBox

from pymacaroons.field_encryptors.base_field_encryptor import (
    BaseFieldEncryptor
)
from pymacaroons.utils import (
    truncate_or_pad, convert_to_bytes, convert_to_string
)


class SecretBoxEncryptor(BaseFieldEncryptor):

    def __init__(self, signifier=None, nonce=None):
        super(SecretBoxEncryptor, self).__init__(
            signifier=signifier or 'sbe::'
        )
        self.nonce = (nonce or
            nacl.utils.random(nacl.bindings.crypto_secretbox_NONCEBYTES))

    def encrypt(self, signature, field_data):
        encrypt_key = truncate_or_pad(signature)
        box = SecretBox(key=encrypt_key)
        encrypted = box.encrypt(convert_to_bytes(field_data), nonce=self.nonce)
        return self._signifier + standard_b64encode(encrypted)

    def decrypt(self, signature, field_data):
        key = truncate_or_pad(signature)
        box = SecretBox(key=key)
        encoded = convert_to_bytes(field_data[len(self.signifier):])
        decrypted = box.decrypt(standard_b64decode(encoded))
        return convert_to_string(decrypted)

from base64 import standard_b64encode, standard_b64decode

import nacl.bindings
import nacl.utils
from nacl.secret import SecretBox

from pymacaroons.field_encryptors.base_field_encryptor import (
    BaseFieldEncryptor
)
from pymacaroons.utils import (
    truncate_or_pad, convert_to_bytes, convert_to_string
)


class SecretBoxEncryptor(BaseFieldEncryptor):

    def __init__(self, signifier=None, nonce=None):
        super(SecretBoxEncryptor, self).__init__(
            signifier=signifier or 'sbe::'
        )
        self.nonce = nonce or nacl.utils.random(
            nacl.bindings.crypto_secretbox_NONCEBYTES
        )

    def encrypt(self, signature, field_data):
        encrypt_key = truncate_or_pad(signature)
        box = SecretBox(key=encrypt_key)
        encrypted = box.encrypt(convert_to_bytes(field_data), nonce=self.nonce)
        return self._signifier + standard_b64encode(encrypted)

    def decrypt(self, signature, field_data):
        key = truncate_or_pad(signature)
        box = SecretBox(key=key)
        encoded = convert_to_bytes(field_data[len(self.signifier):])
        decrypted = box.decrypt(standard_b64decode(encoded))
        return convert_to_string(decrypted)

Break how flake8 wants me to break
Break how flake8 wants me to break

  from base64 import standard_b64encode, standard_b64decode
  
  import nacl.bindings
  import nacl.utils
  from nacl.secret import SecretBox
  
  from pymacaroons.field_encryptors.base_field_encryptor import (
      BaseFieldEncryptor
  )
  from pymacaroons.utils import (
      truncate_or_pad, convert_to_bytes, convert_to_string
  )
  
  
  class SecretBoxEncryptor(BaseFieldEncryptor):
  
      def __init__(self, signifier=None, nonce=None):
          super(SecretBoxEncryptor, self).__init__(
              signifier=signifier or 'sbe::'
          )
-         self.nonce = (nonce or
+         self.nonce = nonce or nacl.utils.random(
-             nacl.utils.random(nacl.bindings.crypto_secretbox_NONCEBYTES))
+             nacl.bindings.crypto_secretbox_NONCEBYTES
+         )
  
      def encrypt(self, signature, field_data):
          encrypt_key = truncate_or_pad(signature)
          box = SecretBox(key=encrypt_key)
          encrypted = box.encrypt(convert_to_bytes(field_data), nonce=self.nonce)
          return self._signifier + standard_b64encode(encrypted)
  
      def decrypt(self, signature, field_data):
          key = truncate_or_pad(signature)
          box = SecretBox(key=key)
          encoded = convert_to_bytes(field_data[len(self.signifier):])
          decrypted = box.decrypt(standard_b64decode(encoded))
          return convert_to_string(decrypted)
  
Break how flake8 wants me to break
## Code Before:
from base64 import standard_b64encode, standard_b64decode

import nacl.bindings
import nacl.utils
from nacl.secret import SecretBox

from pymacaroons.field_encryptors.base_field_encryptor import (
    BaseFieldEncryptor
)
from pymacaroons.utils import (
    truncate_or_pad, convert_to_bytes, convert_to_string
)


class SecretBoxEncryptor(BaseFieldEncryptor):

    def __init__(self, signifier=None, nonce=None):
        super(SecretBoxEncryptor, self).__init__(
            signifier=signifier or 'sbe::'
        )
        self.nonce = (nonce or
            nacl.utils.random(nacl.bindings.crypto_secretbox_NONCEBYTES))

    def encrypt(self, signature, field_data):
        encrypt_key = truncate_or_pad(signature)
        box = SecretBox(key=encrypt_key)
        encrypted = box.encrypt(convert_to_bytes(field_data), nonce=self.nonce)
        return self._signifier + standard_b64encode(encrypted)

    def decrypt(self, signature, field_data):
        key = truncate_or_pad(signature)
        box = SecretBox(key=key)
        encoded = convert_to_bytes(field_data[len(self.signifier):])
        decrypted = box.decrypt(standard_b64decode(encoded))
        return convert_to_string(decrypted)

## Instruction:
Break how flake8 wants me to break
## Code After:
from base64 import standard_b64encode, standard_b64decode

import nacl.bindings
import nacl.utils
from nacl.secret import SecretBox

from pymacaroons.field_encryptors.base_field_encryptor import (
    BaseFieldEncryptor
)
from pymacaroons.utils import (
    truncate_or_pad, convert_to_bytes, convert_to_string
)


class SecretBoxEncryptor(BaseFieldEncryptor):

    def __init__(self, signifier=None, nonce=None):
        super(SecretBoxEncryptor, self).__init__(
            signifier=signifier or 'sbe::'
        )
        self.nonce = nonce or nacl.utils.random(
            nacl.bindings.crypto_secretbox_NONCEBYTES
        )

    def encrypt(self, signature, field_data):
        encrypt_key = truncate_or_pad(signature)
        box = SecretBox(key=encrypt_key)
        encrypted = box.encrypt(convert_to_bytes(field_data), nonce=self.nonce)
        return self._signifier + standard_b64encode(encrypted)

    def decrypt(self, signature, field_data):
        key = truncate_or_pad(signature)
        box = SecretBox(key=key)
        encoded = convert_to_bytes(field_data[len(self.signifier):])
        decrypted = box.decrypt(standard_b64decode(encoded))
        return convert_to_string(decrypted)
