mirror of
https://github.com/markqvist/Reticulum.git
synced 2024-11-09 15:50:15 +00:00
57 lines
2.2 KiB
Python
57 lines
2.2 KiB
Python
# MIT License
|
|
#
|
|
# Copyright (c) 2022 Mark Qvist / unsigned.io
|
|
#
|
|
# Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
# of this software and associated documentation files (the "Software"), to deal
|
|
# in the Software without restriction, including without limitation the rights
|
|
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
# copies of the Software, and to permit persons to whom the Software is
|
|
# furnished to do so, subject to the following conditions:
|
|
#
|
|
# The above copyright notice and this permission notice shall be included in all
|
|
# copies or substantial portions of the Software.
|
|
#
|
|
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
|
# SOFTWARE.
|
|
|
|
import RNS.Cryptography.Provider as cp
|
|
|
|
if cp.PROVIDER == cp.PROVIDER_INTERNAL:
|
|
from .aes import AES
|
|
|
|
elif cp.PROVIDER == cp.PROVIDER_PYCA:
|
|
from cryptography.hazmat.primitives.ciphers import Cipher, algorithms, modes
|
|
|
|
|
|
class AES_128_CBC:
|
|
|
|
@staticmethod
|
|
def encrypt(plaintext, key, iv):
|
|
if cp.PROVIDER == cp.PROVIDER_INTERNAL:
|
|
cipher = AES(key)
|
|
return cipher.encrypt(plaintext, iv)
|
|
|
|
elif cp.PROVIDER == cp.PROVIDER_PYCA:
|
|
cipher = Cipher(algorithms.AES(key), modes.CBC(iv))
|
|
encryptor = cipher.encryptor()
|
|
ciphertext = encryptor.update(plaintext) + encryptor.finalize()
|
|
return ciphertext
|
|
|
|
@staticmethod
|
|
def decrypt(ciphertext, key, iv):
|
|
if cp.PROVIDER == cp.PROVIDER_INTERNAL:
|
|
cipher = AES(key)
|
|
return cipher.decrypt(ciphertext, iv)
|
|
|
|
elif cp.PROVIDER == cp.PROVIDER_PYCA:
|
|
cipher = Cipher(algorithms.AES(key), modes.CBC(iv))
|
|
decryptor = cipher.decryptor()
|
|
plaintext = decryptor.update(ciphertext) + decryptor.finalize()
|
|
return plaintext
|