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//opt/alt/python37/lib/python3.7/site-packages/beaker/crypto/pyca_cryptography.py

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"""Encryption module that uses pyca/cryptography"""

import os
import json

from cryptography.hazmat.backends import default_backend
from cryptography.hazmat.primitives.ciphers import (
    Cipher, algorithms, modes
)

def aesEncrypt(data, key):
    # Generate a random 96-bit IV.
    iv = os.urandom(12)

# Construct an AES-GCM Cipher object with the given key and a
    # randomly generated IV.
    encryptor = Cipher(
        algorithms.AES(key),
        modes.GCM(iv),
        backend=default_backend()
    ).encryptor()

# Encrypt the plaintext and get the associated ciphertext.
    # GCM does not require padding.
    ciphertext = encryptor.update(data) + encryptor.finalize()

return iv + encryptor.tag + ciphertext

def aesDecrypt(data, key):
    iv = data[:12]
    tag = data[12:28]
    ciphertext = data[28:]

# Construct a Cipher object, with the key, iv, and additionally the
    # GCM tag used for authenticating the message.
    decryptor = Cipher(
        algorithms.AES(key),
        modes.GCM(iv, tag),
        backend=default_backend()
    ).decryptor()

# Decryption gets us the authenticated plaintext.
    # If the tag does not match an InvalidTag exception will be raised.
    return decryptor.update(ciphertext) + decryptor.finalize()

has_aes = True

def getKeyLength():
    return 32

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Name	Size	Perms	Modified	Actions
__pycache__ DIR	-	drwxr-xr-x	2021-10-11 07:57:11	Edit Download recursive recursive
jcecrypto.py	1.27 KB	lrw-r--r--	2018-11-23 14:49:37	Edit Download recursive recursive
noencryption.py	182 B	lrw-r--r--	2018-11-23 14:49:37	Edit Download recursive recursive
nsscrypto.py	1.56 KB	lrw-r--r--	2018-11-23 14:49:37	Edit Download recursive recursive
pbkdf2.py	3.16 KB	lrw-r--r--	2018-11-23 14:49:37	Edit Download recursive recursive
pyca_cryptography.py	1.30 KB	lrw-r--r--	2018-11-23 14:49:37	Edit Download recursive recursive
pycrypto.py	984 B	lrw-r--r--	2018-11-23 14:49:37	Edit Download recursive recursive
util.py	432 B	lrw-r--r--	2018-11-23 14:49:37	Edit Download recursive recursive
__init__.py	2.38 KB	lrw-r--r--	2018-11-23 14:49:37	Edit Download recursive recursive

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