decode.py

from Crypto.Cipher import AES
from base64 import b64encode, b64decode

hdr = b'To your eyes only'
plaintext = b'Attack at dawn'
key = b'Sixteen byte key'
cipher = AES.new(key, AES.MODE_CCM)
cipher.update(hdr)
msg = cipher.nonce, hdr, cipher.encrypt(plaintext), cipher.digest()


from Crypto.Cipher import AES
from base64 import b64encode, b64decode

msg = (b'\x1f\xaa@\xfd\xe4\xb3\x82\x15\x18\x95k', b'To your eyes only', b'\xe9\xd5\x11o8\xafJ\xe6w\xab\x8e~\x9f\\', b'\xa9\x04D\x92\x9f\xf1sg\xa6\xfc}\x83\xdf9a\xf2')
nonce, hdr, ciphertext, mac = msg
cipher64 = b64encode(ciphertext).decode('ascii')
print('cipher64, ciphertext -->', cipher64, ciphertext)




key = b'Sixteen byte key'
cipher = AES.new(key, AES.MODE_CCM, nonce)
cipher.update(hdr)
plaintext = cipher.decrypt(b64decode(cipher64))

print('plain decoded --->', plaintext)


from cryptography.fernet import Fernet
from base64 import b64encode, b64decode
#cipher_key = Fernet.generate_key()
cipher_key = b'fFN0T6t8bHDfPePpdj1IGLS-Jmji4uNoiv_jaO2v1N8='
cipher_key64 = b64encode(cipher_key).decode('ascii')
cipher_key64
cipher = Fernet(b64decode(cipher_key64))
text = b'My super secret message'
encrypted_text = cipher.encrypt(text)
encrypted_text
decrypted_text = cipher.decrypt(encrypted_text)
decrypted_text


KEY = 'ZkZOMFQ2dDhiSERmUGVQcGRqMUlHTFMtSm1qaTR1Tm9pdl9qYU8ydjFOOD0='

class RepositoryEnv(RepositoryEmpty):
    """
    Retrieves option keys from .env files with fall back to os.environ.
    """

    def __init__(self, source):
        self.data = {}

        with open(source) as file_:
            for line in file_:
                line = line.strip()
                if not line or line.startswith('#') or '=' not in line:
                    continue

                decode = re.search(r'^([^=]+)=(.*)_\[>(.+)<\]_(.*)$', line)
                if decode:
                    k, p, d, n = decode.groups()
                    d = Fernet(b64decode(KEY)).decrypt(b64decode(d)).decode('utf8')
                    v = p + d + n
                else:
                    k, v = line.split('=', 1)
                    
                k = k.strip()
                v = v.strip().strip('\'"')
                
                self.data[k] = v

    def __contains__(self, key):
        return key in os.environ or key in self.data

    def __getitem__(self, key):
        return self.data[key]
      

from cryptography.fernet import Fernet
from base64 import b64encode, b64decode
cipher_key = b'fFN0T6t8bHDfPePpdj1IGLS-Jmji4uNoiv_jaO2v1N8='
cipher_key64 = b64encode(cipher_key).decode('ascii')
cipher = Fernet(b64decode(cipher_key64))
text = b'Apli.0118.prod'
encrypted_text = cipher.encrypt(text)
encrypted_text
b'gAAAAABb8rZDXHjh6jAbaaaIm_XD1uKP8I2rtB8r3rqBbOLTetsU9g6WpFkRQ6tuJjAMoCXCiCeiuQyUiWmwUWIWD_5E6JpE5A=='
b64encode(encrypted_text)
b'Z0FBQUFBQmI4clpEWEhqaDZqQWJhYWFJbV9YRDF1S1A4STJydEI4cjNycUJiT0xUZXRzVTlnNldwRmtSUTZ0dUpqQU1vQ1hDaUNlaXVReVVpV213VVdJV0RfNUU2SnBFNUE9PQ=='