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Decrypt Laravel-encrypted value
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| # Python3 code below | |
| import os | |
| import base64 | |
| import json | |
| from Crypto.Cipher import AES | |
| from phpserialize import loads | |
| import hashlib | |
| import hmac | |
| def decrypt(payload): | |
| data = json.loads(base64.b64decode(payload)) | |
| key=os.environ['APP_KEY'] | |
| if not valid_mac(key, data): | |
| return None | |
| value = base64.b64decode(data['value']) | |
| iv = base64.b64decode(data['iv']) | |
| return unserialize(mcrypt_decrypt(value, iv, key)) | |
| def mcrypt_decrypt(value, iv, key): | |
| AES.key_size=128 | |
| crypt_object=AES.new(key=key,mode=AES.MODE_CBC,IV=iv) | |
| return crypt_object.decrypt(value) | |
| def unserialize(serialized): | |
| return loads(serialized) | |
| def valid_mac(key, payload): | |
| dig = hmac.new(key, digestmod=hashlib.sha256) | |
| dig.update(data['iv'].encode('utf8')) | |
| dig.update(data['value'].encode('utf8')) | |
| dig = dig.hexdigest() | |
| return dig==payload['mac'] |
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Traceback (most recent call last):
File "/var/www/html/adnsms/SMS-Shooting-Process/Helpers/crypt.py", line 40, in
decrypt(code)
File "/var/www/html/adnsms/SMS-Shooting-Process/Helpers/crypt.py", line 19, in decrypt
return mcrypt_decrypt(value, iv, key)
File "/var/www/html/adnsms/SMS-Shooting-Process/Helpers/crypt.py", line 24, in mcrypt_decrypt
crypt_object=AES.new(key=key,mode=AES.MODE_CBC,IV=iv)
File "/var/www/html/adnsms/SMS-Shooting-Process/venv/lib/python3.8/site-packages/Crypto/Cipher/AES.py", line 234, in new
return _create_cipher(sys.modules[name], key, mode, *args, **kwargs)
File "/var/www/html/adnsms/SMS-Shooting-Process/venv/lib/python3.8/site-packages/Crypto/Cipher/init.py", line 79, in _create_cipher
return modes[mode](factory, **kwargs)
File "/var/www/html/adnsms/SMS-Shooting-Process/venv/lib/python3.8/site-packages/Crypto/Cipher/_mode_cbc.py", line 274, in _create_cbc_cipher
cipher_state = factory._create_base_cipher(kwargs)
File "/var/www/html/adnsms/SMS-Shooting-Process/venv/lib/python3.8/site-packages/Crypto/Cipher/AES.py", line 92, in _create_base_cipher
if len(key) not in key_size:
TypeError: argument of type 'int' is not iterable
Hey Orian, I'm getting this error while trying to decrypt. Can you help me out please ?