def decrypt_data(encryption_key_bundle, payload):
from binascii import unhexlify
from base64 import b64decode
crypted_data = json.loads(payload)
cipher = AESCipher(key = encryption_key_bundle,
iv = crypted_data['IV'],
HMAC = unhexlify(crypted_data['hmac'])
)
decrypted_data = cipher.instantdecrypt(b64decode(crypted_data['ciphertext']))
return json.loads(decrypted_data.decode())
