'How do I keep grabbing bytes and encrypting them in Python?

cipher = Cipher(algorithms.AES(key), modes.CTR(iv))
decryptor = cipher.decryptor()
plaintext = decryptor.update(data[0:4]) 
paramEntry1 = int.from_bytes(plaintext,'big')
print(paramEntry1)

decryptor.update(data[0:4]) How do I go about making this keep pulling 4 bytes out of the file? I have it in a loop but its #giving me the same results?



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