Just a small personal project of mine, but I'm running into a snag and I'm wondering if I'm going about this properly. I'm using aes-ctr and passing the rightsId as the iv and various titlekeks from my switch, but I'm not getting the expected result. Is there anything obviously wrong with my method?
code w/ edited out keys
code w/ edited out keys
from Crypto.Cipher import AES
from Crypto.Util import Counter
titlekek = b'\x00\x00\x00...' # Replace with actual titlekek (16 bytes for AES-128)
encrypted_title_key = b'\x00\x00\x00...' # Replace with actual encrypted title key
iv = b'\x00\x00\x00...' # Replace with actual rightsId
# Set up AES-CTR mode with the IV as the counter
ctr = Counter.new(128, initial_value=int.from_bytes(iv, byteorder='big'))
cipher = AES.new(titlekek, AES.MODE_CTR, counter=ctr)
# Decrypt and convert to hexadecimal
decrypted_title_key = cipher.decrypt(encrypted_title_key)
hex_decrypted_title_key = decrypted_title_key.hex()
print("Decrypted Title Key (Hex):", hex_decrypted_title_key)
