cipher = AES.new(key, AES.MODE_CBC, iv) decrypted = cipher.decrypt(enc_data) # Remove PKCS#7 padding pad_len = decrypted[-1] decrypted = decrypted[:-pad_len]
openssl enc -d -aes-256-cbc -pbkdf2 -iter 10000 -in encrypted_tgz.bin -out decrypted.tar.gz If the passphrase is incorrect, OpenSSL will output garbage or an error ( bad decrypt ). Try alternative iterations (5000, 20000) if the default fails. Once decryption succeeds, you will have a standard .tar.gz file. Decompress it: decrypt localtgzve link
# Derive key (AES-256) salt = b'localtgzve_salt' # Fixed per spec key = PBKDF2(passphrase, salt, dkLen=32, count=10000) iv = hashlib.md5(key[:16]).digest() # Custom IV gen cipher = AES