Unsupported key for oneplus.ops (SHA256: 9B282E90...)

[Arshan625]

Steps to reproduce:

1. Downloaded repo (oppo_decrypt v1.4)
2. Installed requirements
3. Ran: python opscrypto.py decrypt "C:\msm\oneplus.ops" --extractdir="F:...extracted"

Output:
Oneplus CryptTools V1.4 (c) B. Kerler 2019-2021
Extracting C:/msm/oneplus.ops
Unsupported key !

File SHA256: 9B282E9038E5296C32CF6D8372D86D43A2BAC8D804D569A5A41FBB952D86CA08

Device/firmware info:

• OnePlus 8T KB2007
• Package E.12 (200918)
• Tools used on Windows, Python 3.13

Please let me know how to resolve this?