Kaikey 作者： SeungJong Ha

Kaikey is a helper extension for users who already have a KAIST account and have completed KAIST's official 2FA
enrollment. It is not affiliated with, endorsed by, or operated by KAIST.

Kaikey has no backend server. All data stays in your browser's local storage; the extension only talks to KAIST's
own servers.

What it does
After you complete KAIST's standard 2FA registration in your own browser, you upload a screenshot of the
registration QR code into this extension. Kaikey decodes the code and finishes the same registration handshake that
the official mobile app would, so the resulting key is stored locally in your browser instead of on a phone.

Once registered, when you sign in to a KAIST service:
- On the KAIST SSO login page, Kaikey can fill in your KAIST ID and submit the form.
- On the 2FA challenge page, Kaikey reads the two-digit code that the page itself displays, asks the KAIST
authentication server for the pending challenge, and only approves the request if the digits match.
- On the KAIST KLMS SSO redirect page, Kaikey can follow the standard login link.

Auto-login can be turned off from the popup, in which case approvals are done manually by selecting the matching
number in the popup.

What it does not do
- It does not send your data to any third party. All registration and approval calls go directly to KAIST's own
SSO/auth endpoints, the same ones the official app uses.
- It does not bypass 2FA. Approval requires a valid challenge from KAIST and a digit match.
- It does not store your KAIST password. Only the per-device key from your own 2FA registration is stored locally.

Required permissions and why
- storage — to keep your registered device key and your auto-login preference in extension-local storage.
- scripting and activeTab — to run a small function inside KAIST SSO pages that triggers the page's own login button
when auto-login is enabled.
- Host permission for sso.kaist.ac.kr and klms.kaist.ac.kr — these are the only sites the extension reads or
interacts with.

Kaikey is open source. Source code: https://github.com/predict-woo/kaikey-extension