RESTRICTED TERMINAL

> CLEARANCE REQUIRED // CAPTURE THE FLAG

Note: this is a demonstration of cryptographic puzzle design, not a production security system. The flag is intentionally client-side — the challenge is the journey (Base64 → ROT13 → XOR), not hiding the answer. Viewing source is the easy-mode path.

STEP 01 — SIGNAL INTERCEPT

A base64-encoded transmission was intercepted. Decode it and enter the decoded plaintext.

HINT: This is standard Base64 encoding. Decode it to read the message.

STEP 02 — CIPHER ROTATION

The intercepted signal mentioned a cipher technique. Apply it to decode this message.

HINT: Step 1 told you which cipher to use. Apply that transformation.

STEP 03 — XOR DECRYPTION

A final transmission was intercepted. It has been XOR-encrypted with a repeating key. The key is the answer you decoded in Step 2.

HINT: XOR each byte of the hex cipher with the corresponding byte of the key (repeating). The key is your Step 2 answer.