BB84 QKD — Intercept-Resend Attack
Eavesdropper detection: quantum bit error rate vs. intercept probability
Protocol Settings
Key length N =
64
bits
Intercept fraction p_e =
0.50
Channel noise p_noise =
0.01
▶ Run Protocol
Results
Sifted key bits
--
QBER
--
Eve detected?
--
Secret key rate
--
QBER threshold for detection: 11%
Full intercept → QBER ≈ 25%