Module bb84 

BB84 Quantum Key Distribution protocol simulation.

Implements the Bennett-Brassard 1984 (BB84) QKD protocol with:

• Alice’s qubit preparation in rectilinear (Z) and diagonal (X) bases
• Optional eavesdropping by Eve (intercept-resend attack)
• Depolarizing channel noise
• Bob’s measurement in random basis
• Sifting: retain bits where Alice and Bob chose the same basis
• Quantum bit error rate (QBER) estimation from a sample
• Privacy amplification via XOR hashing to half the sifted key length
• Eavesdrop detection: qber > 0.10

Structs

Bb84Protocol

BB84 Quantum Key Distribution protocol.

Bb84Result

Result of running the BB84 protocol.