Quantum Cryptography Quiz

What is the primary use of SSL and TLS?

• Session caching and handshake protocol

• Encryption and authentication

• Data compression and data integrity checks

• Record protocol and handshake protocol

What is the function of a qubit in quantum mechanics?

• It can be 0 or 1 simultaneously

• It can be 0 or 1 separately

• It can only be 0

• It can only be 1

What is the purpose of a certificate authority (CA) in SSL/TLS?

• To authenticate users using digital certificates

• To establish a secure link between client and server

• To encrypt data over the internet

• To generate a digital certificate for website owners

How does quantum cryptography use photons to transmit encryption keys?

• By using beam splitters and photon detectors

• By sending photons through random polarisers

• By altering the polarisation of light

• By compressing data being transmitted

What is the main advantage of using TLS over SSL?

• It separates the handshaking process from the record protocol

• It can extend authentication methods unlike SSL

• It can establish a new session without session caching

• It provides encryption, authentication, and data integrity more effectively

What is the limitation of quantum cryptography in terms of range?

• 100 km

• 1000 km

• 500 km

• 250 km

What is the role of session caching in TLS?

• It establishes a secure link between client and server

• It encrypts the data being transmitted

• It authenticates users using digital certificates

• It avoids the need to utilise as much computer time for each connection

How does an eavesdropper find it almost impossible to read the encryption key in quantum cryptography?

• By extending TLS with new authentication methods

• By using beam splitters and photon detectors

• By altering the polarisation of light

• Due to the secure system generated by quantum cryptography

What is the function of a beam splitter in the QKD protocol?

• To choose at random between two beam splitters

• To generate a sequence of random bits

• To establish a secure link between sender and recipient

• To send photons through random polarisers

What is the significance of the recipient sending back the sequence of beam splitters used in quantum cryptography?

• To authenticate the sender

• To establish a new session key

• To alter the encryption key

• To compare with the polarisation sequence used at the sending station