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CS52600 (November (Identification Verification (Bio-metrics (E.g.…

- - - - IMSI (phone ID) >>>
        
        R = 128-bit random number (the challenge) <<<
        
        E_k(R) = the 128-bit random number encrypted using the subscriber's secret key K >>>
    - - Radio frequency identification: is a rapidly emerging technology that relies on small transponders to transmit identification information via radio waves.
      - For Passport
        
        No battery required
        
        All RFID are encrypted with a secret key
    - - Univerality
      - Distinctiveness
      - Permanance
      - Collectability
      - E.g.
        
        Fingerprints
        
        Retina / iris scans
        
        DNA
        
        "Blue-ink" Signature
        
        Voice/Face/Gait Recognition
- - - - Forced Equivalence
        
        Constant time code
        
        :smiley_cat: Can make a lot of money
        
        Even in C code level is hard
        
        The if-statement and branching makes thigns hard
      - Blinding
        
        Canceling out the factors with the randomness after the computation finished.
        
        Cipher texts been permuted
        
        Most commonly deployed
      - Leakage resilient cryptography
    - - SSH keystroke timing
        
        When connected to a computer over SSH, everytime you press a key on the keyboard it is sent to the server.
        
        Timing attack on the typing speed
        
        Solution
        
        Fixed (constant) timeing
        
        Reference to everything (interaction) based on the typing speed.
      - Cold Boot Attack
        
        Attacker's goal: reboot the machine into an OS that he or she controls to look at memory contents.
        
        Challenge: memory loses state without power
        
        How does this works?
        
        Works against:
        
        Microsoft BitLocker
        
        Solution:
        
        Temperature detector