What's the simplest way to encrypt multiple bits with LWE public key cryptosystem? Some paper say use a different secret key for each bit of the message. Does that mean the length of the message need to be agreed upon before transmission?

  • 2
    $\begingroup$ Could you post the link of some papers? $\endgroup$
    – kelalaka
    Mar 2 '20 at 8:00
  • $\begingroup$ Do you only want to do public-key operations, or do you care about FHE as well? The first case is rather simple, but the second may benefit from techniques like you're describing. $\endgroup$
    – Mark
    Mar 10 '20 at 21:06

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