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3 Cards in this Set

  • Front
  • Back

What happens under Perfect Encryption Hypothesis?

Cryptograms can only be decrypted under the decryption key


Nonces or secret keys cannot be guessed


(All regardless of the computational power of the attacker)


Different messages = different Cryptogram


Different key = different Cryptogram

The Dolev-Yao intruder model?

Interferes in all communications


Knows all "public information


(Stores all sent messages)


Generate nonces and keys


Shuffle and change messages


Activate arbitrary participants


Worst case scenario

What can a nonce also act as?

A timestamp