Quick Tips

  • Cryptography is the science of protecting information by encoding it into an unreadable format.

  • The most famous rotor encryption machine is the Enigma used by the Germans in WWII.

  • A readable message is in a form called plaintext, and once it is encrypted, it is in a form called ciphertext.

  • Cryptographic algorithms are the mathematical rules that dictate the functions of enciphering and deciphering.

  • Cryptanalysis is the study of breaking cryptosystems.

  • Nonrepudiation is a service that ensures the sender cannot later falsely deny sending a message.

  • Key clustering is an instance in which two different keys generate the same ciphertext from the same plaintext.

  • The range of possible keys is referred to as the keyspace. A larger keyspace and the ...

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