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Chapter 6 Cryptography and Symmetric Key Algorithms

  • Modulo function is the remainder value left over after a division operation is performed

Written Lab

  1. What is the major hurdle preventing the widespread adoption of one-time pad cryptosystems to ensure data confidentiality?

    The major hurdle preventing the widespread adoption of one-time pad is the difficulty of generating, distributing, and safeguarding the lengthy keys required.

    OR

    The major hurdle preventing the widespread adoption of one-time pad is the difficulty in creating and distributing the very lengthy keys on which the algorithm depends.

  2. Encrypt the message "I will pass the CISSP exam and become certifid next month" using columnar transposition with the keyword SECURE.

    ISSMCRDOWSIAEEEMPEEDEFXHLHPHMIETIACXBCITLTSAOTNN

  3. Decrypt the message "FRQJUDWXODWLRQVBRXJRWLW" using the Caeasar ROT3 substitution cipher.

    CONGRATULATIONS YOU GOT IT