Maurice Tutor

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About Maurice Tutor

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Expertise:
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Algebra,Applied Sciences,Biology,Calculus,Chemistry,Economics,English,Essay writing,Geography,Geology,Health & Medical,Physics,Science Hide all
Teaching Since: May 2017
Last Sign in: 305 Weeks Ago, 5 Days Ago
Questions Answered: 66690
Tutorials Posted: 66688

Education

  • MCS,PHD
    Argosy University/ Phoniex University/
    Nov-2005 - Oct-2011

Experience

  • Professor
    Phoniex University
    Oct-2001 - Nov-2016

Category > Communications Posted 24 Sep 2017 My Price 5.00

Random monoalphabet cipher.

Random monoalphabet cipher. The Caesar cipher, which shifts all letters by a fixed amount, is far too easy to crack. Here is a better idea. For the key, don’t use numbers but words. Suppose the key word is FEATHER. Then first remove duplicate letters, yielding FEATHR, and append the other letters of the alphabet in reverse order.

Now encrypt the letters as follows:

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Write a program that encrypts or decrypts a file using this cipher. The key word is specified with the -k command line option. The -d command line option specifies decryption. For example,

java Encryptor -d -k FEATHER encrypt.txt output.txt

decrypts a file using the keyword FEATHER. It is an error not to supply a keyword.

Answers

Maurice Tutor
(5)
Status NEW Posted 24 Sep 2017 11:09 AM My Price 5.00

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