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| Teaching Since: | May 2017 |
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MCS,PHD
Argosy University/ Phoniex University/
Nov-2005 - Oct-2011
Professor
Phoniex University
Oct-2001 - Nov-2016
1.Using the hash function described in this section, verify that the password “chjbup5” also hashes to “gb”.
2. Using a Caesar cipher with s = 5, encrypt the message NOW IS THE HOUR.
3 A messenger tells you that the secret key for today for the Caesar cipher is s = 26. Should you trust the messenger? Why, or why not?
4. You receive a message “17” that was sent using the RSA public encryption key (21, 5) of the example in this section. Decode this to find the original numeric message. (You might want to use a spreadsheet to help with this computation.)
Hel-----------lo -----------Sir-----------/Ma-----------dam----------- ----------- -----------Tha-----------nk -----------You----------- fo-----------r u-----------sin-----------g o-----------ur -----------web-----------sit-----------e a-----------nd -----------acq-----------uis-----------iti-----------on -----------of -----------my -----------sol-----------uti-----------on.-----------Ple-----------ase----------- pi-----------ng -----------me -----------on -----------cha-----------t I----------- am----------- on-----------lin-----------e o-----------r i-----------nbo-----------x m-----------e a----------- me-----------ssa-----------ge -----------I w-----------ill----------- be----------- ca-----------tch-----------