This preview shows page 1. Sign up to view the full content.
Unformatted text preview: sungphsqluqlkicfupiqlksibbtqluiukspfbewujqqlpqiusutehuspskfuvpxu gfcuifupqlqlksbewujqybgvkhhdkfcpfufxuhbouvkqlpoikrukdybgauqqlkso ikruohupsuutpkhpigosblujpfquhhqluiusqbdqlujhpssfbqqbhbbzdbikqpsq lkstkalqcksigoqqluouisbfvlbvbizskfqlksbddkju 4) Encrypt the following message below using the affine cipher function, f(x) = (5x + 14) % 26. WEHAVEFINALLYFINISHEDTHEFIRSTWEEKOFCLASS 5) Consider a language with an alphabet size of 48. How many possible affine cipher keys could there be for this language? 6) Given that the encryption function for an affine cipher (in Spanish, with 30 alphabet characters) is f(x) = (13x + 4) % 30, determine the corresponding decryption function. Please show all of your work. 7) You are attempting to break an affine cipher. You believe that the ciphertext A maps to the plaintext letter e and that the ciphertext V maps to the plaintext t. Determine the encryption function used based on these two pieces of information....
View Full Document
This note was uploaded on 07/13/2011 for the course CIS 3362 taught by Professor Staff during the Fall '08 term at University of Central Florida.
- Fall '08
- Information Security