Recent content by anthonyhk7

i have try my best to read the notes and google, but until some steps don't know how to process the following parts such as step 4... 1. Select primes p=11, q=3. 2. n = pq = 11.3 = 33 phi = (p-1)(q-1) = 10.2 = 20 3. Choose e=3 Check gcd(e, p-1) = gcd(3, 10) = 1 (i.e. 3 and...

urgent 《Internet Infrastructure Security》 1. (Affine Cipher) Recall that the encryption function for the Affine Cipher is EK(m) = (a × m + b) mod 26. Moreover, not all values in {0, 1, · · · , 25} can be used for a. To illustrate it, consider a = b = c = 10. Explain why a = 10 cannot be used...