1. Encrypt the message " MATH " by translating the letters into numbers and then applying the encryption function given, and then translating the numbers back into letters. (a) f(p)= (19p+2) mod 26 (b) f(p) = (5p + 10) mod 26 Ke f(p) = (7p + 7) mod 26 Use A = 0.B = 1C = 2.D= 3 E = 4F = 5,G= 6.H 7.I = 8, J = 9.K = 10 L= 11 M = 12.N = 13.0 14.P 15.0= 16.R = 17. S= 18 T = 19.U =2 Suboir answer

please send step by step handwritten solution for Q4

Encrypt the message " MATH " by translating the letters into numbers and then applying the encryption function given, and then translating the numbers II back into letters. (a) f(p) = (17p+ 3) mod 26 (b) f(p) = (5p +14) mod 26 (c) f(p) = (19p+ 4) mod 26 Use A = 0,B = 1,C = 2,D = 3,E = 4,F = 5,G = 6,H = 7,1 = 8, J = 9, K = 10,L = 11,M = 12,N = 13,0 = 14,P = 15,Q = 16,R = 17, S = 18, T = 19,U = 20,V = 21,W = 22,X = 23,Y = 24,Z = 25 %3D %3D

Decode the number using the given private key. Decode the number M = 38 using the private key d = 17 and n = 77. Assume you are decoding the number using the RSA cryptosystem. Note: You can use the Modular Exponentiation calculator to help with the calculation.