Encrypt the message VA using the function f (p) = (p + 7) mod 26.Select one:a.ALb.CHc.None of the othersd.DMe.BK

Write a program to perform encryption and decryption using wrapper class Encryption phase with shift n = En (x) = (x+n)mod 26Decryption phase with shift n = Dn (x) = (x-n)mod 26

Which cipher makes use of modular arithmetic with a modulus of 26 and is the simple cipher based on mono-alphabetic?AShiftBAdditiveCTranspositionDNone the above

Write a program to perform encryption and decryption using wrapper class Encryption phase with shift n = En (x) = (x+n)mod 26Decryption phase with shift n = Dn (x) = (x-n)mod 26ExamplesText : ABCDEFGHIJKLMNOPQRSTUVWXYZShift : 23Cipher : XYZABCDEFGHIJKLMNOPQRSTUVWinput-output format Text : ATTACKATONCE(input)Shift : 4(input)Cipher : EXXEGOEXSRGI(output)ATTACKATONCE

Decrypt 74: 𝐶 ′ = 74 ⋅ 7   ( mod  59 ) = 518   ( mod  59 ) = 46 C ′ =74⋅7 (mod 59)=518 (mod 59)=46 Using the superincreasing sequence ( 2 , 3 , 7 , 15 , 29 ) (2,3,7,15,29): 46 − 29 = 17 17 − 15 = 2 46−29=17 17−15=2

1. Suppose pseudo-random numbers are produced by using: xn+1 = (3xn + 11) mod 13. If x3=5, find x2 and x4.2. Suppose pseudo-random numbers are produced by using: xn+1 = (2xn + 7) mod 9.a) If x0 = 1, find x2 and x3 b) If x3 = 3, find x2 and x4.3. Using the function f(x) = (x + 10) mod 26 to encrypt messages. Answer each of thesequestions.a) Encrypt the message STOP b) Decrypt the message LEI4. Which memory locations are assigned by the hashing function h(k) = k mod 101 to therecords of insurance company customers with these Social Security Numbers?a) 104578690 b) 4322221875. Use the Euclidean algorithm to finda) gcd(14, 28) b) gcd(8, 28) c) gcd(100, 101) d) gcd(28,35)e) lcm(7, 28) f) lcm(12, 28) g) lcm(100, 101) h) lcm(28,35)