Consider the RSA encryption algorithm with p = 59, q = 47, e = 15. 1. What is the public key? 2. What is the private key?

Let k be the encipherment key for a Caesar cipher. The decipherment key is 26 – k.One of the characteristics of a public key cryptosystem is that the encipherment anddecipherment keys are different. Explain why the Caesar cipher is a secret keycryptosystem, not a public key cryptosystem?

DONT use AI, USE pencil and paper. Consider the RSA encryption scheme with a modulus n = 101 * 113, where 101 and 113 are prime numbers. You are given two potential RSA encryption exponents, e1 = 8765 and e2 = 7653. Determine which of e1 and e2 is a valid RSA encryption exponent for the given modulus n. Show all steps and Justify your answer. Note: You can use a calculator to perform the calculations involving large numbers.

In RSA encryption, if the public key is 299, what is the private key? (Enter your answers as a comma-separated list.)

Let the encryption keyword of a monoalphabetic cipher be ROME.   (a) Show the encryption key in the table form.   (b) Show the decryption key in the table form.   (c) Obtain ciphertext for the following message sentence: Rome wasn’t built in a day.

Show, using worked out examples, that for RSA, PB(PR(M))=M and  PR(PB(M))=M, where PB, PR and M, respectively are the public key, the private key, and the plaintext. Design the keys using prime numbers 11 and 17.

Part 2: Perform encryption and decryption using the RSA algorithm for the following. Show all your steps. 1. p = 3;q=11, e = 7; M = 5 2. p=5;q=11, e = 3; M = 9

Alice and Bod have decided to use a symmetric encryption algorithm. They have some assumptions about their messages:- Messages only contain capital letters (i.e. A to Z)- The length of their shared key must be greater than or equal to the length of the plaintext- They assign each letter a number as follows: (A,0), (B,1), (C,2), (D,3),…, (Z,25)Their algorithm combines the key and the message using modular addition. The numerical values of corresponding message and key letters are added together, modulo 26. For example, if the plain text is “HELLO” and the key is “SECRET” then the encrypted message is calculated as following:Since the length of the plaintext is 5, we just need the first 5 letters of the key (i.e. “SECRE”), then for each letter, we should add corresponding letters in both the plaintext and the key modulo 26.Plaintext: H (7) E (4) L (11) L (11) O (14)Key: S (18) E (4) C (2) R (17) E(4)Cipher: Z (25) I (8) N(13) C(2) S (18) Write a program in Python, C/C++ or JavaScript to…

Perform Encryption and decryption using the RSA algorithm for the following: a. p=5; q = 11; e = 3; M = 12 b. p= 3; q = 17; e = 7; M = 2 c. p=7; q = 19; e = 11; M = 5 d. p= 7; q = 13; e = 11; M = 8 e. p= 13; q = 23; e = 5; M = 10

You witness Alice and Bob agree on a secret key using the Diffie-Hellman key exchange. Alice andBob chose p = 97 and g = 5. Alice send Bob the number 3 and Bob sent Alice the number 7. Bruteforce crack their code: What is the secret key that Alice and Bob agreed upon? What were theirsecret keys?