- Cryptograpghy

Q2: Select all correct answer in the following: (3 Points) 1. Which of the following ciphertext could not be encrypted by Playfair algorithm: a. ADGAXBCEBXAKFLZ b. AKCLBFEECLLBKX c. AFGHCKKBKBFGYL d. XYZKABCKKBYZFO e. None of the above 2. The following ciphertext XABCYSTUMNYJKS could be encrypted by using: a. Hill cipher b. Play fair c. Caesar cipher d. None of the above 3. In Hill cipher symmetric the decryption key is: a. Same as encryption key b. Same as encryption key modular x c. The identity 3x3 matrix d. None of the above