Alice wants to sign a long message M to Bob. Which one of the following is sent by Alice to Bob. Let Apk: Alice's public key Apr: Alice's private key Bpk: Bob's pu nonrepudiation. You selected this answer. Bpr: Bob's private key ECM, K): Encryption the message M with the key K DCM, K): Decryption the message M with the key K HCM): Hash value of M Z(M): Compressed value (maximum 10 percent of the original message) (Select all that apply.) a. A->B:H(E(M, Apk)),M b. A->B: E(E(M, Apr), Bpk) c. A->B: Z(E(M, Apr), Bpk) d. A->B: E(H(M),Apr),M. e. A->B: H(E(M, Apr)),M f. A->B: E(H(M),Apk),M e. A->B: E(Z(M),Apk),M

Write a modular program (no classes yet, just from what you learned last year), that allows two players to play a game of tic-tac-toe. use a two-dimensional char array with 3 rows and 3 columns as the game board. each element of the array should be initialized with an asterisk (*). the program should display the initial board configuration and then start a loop that does the following: allow player 1 to select a location on the board for an x by entering a row and column number. then redisplay the board with an x replacing the * in the chosen location. if there is no winner yet and the board is not yet full, allow player 2 to select a location on the board for an o by entering a row and column number. then redisplay the board with an o replacing the * in the chosen location. the loop should continue until a player has won or a tie has occurred, then display a message indicating who won, or reporting that a tie occurred. player 1 wins when there are three xs in a row, a column, or a diagonal on the game board. player 2 wins when there are three ox in a row, a column, or a diagonal on the game board. a tie occurs when all of the locations on the board are full, but there is no winner. input validation: only allow legal moves to be entered. the row must be 1, 2, or 3. the column must be 1, 2 3. the (row, column) position entered must currently be empty (i.e., still have an asterisk in it).