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

none of the above options are true.

Explanation:

option with M at the end are exluded beacuse M is message and it cannot be send openly so option a,d,e,f,g cannot be options

the option b and c includes with  Alice private key Apr which alice cannot send to any individual so these options are also excluded

since it can be assumed that what aslam is making is a template by compiling all the commonly used excel formatting in several worksheets in an excel document, aslam can choose to save it using the .xltx or .xltm format instead. thus, aslam can distribute the templates he has made to his team members in an easier manner.

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