What are digital signatures used for? (Choose all that apply.)
A. Encryption
B. Authentication
C. Nonrepudiation
D. Authorization
E. Hashing
Answer:
BC
Explanation
A. Incorrect: Encryption is not a valid reason for digital signing.
B. Correct: Authentication is a reason for digital signing because it uniquely defines the party signing the data.
C. Correct: Nonrepudiation is a reason for digital signing because it uniquely defines the party signing the data and shows that it had to be the original party that submitted the data.
D. Correct: Authorization can be determined after the individual is uniquely defined.
E. Incorrect: Hashing is not a valid reason for digital signing.