Cryptography, like digital signatures, is used to accomplish nonrepudiation, which also includes services for authentication, auditing, and logging.
Digital signatures in online transactions make assurance that a party cannot later dispute the sending of information or the validity of its signature. Alice can encrypt the communication using her own Private Key. As a result, only her public key, which she is aware Bob (and everyone else) has access to, may be used to decrypt her message. Bob receives the message, and he uses Alice's public key to decrypt it. Secret key cryptography (symmetric encryption): To encrypt and decrypt given messages, both the sender and the receiver must use the same key.
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Solution :
It is given that Lael always looks out for the students who are interested in running for the office in a student group.
We use an excel sheet to determine whether a student had already elected to the office of the student group or not.
The formula used for the excel sheet used is :
K L M N
Elected group Finance certificate
Yes Yes Yes
No Yes Yes
No No No
Answer: Natural user interface(NUI)
Explanation: Natural user interface( NUI) is a interface that is created among the user and the operating system which is in the invisible form while the client follows being in the interactions that are having the complexity. Rapid change of novice node to the expert node is the main feature of the natural user interface when it comes starts doing it's function.
