Question

Which of the following situations is made possible thanks to public key encryption?
A. A customer enters their credit card number on a website, and the server securely receives the number without the possibility of cybercriminals seeing the
credit card number
B. A social media user posts an update and marks it as "friends only", enabling only their friends to see the update.
C. A company with medical data stores the health records securely in an interal database, such that engineers need a specific password to unlock them
D. A user browses a shopping website using the incognito mode of their browser, preventing the shopping website from tracking their usage and using that
for future advertising

Answer 1

The situation that has been made possible thanks to public key encryption is A customer enters their credit card number on a website, and the server securely receives the number without the possibility of cybercriminals seeing the credit card number.

What is a public key in encryption?

Public key encryption is also called  public key cryptography. This is known to be a method of encrypting data through the use of two kinds of keys and then using one of the keys as a public key, which can be made available for anybody to use while the other key is said to be a private key.

Note that due to this key, customer can enters their credit card number on a website,  without having  issues of cybercriminals seeing the credit card number.

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