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

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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