Which of the following functions can an encryption algorithm perform?

The function of an encryption algorithm primarily revolves around transforming readable data into an unreadable format, a process known as encryption. This transformation ensures that any sensitive information is rendered inaccessible to unauthorized users, maintaining confidentiality and security. By using mathematical algorithms, encryption makes it difficult for anyone without the correct decryption key to retrieve or understand the original data.

This key function protects data during transmission and storage, making it essential for secure communications and safeguarding information against breaches. Encryption serves as a fundamental mechanism in cybersecurity, allowing users and organizations to secure personal, financial, and proprietary information effectively.