What is the primary objective of data encryption?

The primary objective of data encryption is to protect data from unauthorized access. By transforming readable data into a format that is unreadable without the appropriate decryption key, encryption safeguards sensitive information from being accessed by individuals or entities who do not have permission. This is particularly important for securing personal data, financial information, and confidential business communications, ensuring that even if data is intercepted or accessed through a breach, it remains secure and unusable without the corresponding decryption methods.

While options such as making data unusable, storing data efficiently, or increasing processing speed relate to data management, they do not capture the essential function of encryption, which is centered on maintaining the confidentiality and integrity of information against threats and vulnerabilities.