What is encryption used for?

Encryption is a critical security measure used to protect data by converting it into a coded format, rendering it unreadable to anyone who does not possess the appropriate decryption key. This process is essential in preventing unauthorized access to sensitive information such as personal details, financial records, and confidential communications. By using algorithms to transform the data, encryption ensures that even if an unauthorized party intercepts the encrypted information, they would not be able to comprehend it without the correct decryption method. This mechanism helps maintain the confidentiality and integrity of information, making it a fundamental component of data security strategies across various industries.

The other options do not accurately represent the primary purpose of encryption. Making data easily shareable is more associated with data accessibility rather than its protection. Permanently deleting data is a different process entirely, focusing on data destruction. Storing data in an easily accessible format pertains more to data management and organization than to its security. Thus, the function of encryption stands out clearly as a protective measure against unauthorized access.