Data encryption at rest typically involves the use of encryption algorithms to transform readable data into unreadable code. This encrypted data can only be decrypted and read by those who have the appropriate encryption keys. Common methods include:
Full-Disk Encryption: This method encrypts all the data stored on a disk, making it inaccessible without the correct decryption key. File-Level Encryption: This method encrypts individual files or data objects, offering more granular control over what data is encrypted. Database Encryption: This involves encrypting data within a database, often using specific database encryption tools.