CAESAR, or Cipher for the Encryption and Authentication of Secure Access Requests, is a cryptographic system designed to secure data transmission. It uses a method of encryption that transforms readable information into a coded format, making it difficult for unauthorized users to access the original content. This system is often employed in various applications, including secure communications and data storage. By ensuring that only authorized users can decrypt the information, CAESAR helps protect sensitive data from cyber threats and unauthorized access, contributing to overall cybersecurity efforts.