Description: A backup key is a secondary key used to recover access to encrypted data. In the context of public key infrastructure (PKI), these keys are fundamental to ensuring the security and availability of information. The backup key allows users or administrators to access data in case the primary key is lost, damaged, or becomes inaccessible. This mechanism is essential for maintaining the integrity of encryption systems, as it ensures that information is not permanently lost. Backup keys are typically generated and stored securely, often in an environment separate from that used for primary keys, to minimize the risk of compromising security. Additionally, their use is crucial in various environments where losing access to critical data can have significant consequences. Therefore, implementing backup keys is a recommended practice in information security management, ensuring that encrypted data remains accessible even in adverse situations.