A digital certificate signature is a secure, encrypted form of authentication that’s used to verify the identity of an individual or system. It helps to ensure data integrity and trust between two parties by using a certificate authority (CA) to validate and sign off each message, document, or transaction sent through a network. In essence, it’s like having your own “digital signature” that’s accepted as proof of your identity online. With digital certificates, you can quickly and securely send information from one location to another, knowing it will be received with the same level of trust and security as if you were personally signing off on every message yourself.