Describe digital certificates.

What will be an ideal response?

Digital certificates are public-key container files that allow computer programs to validate the key and identify to whom it belongs. The certificate is often issued and certified by a third party, usually a certificate authority. A digital signature attached to the certificate's container file certifies the file's origin and integrity. A certificate authority (CA) issues, manages, authenticates, signs, and revokes users' digital certificates, which typically contain the user name, public key, and other identifying information.