11.   SET calls for encoded digital certificates that people can use as the equivalent of credit cards for electronic transactions.

12.   Thawte is the second-largest seller of digital certificates.

13.   The digital certificate typically is sent along with a digitally signed message to verify that the sender is truly the entity identifying itself in the transmission.

14.   The flawed digital certificates in the Microsoft case are used only for checking the authenticity of the name of the developer of a software program.

15.   The newest Web-browsing software about to be introduced by Netscape Communications Corp. and Microsoft will support a technology called digital certificates.

16.   The system is built around a so-called digital certificate, a kind of electronic ATM card that provides customers with sophisticated security for their accounts.

17.   VeriSign works with digital certificates, a piece of the security business in which RSA had no experience.

18.   A digital certificate is an encrypted data file that includes personal data of the digital identification holder.

19.   Certification authorities are organisations which issue digital certificates.

20.   Digital certificates are a key security feature of the software Microsoft uses to demonstrate its programs are genuine.