42 Providing temporary use of online non-downloadable computer software for use in conducting electronic business transactions in the fields of mail and financial services; data encryption services; providing authentication of identity for electronic communications; issuance and management of digital certificates for authentication and encryption of a digital communication, or authentication of a digital signature in an electronic transaction or communication over a global computer network or other computer networks; technical consultation in the field of issuing and managing of digital certificates; Authentication services, namely, applying electronic date and time stamp to electronic documents, communications, and/or transactions to verify time and date received; Authentication services, namely, applying digital signatures to electronic documents, communications, and/or transactions to verify that the documents, communications, or transactions have not been altered after application of digital signature; Authentication services, namely, providing proof of receipt of electronic documents, communications, or transactions; and providing information in all of the foregoing fields by means of a global computer information network