encryption of electronically transmitted information on global communications networks; secure storage and safekeeping as a trustee, known as escrow services, of electronic encryption keys; electronic verification of electronic digital signatures; recording of electronic encryption keys in electronic digital certificates; digitally signing (certifying) electronic digital certificates with an electronic encryption key; placement in an electronic database of information pertinent to the suspension or revocation (canceling the certification, or making inoperative) of electronic digital certificates; providing encryption secured computer servers; electronic time stamping of electronically transmitted information; electronic verification of signatory authority for credit cards