This is to post the following URL presenting a security protocol for electronic commerce proposed by Hewlett-Packard Laboratories, Bristol, UK. http://www.hp.co.uk/projects/vishnu/main.htm Your comments are gratefully appreciated. Best regards, Wenbo Mao Hewlett-Packard Laboratories Filton Road Bristol, UK BS12 6QZ Tel: +44 (0)117 922 9528 Fax: +44 (0)117 922 8924 Email: wm@hplb.hpl.hp.com