| 摘要 |
PROBLEM TO BE SOLVED: To provide a electronic commercial transaction method that has both communication security, to say nothing of, and legal safety being equivalent to electronic commercial transaction through a dedicated line, through the internet. SOLUTION: VPN partner registration 2 is performed with respect to a transaction partner who has singed for a prescribed EDI exchange agreement 1 including transaction contents through the Internet, liability/responsibility about the transaction contents and communication security provision, an IC passport 5 is issued from a B2B generator 4 included in an authentication system 3 and lent to the VPN partner, and only the VPN partner router 10 of the VPN partner to whom the passport 5 is lent opens a VPN communication line with a VPN core router 8 through the Internet 9 and can perform electronic commercial transactions. |
