Electronic Commerce

Electronic Commerce

1. Electronic networks

   • LAN
   • MAN
   • WAN

2. Internet

   • ARPA
     • ARPANET
   • Other network
     • Bitnet
     • MILnet
     • NSFnet
   • Fixed IP address
   • Dynamic IP address
   • Domain name
   • Domain name servers

3. Intranet

   • Firewalls can be defeated
     • An attacker can assume a false identify such as a false IP address
       • additional layers of defense
         • Access limits through password control
           • Encryption
           • Proxy servers

4. Servers

   • Mail servers
   • Web servers
   • Commerce servers
   • File servers

5. Electronic payment systems

   • Traditional electronic bill
   • Traditional credit card
   • Secure electronic transaction (SET)
   • Virtual cash

6. Security for electronic

   • Secret key encryption
   • Public key encryption
   • Digital envelopes

7. Electronic commerce and encryption technology

   • Digital cash
   • Blinding
   • Blinded digital signature
   • Electronic wallet
   • Smart cards
     • Memory cards
     • Shared-key
     • Signature transporting
     • Signature creating

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