1. Electronic Payment Security Technologies

2. Authentication Your signature here! Digital signatures
A unique code applied to an electronically transmitted message that identifies the sender
Uses hashing technology so that changing the code will no longer match with the document
Your signature here!

3. Digital Certificates
An electronic document that verifies the sender or receiver’s identify
Certificate authority
Types and classes of digital certificate
Site certificates
Personal authority certificates
Certifying authority certificates
Software publisher certificates

4. Secure Sockets Layer (SSL)
A protocol designed to provide a secure connection between the sender and receiver of information
Server name of

5. Functioning of SSL Three basic properties of secure channel
The channel is private
The channel is authenticated
The channel is reliable

6. Establishing an SSL Secure Connection
User browses Web
Selects payment screen
Request sent to server
Server returns payment screen
Server returns certificate
6. Browser picks one algorithm
Browser creates key pair
Browser encrypts secret key
Browser sends encrypted key to server
Server decrypts
Two-way encrypted transmissions can
occur

7. Secure Electronic Transaction (SET)
A security protocol designed for handling encrypted electronic payments online
Specifications include:
Confidentiality of information
Payment data integrity
Authentication of merchants, cardholders, and clearinghouses
Interoperability with other protocols
Dual Signature

8. Digital Wallet
Software that encrypts payment information and stores it in a file
Opponents suggest serious privacy and security issues