Chapter 30 - Electronic Commerce and Business - PowerPoint PPT Presentation

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Chapter 30 - Electronic Commerce and Business

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  1. Chapter 30 - Electronic Commerce and Business • Introduction • E-Commerce is Big Business • all commercial transactions conducted over the Internet • shopping, online banking, invesing, bill paying • Security Made E-commerce Possible (shopping cart) • Secure Sockets (SSL) • Public Key Encryption Provides Authenticity • Public key encryption is surprisingly general -- in addition to guaranteeing that messages remain confidential, it can be used to verify authenticity. • Encryption Software Needs a Key

  2. Chapter 30 - Electronic Commerce and Business • Digital Signatures • A digital signature consists of a special form of encrypted message; the encryption technology guarantees that a digital signature cannot be forged. • Certificates Contain Public Keys • What is Digital Money? (like a debit card) • Digital Cash Is Not Widely Available • micropayments • Business and E-commerce • A Business Must Protect Its Networks • Firewalls Protect Networks

  3. Chapter 30 - Electronic Commerce and Business • A Firewall Filters Packets • Firewalls Guard Against Trojan Horses • A firewall is placed between a company and the Internet to restrict access to the company from the outside. To prevent a Trojan horse attack, the firewall also restricts access to the Internet from within the company. • DEFINITIONS OF VIRUSES AND OTHER COMPUTER "VERMIN"

  4. Chapter 30 - Electronic Commerce and Business • Terms • e-commerce • e-business • shopping cart • sockets • public key encryption • digital signature • digital money • firewall • Trojan horse • virus • worm