N-GEN Communications Web-based Seminars ©NGCS

Seminar - An Overview of Communications Technologies

Module 6 - Internet, Intranet, Extranet, e-Commerce and Web Services                                      Slide 43 of 70 _________________                                                                                  __________

                                            Most Commonly Used Security Procols

                                     Secure Socket Layer (SSL)

                                     Secure Electronic Transaction (SET)

                                     The WWW Security Protocol (SHTTP.SSL)

                                     Secure / Multipurpose Internet Mail Extensions
                                        Protocol (S/MIME)

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Many security schemes has been developed for secure transactions on the Internet. Most popular security protocols are SSL and SET.

Secure Socket Layer (SSL) - This protocol is widely used on the Internet for transaction. While excepting a credit card the web sites identify that they are using the SSL protocol for the transaction. This protocol was developed by RCA Technologies Inc. SSL is used for secure transaction of credit card and other purchasing information on the Internet. It uses Public and Private Keys: Public Key to scramble the message and Private Key to de-scramble the message. The Private Key holder's identity is maintained by the Certificate issuing authorities.

Secure Electronic Transaction (SET) - This security standard is developed by Visa, MasterCard, American Express, banks, merchants and other e-Commerce players. SET, like SSL, uses Public and Private Keys, Private Keys held by the certificate issuing authority and both buyer and sellers have Private Keys. For a SET transaction, the user's Private Key functions as a digital signature to the seller and to the public payment networks.

SHTTP.SSL - It is a version of the HTTP protocol. It uses Public Key certificates.

S/MIME - It is an extension of MIME for secure file transmission over the Internet.