Perfect Computer Notes

What are different security protocols for e-payment security schemes? 1. SSL Protocol (Secure Sockets Layer Protocol) SSL (Secure Sockets Layer) is the standard security protocol for establishing an encrypted link between a web server and a browser. This link ensures that all data passed between the web server and browsers remain private and integral. SSL is used by millions of websites in the protection of their online transactions with their customers. SSL or Secure Sockets Layer is a security protocol created by Netscape that has become an international standard on the Internet for exchanging sensitive information between a website and the client computer. SSL technology is embedded in all popular browsers and engages automatically when the user connects to a web server that is SSL-enabled. It's easy to tell when a server is using SSL security because the address in the URL window of your browser will start with https. The "s" indicates a secure connection.

Explain E-payment Security Schemes Following are the e-payment security schemes 1) Encryption 2) Certificates & Certificates Authority (CA) 3) Digital Signature 4) Digital Envelop 5) Message Digest 6) Transaction Certificates and Time Stamp (1) Encryption Encryption refers to changing a message into unreadable form. Later the encrypted message can be converted into readable form by Decryption. There are two types of Encryption (A) Secret Key Encryption/Private Key Encryption In this scheme, same key called secret key is used by sender and receiver for Encryption (Making message unreadable) & Decryption (Getting original message). Data Encryption Standards (DES) is the most widely used algorithm for secret key/private key encryption scheme. (B) Public Key Cryptography It is Also known as asymmetric Encryption. It uses two different keys (1) Private Key (2) Public Key. The receiver sends his public key to sender. The sender encrypts message with thi

Difference Between Debit Card and Credit Card:         Debit Card Credit Card 1.       Debit card id equal to your account value. 2.       It is an Asset 3.     To use a debit card customer should have      sufficient balance in his / her bank account.   4.       It is like a Prepaid system 5.      You cannot buy an item with price higher then your balance. 1.     When you use Credit Card. You are Actually borrowing money from bank/financial institution 2.      It is Liability 3.      To use a Credit card customer may not have sufficient balance. 4.      It is like a Postpaid system 5.     You can buy an item with price higher then your bank balance (upto your credit limit.) Basics of eCommerce Definition and History of ECommerce Role of E-Commerce in Daily Life Classification of e-Commerce Applications Difference Between Electronic Market and IOS Types Of e-Comm