Online Payment Fraud Prevention Using Cryptographic Algorithm TDES

Credit card is a small plastic card issued by a bank, building society, etc., allowing the holder to purchase goods or services on credit. Debit card is a card allowing the holder to transfer money electronically from their bank account when making a purchase. The use of credit cards and debit cards are increasing day by day. People are relying more on both cards nowadays than in the previous days. As credit cards and debit cards becomes the most popular mode of payment for both online as well as regular purchase, cases of fraud associated with it are also rising. In real life, fraudulent transactions are scattered with genuine transactions and simple pattern matching techniques are not often sufficient to detect those frauds accurately. In this project the process of Cryptography has been followed, it is one of the most important security technologies which used to secure the data transmission and the data itself. As the time and challenge growth, the cryptography also grows up with variety of encryption techniques and algorithms. Among the algorithms, one of the most popular is the Triple Data Encryption Standard algorithm. Triple Data Encryption Standard is a type of computerized cryptography where block cipher algorithms are applied three times to each data block. The key size is increased in Triple DES to ensure additional security through encryption capabilities. The major advantage of TDES is, it is three times slower than regular DES but can be billions of times more secure if used properly. Since it is based on the DES algorithm, it is very easy to modify existing software to use Triple DES.