International Journal of Advanced Research in Computer Science and Software Engineering (IJARCSSE)
Cryptography is the study of various techniques for sending the data in distinct form so that only the intended receiver can recover the original data and read the data. Due to increases in technologies, Digital transmission becomes available. Multimedia data transmission increases day by day. Many application facilities and transaction are done over internet. There should be some secret information that needs security during transmission. Digital data are easy to copy and distribute. Due to this reason some standard algorithm introduced. In these America govt. for financial Applications and today widely used in various applications. Financial Company now replace DES by its Variant 3-DES.