Enhancement CAST block algorithm to encrypt big data

In this research the security issues are discussed for securing big data. Encryption algorithms play an essential part to secure information. This paper demonstrates analysis of well-known block cipher CAST-256 and its modified version using modified S-Box and key generator. In this research the implementation of the modified CAST cryptography algorithm was discussed. It was worked dynamically on big data by utilizing the generated keys and compression algorithm to reduce the execution time. In the detail of security analysis and experimental results of the suggested encryption algorithm is rapidly and alternatively it supplied just right protection and added most likely much less overhead at the data, this in these days is probably the most necessities required for big data. The main idea of this research included in how to modify the CAST encryption algorithm by making it work in a dynamic way, make it dependent on DNA computing and using one S-Box instead of 6 S-Boxes.