DATA SECURITY USING PLAY COLOR CIPHER SUBSTITUTION TECHNIQUE AND ARMSTRONG NUMBER.

In this paper a block cipher is developed with play color cipher algorithm and Armstrong number. In it a alphanumeric key is used with transposition and substitutions. This paper provides a technique to encrypt the data using a key involving Armstrong numbers and play color cipher as the password. The encryption, decryption, key generation is explained with suitable example. The cipher is very strong as it has double security by using play color cipher and Armstrong number