An Authenticated Bit Shifting and Stuffing (BSS) Methodology for Data Security

Abstract

Providing security to the data means the third party cannot interpret the actual information. When providing authentication to the data then only authorized persons can interpret the data. One of the methodology to provide security is cryptography. But in previous paper we have proposed a methodology for the cryptography process is BSS. In Bit Shifting and Stuffing (BSS) system to represent a printable character it needs only seven bits as per its ASCII value. In computer system to represent a printable character it requires one byte, i.e. 8 bits. So a printable character occupies 7 bits and the last bit value is 0 which is not useful for the character. In BSS method we are stuffing a new bit in the place of unused bit which is shifting from another printable character. To provide authentication a four bit dynamic key is generated for every four characters of the encrypted data and the key is also maintained in the data itself. While decryption the key is retrieved from the data and check whether the data is corrupted or not.