Improved Blowfish Algorithm for Text Encryption Using DNA and Linear Feedback Shift Registers (LFSR)

Abstract

The Blowfish algorithm is a popular way to protect information by scrambling it. It is known for being strong and fast. The strength and randomness of the encryption key are very important for the security of Blowfish. This paper suggests a new way to make the key generation process better in the Blowfish algorithm by using Linear Feedback Shift Registers (LFSRs) and DNA Algorithm. LFSRs are basic but effective machines that create sequences that look random but are not truly random. The DNA algorithm is used to make it harder for others to guess the correct key. To make the Blowfish algorithm better, we are combining the LFSR and DNA Algorithms in the key generation stage. This will make it more secure and efficient. The security of Blowfish greatly depends on how strong and random the encryption key is. It also explains the benefits and things to think about when using these methods. The paper includes experiments to test if this approach works well.