Hybrid- Blowfish Security Strengths Using Side Channel Countermeasures

in today’s digital age, the need for secure communication has become increasingly crucial. Cryptography has become an essential aspect of modern-day communication, where transmitting and storing sensitive information securely is paramount. By using encryption techniques, cryptography protects sensitive information stored in computer systems, transmitted through networks and exchanged among individuals. It is vital for organizations to implement robust cryptography practices in order to safeguard their critical data and protect themselves from cyber-attacks. The misuse or breach of sensitive information can result in serious consequences such as financial loss, reputational damage and data theft. Overall, We introduce new algorithm Hybrid-Blowfish by combination between blowfish and counter-measure of SCA using Masking string, we compared DES, 3DES, AES, blowfish, RSA and Hybrid-Blowfish across the tests like frequency test, serial test, encryption time, decryption time, memory used, avalanche effect, entropy and no of bits required for encoding optimally and the result demonstrate the effectiveness and superiority of Hybrid-Blowfish compared to traditional Blowfish and increase the cyber-security strength by approximately 25%