Modified Blowfish algorithm analysis using derivation cases

This study analyzed and enhanced the modified Blowfish algorithm (MBA) encryption. The modification retained original structure, process use of two S-boxes in MBA but presented derivation processes f-function which was originally placed to prevent symmetry. case’s performance using avalanche effect time efficiency. After comparing first second MBA, further improved by 5.47%, thus improving security. also showed that is faster 39.48% encryption time, 38.34% decryption time. case slower because difference placement shift rotation. key generation found be independent input size while directly proportional file size. With this, considered better.