Modified Vigenère cipher algorithm based on new key generation method

Nowadays, as communication and network technologies evolve in modern life, ensuring the confidentiality of a cryptography system has become critical requirement. The Vigenère cipher is attracting attention specialists, although algorithm problem. problem due to repeating encryption key. As result multiple cryptographic approaches described literature, this paper proposes novel strategy for safe secure data exchange by utilizing new key generation process. proposed approach avoids issue keys. Additionally, classic encrypts plaintext using 26x26 table, researcher modified original table 95x95, which adds more potential letters, mathematical symbols, numerals, punctuation standard QWERTY keyboard layout. added case sensitivity. To observe performance method, index coincidence entropy have been calculated. obtained results confirm high comparison other algorithms used paper. primary goal make cryptanalysis extremely complex promote security.