Abstract: The efficiency of a cryptographic algorithm is based on the time taken for encryption/decryption and the way it produces different cipher-text from a clear-text [1]. An alternative approach was suggested for handling ASCII characters in the cryptosystem, a magic square implementation to enhance the efficiency by providing add-on security to the cryptosystem. The encryption/decryption is based on numerals generated by magic square rather than ASCII values and expected to provide another layer of security to any public key algorithms such as RSA, EL Gamal etc.