Information Security is a major issue worldwide. Various steps are being taken to improve and upgrade security measures. Border crossings across countries have become one of them. Therefore the use of traditional passports has lead to an improvement in the name of E-passports. E-passports are a more secured and are denoted by a symbol. E-passports contain a small chip which stores the data of passport holder. To protect this data Cryptography is widely used. This paper shows the comparison of modular multiplication methods used for RSA algorithm for 1024 bit key length. Xilinx ISE 14.3 platform is used to perform this encryption and decryption process targeting Virtex-5 FPGA board.