Einstein International Journal Organization(EIJO)

ABSTRACT 

Cryptography protects the data stored in the hardware from unauthorized access. At present many authentication schemes have been developed. One of those schemes is authentication based on elliptic curves with the advantage of high security, small key size, and small bandwidth. Elliptic curve cryptography has evolved vast field for public key cryptography systems. In public key cryptography system, we use separate keys to encrypt and decrypt the data. In this project, a secured public key cryptography system has been designed and implemented. The encrypted data is transferred between two systems through Ethernet cable. In this technique, a public key is generated with the help of ring oscillator PUF which oscillates with unique frequency and produces random outputs. This resulted in speed, high throughput, area efficiency and lesser hardware requirements on FPGA. In the generalized ECC, cryptographic operations are performed over the points in Elliptic curve finite field and the data is mapped to those points. In this proposed method, the data varies each and every time. Hence arbitrary mapping (direct mapping) is used to easily map the data for elliptic curve points. Elliptic curve cryptography operations are programmed and synthesized in Xilinx ISE 14.6. Simulations have been done by “ModelSim Altera6.4a (Quartus-II 9.0) starter Edition”. The public key cryptography system have been implemented in two Virtex-5 FPGA board, where the plain text is taken as input in one device and cipher text is obtained at the output of the device. The encrypted cipher text is transferred through LAN (Ethernet cable) and received by another device. this device decrypts the plain text. It provide confidentiality, authentication and message integrity in a LAN by including various attacks like brute-force attack, chosen-cipher text attack, chosen-plaintext attack.

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