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Flexible Hardware Processor for Elliptic Curve Cryptography Over NIST Prime Fields

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3 Author(s)
Kendall Ananyi ; FinancialCAD Corp., Surrey, BC, Canada ; Hamad Alrimeih ; Daler Rakhmatov

Exchange of private information over a public medium must incorporate a method for data protection against unauthorized access. Elliptic curve cryptography (ECC) has become widely accepted as an efficient mechanism to secure sensitive data. The main ECC computation is a scalar multiplication, translating into an appropriate sequence of point operations, each involving several modular arithmetic operations. We describe a flexible hardware processor for performing computationally expensive modular addition, subtraction, multiplication, and inversion over prime finite fields GF(p) . The proposed processor supports all five primes p recommended by NIST, whose sizes are 192, 224, 256, 384, and 521 bits. It can also be programmed to automatically execute sequences of modular arithmetic operations. Our field-programmable gate-array implementation runs at 60 MHz and takes between 4 and 40 ms (depending on the used prime) to perform a typical scalar multiplication.

Published in:

IEEE Transactions on Very Large Scale Integration (VLSI) Systems  (Volume:17 ,  Issue: 8 )