"ENCRYPTION: scales to fit smaller RF ID tags"
Armed with a simplified mathematical approach to public-key encryption, NTRU Cryptosystems Inc. here is introducing intellectual property that can add security to virtually any circuit. The most recent product based on the approach is a circuit block that can be added to small wireless products such as smart cards and point-of-sale ID tags. NTRU claims the approach is as secure as the popular RSA public-key encryption system but is computationally much simpler.
Story in EE Times: http://www.eet.com/at/news/OEG20020408S0058