dhoward wrote on Wednesday, May 11, 2011 20:01: > I was recently playing around with OpenSSL's EC_KEY interface, specifically > generating and examining keys generated using the curve sect233r1, when I > decided to print the raw key out, in hex form. A quick analysis showed me > that the key was stored in 232 bits, not 233 bits as the curve sect233r1 > requires - in fact, no matter how many keys I generated and checked this > way, I was always missing a bit. Is there some reason that OpenSSL uses only > 232 bits instead of the full 233?
Did you take into account the point compression as described in SEC 1: Elliptic Curve Cryptography 2.3.3 EllipticCurvePoint-to-OctetString Conversion [http://www.secg.org/collateral/sec1_final.pdf] -- Peter-Michael Hager - acm senior - HAGER-ELECTRONICS GmbH - Germany ______________________________________________________________________ OpenSSL Project http://www.openssl.org User Support Mailing List openssl-users@openssl.org Automated List Manager majord...@openssl.org
