I suspect that the smaller one is using Certicom's patented point compression representation of the public key.
Not sure on the signature part of your question. Bill -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Bruno Vétel Sent: October 9, 2008 4:35 PM To: openssl-users@openssl.org Subject: sect163k1 public keys hello It seems that sect163k1 public keys can have two formats The first with a key lentgh of 43 bytes which seems to be the standard, the second used by openssl with length 64 bytes. Can anyone tell me where I can find informations on that and what it the impact on signature. I used a development snapshot (openssl-SNAP-20080930) of openssl Thanks for your help Bruno Vetel ______________________________________________________________________ OpenSSL Project http://www.openssl.org User Support Mailing List openssl-users@openssl.org Automated List Manager [EMAIL PROTECTED] ______________________________________________________________________ OpenSSL Project http://www.openssl.org User Support Mailing List openssl-users@openssl.org Automated List Manager [EMAIL PROTECTED]