Sorry one other point. Just noticed that in one of your other posts, you have been provided with a previously existing private key. In that case you need to find out what curve that private key was associated with.
Matt On 22 May 2012 17:04, Matt Caswell (fr...@baggins.org) <fr...@baggins.org> wrote: > NID_ecdsa_with_SHA256 is not the name of a curve. > > NID_secp256k1 is probably a good choice. Refer to the following > document for a discussion on recommended curves (appendix d), and then > find the related NID name for the curve you want in OpenSSL: > http://csrc.nist.gov/publications/fips/fips186-3/fips_186-3.pdf > > Matt > > > On 22 May 2012 16:07, Khuc, Chuong D. <ck...@swri.org> wrote: >> Hi, >> I got a problem with >> EC_KEY_new_by_curve_name: it always return NULL. Here is how I used it: >> EC_KEY *eckey = EC_KEY_new_by_curve_name(NID_ecdsa_with_SHA256); >> If(eckey == NULL) >> { >> printf("ERROR: NULL ECKEY!\r\n"); >> } >> Do you happen to know the reason? ______________________________________________________________________ OpenSSL Project http://www.openssl.org User Support Mailing List openssl-users@openssl.org Automated List Manager majord...@openssl.org
