Hi, Am Dienstag, 26. November 2019, 09:11:15 CET schrieb Rohit Kaushal: > //enhancement, not working > > if(SSL_CTX_set1_curves(myCtx, "P-521:P-384:P-256", 3)) != 1)) > > return; > > > > The API returns 0 (suggesting no error), but pcap shows no change, i.e. > still shows the std. 13 curves. According to [1] SSL_CTX_set1_curves() returns 1 for success, 0 for failure. [1] https://www.openssl.org/docs/man1.1.0/man3/SSL_CTX_set1_curves.html -- Kind regards Jan