Hello, I'm very new to OpenSSL, just have my first Apache/mod_ssl server running with self signed server and client certificates. Still trying to read all the documents for OpenSSL. Here is my question: I want to include some binary data (1024 byte) in the client certificate for authentication purpose. I figured this has to be done through the certificate extension. I read the openssl.txt file but still unclear how this could be done. Is it possible? Thanks in advance James Xie ______________________________________________________________________ OpenSSL Project http://www.openssl.org User Support Mailing List [EMAIL PROTECTED] Automated List Manager [EMAIL PROTECTED]