Hi, I have a question on the Nescape certificate. I've signed the SPKI request from Netscape and then I put the signed certificate back to the client browser.However, I found that there is a problem in verifying this certificate in Netscape browser. When I click "Verify" button in Netscape browser(security section), an error occurred: "Certificate Signature Invalid". I am sure that I've installed the CA root certificate properly as there is no error in verifying CA root certificate in Netscape. Then, I've exported the "installed certificate" to .p12 file from Netscape browser and then I installed the .p12 file into IE browser. I found that this time everything goes fine. That is, IE can recognize my certificate properly. I wonder if there is a trick in generating client certificate for fitting Netscape browser. Many Thks for your help Best regards, Peter ______________________________________________________________________ OpenSSL Project http://www.openssl.org User Support Mailing List [EMAIL PROTECTED] Automated List Manager [EMAIL PROTECTED]