Issuing Client Certificate using HTML5
When you click "OK", please be patient even if it may appear that nothing is happening. Your computer needs a few seconds to generate your key pair and submit a Certificate Signing Request (CSR) to us (Open Web CA server). We can then issue your certificate, which will automatically be imported to your web-browser. If you are using outdated web-browsers which do not support HTML5 specifications, you are out of luck.
Source is here.
Please use modern web-browsers!
MS IE does not support HTML5 <keygen>. Please use modern web-browsers with HTML5 support. Click an icon below to download the most recent version (free).
If you must use MS IE, click here. (CAPICOM ActiveX control will be used.)