Korean translation

Hey everybody,

I'm designing a certificate for a black belt test. It's going to be Dutch with Korean Hangul, and it's almost done.
Now i found out that a lot of similar certificates contain some red stamps. Each stamp is different, like a square stamp stands for someone individual, and a square stamp with a large border around it, is supposed to be the name of a Dojang/Dojo.

Now there is another red stamp, always on top and on the border of these documents. I read that it's a 'security stamp' that seals a document, and means that it's a official document (not a fake).

I found a picture of that 'seal' stamp, but i wonder what it says.
I'm not quite sure that it's Hangul, but perhaps someone could help me on this?

Thanks in advance!

Oh btw; this is the picture: http://goodcharacters.com/images/stamps/4912.security.gif