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I'm (desperately) looking for an icon to represent a Certification Authority, like the ones that sign X.509 certificates we use in secure e-commerce.

I need something which is concrete (not an abstract "idea" being depicted in a drawing) and conveys affordability, solidity, importance... I searched the Internet, finding stuff like this which is not impressive at all.

Well, I've seen somewhere a CA represented by a building which you can often see, mostly in the USA, for libraries, courthouses, and town halls. The 'front' of the building, endowed with columns and a typical triangular pediment, looks like the White House and recalls a Greek temple, somewhat.

I couldn't find a clip-art or icon of this kind of building, maybe because I search using the wrong keywords.

Can you help me?

EDIT: I'm searching for something like this, but less 'stylized' and less clip-artish.

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closed as not constructive by JonW May 15 '12 at 7:34

As it currently stands, this question is not a good fit for our Q&A format. We expect answers to be supported by facts, references, or expertise, but this question will likely solicit debate, arguments, polling, or extended discussion. If you feel that this question can be improved and possibly reopened, visit the help center for guidance.If this question can be reworded to fit the rules in the help center, please edit the question.

Even I don't think I would draw the line between "Greek looking building" and CA. Why not use something that looks like a certificate(…)? – Ben Brocka Sep 23 '11 at 20:12
The kind of building you're after is called a Capitol Building. Here's a clipart example: – PhillipW Sep 23 '11 at 20:34
@Ben Brocka: it's not for its greek-ness PhilipW: thanks – gd1 Sep 23 '11 at 20:57
@gd1 still, it's not a common association, unless it's well known in your user base I would avoid it. Such a symbol makes me think "bank" or "wall street," CA wouldn't even be on my list. If anything it seems much more abstract than the certificate. – Ben Brocka Sep 23 '11 at 21:09
@Ben: I think I'll put a certificate upon the building, in the upper-left corner or in the bottom-right one – gd1 Sep 23 '11 at 21:10
up vote 3 down vote accepted

How about using a badge (police-style badge, I mean)? Recognizable and it implies authority and trust.

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good idea....... – gd1 Sep 27 '11 at 6:26

What is the purpose of the icon? Are you looking for a static logo or the icon on an active UI element (that can be clicked)?

For the UI element, the icon by itself will almost certainly be insufficient for recognition -- additional text is necessary either on the button itself or at least in a tooltip. Icon itself is almost irrelevant, as there is no established convention. Padlock, police badge, official building with columns, certificate/diploma with seal -- almost anything would work, as long as it's consistent with your other icons.

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