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Timestamping PDF documents

Forum Index > Security > Timestamping PDF documents
2008-02-01 07:40:44
molla5
Registered: Feb 1 2008
Posts: 2

Hi,
I am trying to sign and timestamp a document using the acrobat reader.
I have set various open timestamp server in the Security Settings dialog.

Acrobat can get a timestamp from http based servers it does not get from those that require https.

I also would like to know which kind of authentication Acrobat send when username and password fields are set? It is something negotiated or
basic http authentication?

I tried the servers in the following URL.
http://www.aloaha.com/downloader/tsa.txt

http://timestamping.edelweb.fr/service/tsp works but I couldn't get
https://pki.aloaha.com/tsa.asp working.

Has anyone tried similar things and make it work?

Regards.

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2008-02-10 13:26:32
#1
mjmd
Registered: Feb 3 2008
Posts: 4
I am having exactly the same problem.

I can get the http://timestamping.edelweb.fr/service/tsp to work fine, and also can't get the aloaha server to work.

In addition, I have set up an account with Digistamp, and can't get that one to work either.

Anyone understand why this is? Any suggestions for official timestamp servers that do work?

Michael Jacobson
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2008-02-11 07:08:08
#2
gkaiseril
Expert
Registered: Feb 23 2006
Posts: 4307
Actually, Acrobat and Reader get the date time stamp from the local system along with the timezone offset. So you have to make sure your local system is synchronized.

George Kaiser

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2008-02-19 05:12:27
#3
mjmd
Registered: Feb 3 2008
Posts: 4
Update: Digistamp worked with me on this issue, and the problem was fixed. Seems to have been some misconfiguration on a few of their accounts (including mine). They were extremely helpful in tracking the problem down.

Anyway, if anyone else was having this problem, you should try again, it should be fixed.

MJ
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2009-03-30 14:52:15
#4
Susan Cyr
Registered: Mar 30 2009
Posts: 1
I created a digital signature that works just fine with the time stamp capabilities included with Acrobat 9 Standard. However, the time stamp includes way more information than we need. Is there a way to strip out everything but the date? In other words, instead of displaying:

John Doe 2009.03.30 10:16:02 -07'00'
just display
John Doe 2009.03.30
Thanks for any help!
Susan
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2009-04-02 16:17:27
#5
plevy
Expert
Registered: Jul 8 2008
Posts: 80
Alas, not unless you want to create a really custom signature appearance. See the Digital Signature Appearances document way down on http://www.adobe.com/go/acrobat_security. You'd have to want this really bad to implement the custom appearance.

You can remove the time altogether from the signature appearance by creating a custom appearance in Edit > Preferences > Security
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