# Multiple signing of applets

Matt Siple {Reseller SE} (Matthew.Siple@East)
Wed, 14 Oct 1998 11:14:47 -0400 (EDT)

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Hello,

I am an SE working with the Java Plug-in team trying to keep
up with the Java Feedback alias. I have a customer that has
some security questions I really do not know how to answer
regarding multiple signitures on a single file. Can somone
help me out ?

Thanks,
-matt

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Is it possible to sign one jar-file with several different certificates/
signatures?

Is the number of applied certificates/signatures limited per file?

For Example:

1. Sign it with a Certificate for use with the Java Plug-in (using Sun's
signing tool "javakey").

and...

2. Sign the SAME jar-file with a second Certificate for use with the
Netscape Java VM (using Netscape's signing tool).

Doing this, would it then be possible to switch between Java
Plug-in or Netscape VM using the appropriate certificate
(by creating two different Links using the different HTML-Tags
"Applet" and "Embed")?

Would the first certificate be overwritten? Or, can both coexist and
therefore be recognised and read from the appropriate runtime
environment (either JavaPlug-in or Netscape Communicator VM)?

How can I create an empty identitydb.obj file? Or, where can I get
it?

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Wolfgang Volkart
Technical Product Consulting Voice: +41 (0) 1 825 70 54
Sun Microsystems (Schweiz) AG Fax: +41 (0) 1 825 72 99
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/_____/\ Matthew D. Siple
/____ \\ \ Sun Microsystems
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