* Li, Yvonne wrote on Fri, Apr 18, 2008 at 23:46 -0400:
> You have lots of good points. Thank you again.
> 
> I work for AOL, developing cross platform SDK for instant messaging that
> supports plugins. Plugins can be malicious. And AOL is responsible for
> protecting users' identity and privacy. Considering our user base, a
> trojan is more likely to target our users than to protect them. 

So in short, you cannot trust the environment you run some SSL
based application in, right? Because it is the same environment
other plug-ins can do whatever they want?

In that case I'm afraid you're lost. You cannot create a secure
something inside a trojan horse environment I think. First, you
application that verifies whatever can be modified when loading
or replaced completely (who can replace libs, probably can
also replace binaries). Second, your trust database (e.g. root CA
certificate or alike) could be replaced (e.g. by intercepting the
open/read system calls or whatever). Some malicious CA certficate
could be put in place. I could imagine that this is easier than
trojaning platform-dependent openssl libs in version-dependent
internet tools and even would work for web browsers :)

> What do the majority applications do on Unix if static linking
> with openssl isn't suitable?

For security reasons, I think here is should be suitable, because
if there would be some security issue with openssl or any other
used library or system package, even after the unix vendor /
linux distributor online-update-mechanism installed a fixed
openssl lib, a static linked application would still be
vulnerable!

oki,

Steffen
 
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