Re: FIPS Java API provider and non-FIPS provider

The high risk element is the JCE - it depends how it gets loaded and if
both things make use of the respective providers. Often this means
things end up in the system class loader and in that case there can be
only one.

If bcprov isn't loaded in the system class loader and/or bc-fips is able
to satisfy the dependency anyway, you will probably be okay.

General the problems you see if it is an issue don't make sense. You'll
get issues with undefined methods, class not found, missing fields. In
some cases you will get class cast exceptions where it seems impossible
as well.

If you want to ask the OpenSAML guys to talk to us we would be happy to
help them update.

Regards,

David

On 20/06/18 05:04, Rhuberg,Anthony wrote:
>
> Just a follow up from my previous question…
>
>  
>
> We have a configuration with a Tomcat Valve which uses opensaml (with
> a dependency on xmlsec -> bcprov-jdk15on). These classes are part of
> the root class loader (call it CLroot).
>
> We just started using bc-fips-1.0.1.jar for digital signatures in a
> web application. That jar is part of the war (call it CL1).
>
>  
>
> Based on this configuration, we expected to observe some conflict when
> executing the pathways for the Tomcat Valve and web application.
>
>  
>
> The applications are “working”, but worry that there is some unseen or
> potential problem that we have just not encountered.
>
>  
>
> Any thoughts? Do you have an examples of how a collision (between the
> 2 jars bcprov-jdk15on - bc-fips-1.0.1.jar ) would be manifest? Do you
> have examples of typical errors when there is a conflict?
>
>  
>
> Thanks,
>
> Tony
>
>  
>
>  
>
> *From:*Matti Aarnio [mailto:[email protected]]
> *Sent:* Tuesday, June 05, 2018 2:33 PM
> *To:* Rhuberg,Anthony <[email protected]>;
> [email protected]
> *Subject:* Re: [dev-crypto] FIPS Java API provider and non-FIPS provider
>
>  
>
> Hi Tony,
>
> The detail that affects more than "in same JVM" is "are they in same
> class loader?"
>
> WARs are loaded into separate class loader chains.
> WAR1 gets loader chain:  CL1, CLroot.
> WAR2 gets loader chain:  CL2, CLroot.
>
> If neither BCFIPS nor BCPROV are in CLroot, and instead in separate WARs,
> then the libraries will not see each other, and no collision happens.
>
> The "CLroot" is server/lib/ in current Tomcats.
> The "CLn" is webapps/warname/WEB-INF/lib/
>
> Best Regards, Matti
>
> On 05.06.2018 21:01, Rhuberg,Anthony wrote:
>
>     We have an application deployed within Tomcat and that application
>     is uses Apache CXF which has a dependency on bcprov-jdk15on-1.51.
>
>     Referring to:
>     https://www.bouncycastle.org/fips-java/BCFipsIn100.pdf
>     <https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.bouncycastle.org%2Ffips-java%2FBCFipsIn100.pdf&data=02%7C01%7CAnthony.Rhuberg%40Cerner.com%7Ce60fa34500a84aeb1a7a08d5cb12c856%7Cfbc493a80d244454a815f4ca58e8c09d%7C0%7C1%7C636638203905695412&sdata=wmqUcMfgAVX7I2s%2F6rXx2ZCBUnzZZRRMKMBWZXLPR3o%3D&reserved=0>:
>     “The provider jar itself has no external dependencies, but it
>     cannot be used in the same JVM as the regular Bouncy Castle
>     provider. The classes in the two jar files do not get along”.
>
>     We are integrating FIPS Java API provider into another application
>     WAR. We have not encountered an issues yet, but wanted to know
>     what kinds of errors are expected if two applications use
>     different Bouncy Castle Java implementations within the same JVM.
>
>     Thanks,Tony
>
>  
>
>  
>
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