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Unlimited Strength Crypto "patch" #2224

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codeodor opened this issue Nov 22, 2014 · 4 comments
Closed

Unlimited Strength Crypto "patch" #2224

codeodor opened this issue Nov 22, 2014 · 4 comments

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@codeodor
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@codeodor codeodor commented Nov 22, 2014

The programmatic way to fix the crypto restriction does get rid of the initial error message, but still fails for me due to another error related to not finding the algorithm.

This is with a Rails 4.2.0.beta4 app built on Mac OSX JRuby and deployed via executable WAR to Windows.

Installing the files worked fine, but I wonder if the programmatic instructions need some updating or clarification.

@headius
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@headius headius commented Nov 23, 2014

Can you show us the error you're getting with the crypto hack in place?

@codeodor
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@codeodor codeodor commented Nov 24, 2014

Let me uninstall Java and reinstall it hoping those 2 JARs go back to the original. I'll report back what I find.

@codeodor
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@codeodor codeodor commented Nov 24, 2014

Fresh install of Java 8 on Windows, move my warbler-created Rails WAR file over, run java -jar railsapp.war and load it up in the browser:

Illegal key size: possibly you need to install Java Cryptography Extension (JCE) Unlimited Strength Jurisdiction Policy Files for your JRE

Added the following code to initializers/java_crypto_patch.rb:

begin
  security_class = java.lang.Class.for_name('javax.crypto.JceSecurity')
  restricted_field = security_class.get_declared_field('isRestricted')
  restricted_field.accessible = true
  restricted_field.set nil, false
rescue java.lang.ClassNotFoundException
  puts "JCE security not available on this platform"
end

Ran warble executable war on the app again and moved it over to windows. Start the app, ....

And it works this time. Wow, now I wonder what caused the error before.

In any case, thanks for making me walk through it again, and sorry for wasting your time!

@headius
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@headius headius commented Nov 24, 2014

Thanks for confirming it at least! We always recommend latest JDK, so hopefully if there's any remaining problem it will fade with time.

@enebo enebo added this to the Invalid or Duplicate milestone Dec 8, 2014
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3 participants