RFR - 8028627: Unsynchronized code path from javax.crypto.Cipher to the WeakHashMap used by JceSecurity to store codebase mappings

[Rob McKenna]

Hi folks,

The synopsis says it all really. There is an unsynchronized code path 
from javax.crypto.Cipher to the WeakHashMap used by JceSecurity to store 
codebase mappings. While this bug is extremely unlikely to manifest we 
have a couple of reports of it in the wild.

As you can see from the following webrev I'm simply syncing on the 
WeakHashMap.

http://cr.openjdk.java.net/~robm/8028627/webrev.01/

     -Rob