Code review request for 7172149 ArrayIndexOutOfBoundsException from Signature.verify

[Jonathan Lu]

Hi Security-dev,

Here's a patch for bug7172149, could anybody please help to take a look?
http://cr.openjdk.java.net/~luchsh/7172149/

The problem is that the range check in Signature.verify(byte[], int, 
int) uses integer value to check whether (offset + length) is greater 
than signature.length, but if (offset + length) overflows the check will 
fail and ArrayIndexOutOfBoundsException will be thrown instead of 
IllegalArgumentException.My proposed solution is to make a  conversion 
to long in the if block.

Thanks!
- Jonathan