Signature.getAlogrithm return null in special case

Deven You youdwei at
Mon May 13 21:46:42 PDT 2013

Hi All,

I find in a special case: If you create a SignatureSpi service through 
extending Signature rather than SignatureSpi, the returned signature 
instance will lose its algortithm name.

Though the fix[1] is simple I think it's valuable. Could anyone take a look?


Thanks a lot
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