question: private static byte [ ] lmv2Response ( final byte [ ] hash , final byte [ ] challenge , final byte [ ] clientData ) throws AuthenticationException { final HMACMD5 hmacMD5 = new HMACMD5 ( hash ) ; hmacMD5 . update ( challenge ) ; hmacMD5 . update ( clientData ) ; final byte [ ] mac = hmacMD5 . getOutput ( ) ; final byte [ ] lmv2Response = new byte [ mac . length + clientData . length ] ; System . arraycopy ( mac , 0 , lmv2Response , 0 , mac . length ) ; System . arraycopy ( clientData , 0 , lmv2Response , mac . length , clientData . length ) ; return lmv2Response ; }
target:  Creates the LMv2 Response from the given hash, client data, and Type 2 challenge.