question: private static byte [ ] lmResponse ( byte [ ] hash , byte [ ] challenge ) throws Exception { byte [ ] keyBytes = new byte [ 21 ] ; System . arraycopy ( hash , 0 , keyBytes , 0 , 16 ) ; Key lowKey = createDESKey ( keyBytes , 0 ) ; Key middleKey = createDESKey ( keyBytes , 7 ) ; Key highKey = createDESKey ( keyBytes , 14 ) ; Cipher des = Cipher . getInstance ( "DES/ECB/NoPadding" ) ; des . init ( Cipher . ENCRYPT_MODE , lowKey ) ; byte [ ] lowResponse = des . doFinal ( challenge ) ; des . init ( Cipher . ENCRYPT_MODE , middleKey ) ; byte [ ] middleResponse = des . doFinal ( challenge ) ; des . init ( Cipher . ENCRYPT_MODE , highKey ) ; byte [ ] highResponse = des . doFinal ( challenge ) ; byte [ ] lmResponse = new byte [ 24 ] ; System . arraycopy ( lowResponse , 0 , lmResponse , 0 , 8 ) ; System . arraycopy ( middleResponse , 0 , lmResponse , 8 , 8 ) ; System . arraycopy ( highResponse , 0 , lmResponse , 16 , 8 ) ; return lmResponse ; }
target:  Creates the LM Response from the given hash and Type 2 challenge.