question: public void updateKey ( byte [ ] blowfishKey ) { this . blowfishKey = blowfishKey ; System . arraycopy ( SBOX_INIT_0 , 0 , sBoxes [ 0 ] , 0 , 256 ) ; System . arraycopy ( SBOX_INIT_1 , 0 , sBoxes [ 1 ] , 0 , 256 ) ; System . arraycopy ( SBOX_INIT_2 , 0 , sBoxes [ 2 ] , 0 , 256 ) ; System . arraycopy ( SBOX_INIT_3 , 0 , sBoxes [ 3 ] , 0 , 256 ) ; initArrays ( ) ; }
target:  Update current blowfish key with the new one and reinitialize the P-array and S-boxes