question: public byte [ ] decrypt ( byte [ ] bytesToDecode , CharSequence password ) throws KeyCrypterException { try { byte [ ] salt = new byte [ SALT_LENGTH ] ; System . arraycopy ( bytesToDecode , 0 , salt , 0 , SALT_LENGTH ) ; byte [ ] cipherBytes = new byte [ bytesToDecode . length - SALT_LENGTH ] ; System . arraycopy ( bytesToDecode , SALT_LENGTH , cipherBytes , 0 , bytesToDecode . length - SALT_LENGTH ) ; ParametersWithIV key = ( ParametersWithIV ) getAESPasswordKey ( password , salt ) ; BufferedBlockCipher cipher = new PaddedBufferedBlockCipher ( new CBCBlockCipher ( new AESFastEngine ( ) ) ) ; cipher . init ( false , key ) ; byte [ ] decryptedBytes = new byte [ cipher . getOutputSize ( cipherBytes . length ) ] ; final int processLength = cipher . processBytes ( cipherBytes , 0 , cipherBytes . length , decryptedBytes , 0 ) ; final int doFinalLength = cipher . doFinal ( decryptedBytes , processLength ) ; return Arrays . copyOf ( decryptedBytes , processLength + doFinalLength ) ; } catch ( Exception e ) { throw new KeyCrypterException ( "Could not decrypt input string" , e ) ; } }
target:  Decrypt bytes previously encrypted with this class.