import java.sql.Connection; import java.sql.DriverManager; import java.sql.ResultSet; import java.sql.Statement; import java.util.Arrays; public class Ilockauth { public static void main( String args[] ) { String db_id = args[0]; String bike_id = args[1]; Connection c = null; Statement stmt = null; try { Class.forName("org.postgresql.Driver"); c = DriverManager .getConnection("jdbc:postgresql://localhost:5432/" + db_id, "postgres", ""); c.setAutoCommit(false); //System.out.println("Opened database successfully"); stmt = c.createStatement(); ResultSet rs = stmt.executeQuery( "SELECT * FROM content where barcode=" + bike_id + ";" ); while ( rs.next() ) { byte[] randomNum = new byte[16]; byte[] K_int = rs.getBytes("byte01"); //example by byte[] //byte[] K_int = {(byte) 0xA7, (byte) 0x99, (byte) 0x91, 0x12, 0x49, (byte) 0xE0, (byte) 0xBA, (byte) 0xD5, (byte) 0xF2, 0x48, (byte) 0x8D, (byte) 0xC1, 0x7E, 0x28, 0x2D, (byte) 0xD0}; System.out.println( "K_int = " + Arrays.toString(K_int)); Ilockkeygen.generateKey(randomNum, K_int); } rs.close(); stmt.close(); c.close(); } catch ( Exception e ) { System.err.println( e.getClass().getName()+": "+ e.getMessage() ); System.exit(0); } //System.out.println("Operation done successfully"); } }