Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;

import java.util.regex.*;

public class Main {
    /**
     * Verifies that an OID is in dot-separated string format.
     * TODO: Make this more robust.
     *
     * @param oid OID to verify
     * @return true if OID is valid, false otherwise
     */
    public static boolean verifyOid(String oid) {

        // Pattern to match '.' separated Oid string format
        Pattern oidPattern = Pattern.compile("^([0-9]+.{1})+[0-9]+$");
        Matcher oidIN = oidPattern.matcher(oid);

        if (oidIN.matches()) {
            return true;
        } else {
            return false;
        }
    }

    /**
     * Verifies DER-encoded byte array has a valid tag and length
     *
     * @param oid OID to verify, DER-encoded byte array
     * @return true if OID is valid, false otherwise
     */
    public static boolean verifyOid(byte[] oid) {

        /* verify tag is set to an OID (0x06) */
        if (oid[0] != 6)
            return false;

        /* verify length is correct */
        if (oid.length - 2 != oid[1]) {
            return false;
        }

        return true;
    }
}