Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
// Use of this source code is governed by a BSD-style license that can be

import android.util.Base64;
import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;

public class Main {
    private static final String BEGIN_MARKER = "-----BEGIN CERTIFICATE-----";
    private static final String END_MARKER = "-----END CERTIFICATE-----";

    /**
     * Converts a PEM formatted cert in a given file to the binary DER format.
     *
     * @param pemPathname the location of the certificate to convert.
     * @return array of bytes that represent the certificate in DER format.
     * @throws IOException if the file cannot be read.
     */
    public static byte[] pemToDer(String pemPathname) throws IOException {
        BufferedReader reader = new BufferedReader(new FileReader(pemPathname));
        StringBuilder builder = new StringBuilder();

        // Skip past leading junk lines, if any.
        String line = reader.readLine();
        while (line != null && !line.contains(BEGIN_MARKER))
            line = reader.readLine();

        // Then skip the BEGIN_MARKER itself, if present.
        while (line != null && line.contains(BEGIN_MARKER))
            line = reader.readLine();

        // Now gather the data lines into the builder.
        while (line != null && !line.contains(END_MARKER)) {
            builder.append(line.trim());
            line = reader.readLine();
        }

        reader.close();
        return Base64.decode(builder.toString(), Base64.DEFAULT);
    }
}