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 java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.security.cert.Certificate;

public class Main {
    /**
     * Returns SHA256 hash of the public key of a given certificate.
     *
     * @param cert the cert that should be used to retrieve the public key from.
     * @return SHA256 hash of the public key.
     */
    public static byte[] getPublicKeySha256(Certificate cert) {
        try {
            byte[] publicKey = cert.getPublicKey().getEncoded();
            MessageDigest digest = MessageDigest.getInstance("SHA-256");
            return digest.digest(publicKey);
        } catch (NoSuchAlgorithmException ex) {
            // This exception should never happen since SHA-256 is known algorithm
            throw new RuntimeException(ex);
        }
    }
}