Java Key Pair Create generateKeyPair()

Description

Generates a keypair (public and private) based on Elliptic curves.

License

Apache License

Return

The generated keypair

Declaration

public static KeyPair generateKeyPair() 

Method Source Code

//package com.java2s;
/*//from ww w .  ja  v a 2 s .c o m
 * Copyright 2017 Danish Maritime Authority.
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */

import java.security.InvalidAlgorithmParameterException;
import java.security.KeyPair;
import java.security.KeyPairGenerator;

import java.security.NoSuchAlgorithmException;
import java.security.NoSuchProviderException;

import java.security.SecureRandom;

import java.security.spec.ECGenParameterSpec;

public class Main {
    public static final String BC_PROVIDER_NAME = "BC";

    /**
     * Generates a keypair (public and private) based on Elliptic curves.
     * 
     * @return The generated keypair
     */
    public static KeyPair generateKeyPair() {
        ECGenParameterSpec ecGenSpec = new ECGenParameterSpec("secp384r1");
        KeyPairGenerator g;
        try {
            g = KeyPairGenerator.getInstance("ECDSA", BC_PROVIDER_NAME);
        } catch (NoSuchAlgorithmException | NoSuchProviderException e) {
            throw new RuntimeException(e.getMessage(), e);
        }
        try {
            g.initialize(ecGenSpec, new SecureRandom());
        } catch (InvalidAlgorithmParameterException e) {
            throw new RuntimeException(e.getMessage(), e);
        }
        KeyPair pair = g.generateKeyPair();
        return pair;
    }
}

Related

1. generateKeyPair()
2. generateKeyPair()
3. generateKeyPair()
4. generateKeyPair()
5. generateKeyPair()
6. generateKeyPair()
7. generateKeyPair(final Provider provider, final String keyPairAlgorithm, final String secureAlgorithm)
8. generateKeyPair(final String algorithm, final int keylen)
9. generateKeyPair(final String algorithmModePad, final int keySize)