Examples with KeyPairGenerator java.security.KeyPairGenerator used on opensource projects

Example 81 with KeyPairGenerator

use of java.security.KeyPairGenerator in project yyl_example by Relucent.

the class Rsa method main.

public static void main(String[] args) throws Exception {
    KeyPairGenerator keyPairGen = KeyPairGenerator.getInstance("RSA");
    // 密钥位数
    keyPairGen.initialize(1024);
    // 密钥对
    KeyPair keyPair = keyPairGen.generateKeyPair();
    // 公钥
    PublicKey publicKey = (RSAPublicKey) keyPair.getPublic();
    // 私钥
    PrivateKey privateKey = (RSAPrivateKey) keyPair.getPrivate();
    String publicKeyString = getKeyString(publicKey);
    System.out.println("public:\n" + publicKeyString);
    String privateKeyString = getKeyString(privateKey);
    System.out.println("private:\n" + privateKeyString);
    // 加解密类
    // Cipher.getInstance("RSA/ECB/PKCS1Padding");
    Cipher cipher = Cipher.getInstance("RSA");
    // 明文
    byte[] plainText = "我们都很好！邮件：@sina.com".getBytes();
    // 加密
    cipher.init(Cipher.ENCRYPT_MODE, publicKey);
    byte[] enBytes = cipher.doFinal(plainText);
    // 通过密钥字符串得到密钥
    publicKey = getPublicKey(publicKeyString);
    privateKey = getPrivateKey(privateKeyString);
    // 解密
    cipher.init(Cipher.DECRYPT_MODE, privateKey);
    byte[] deBytes = cipher.doFinal(enBytes);
    publicKeyString = getKeyString(publicKey);
    System.out.println("public:\n" + publicKeyString);
    privateKeyString = getKeyString(privateKey);
    System.out.println("private:\n" + privateKeyString);
    String s = new String(deBytes);
    System.out.println(s);
}

Example 82 with KeyPairGenerator

use of java.security.KeyPairGenerator in project chassis by Kixeye.

the class JettyConnectorRegistry method registerHttpsConnector.

/**
     * Register to listen to HTTPS.
     * 
     * @param server
     * @param address
     * @throws Exception 
     */
public static void registerHttpsConnector(Server server, InetSocketAddress address, boolean selfSigned, boolean mutualSsl, String keyStorePath, String keyStoreData, String keyStorePassword, String keyManagerPassword, String trustStorePath, String trustStoreData, String trustStorePassword, String[] excludedCipherSuites) throws Exception {
    // SSL Context Factory
    SslContextFactory sslContextFactory = new SslContextFactory();
    if (selfSigned) {
        char[] passwordChars = UUID.randomUUID().toString().toCharArray();
        KeyStore keyStore = KeyStore.getInstance(KeyStore.getDefaultType());
        keyStore.load(null, passwordChars);
        KeyPairGenerator keyPairGenerator = KeyPairGenerator.getInstance("RSA");
        keyPairGenerator.initialize(1024);
        KeyPair keyPair = keyPairGenerator.generateKeyPair();
        X509V3CertificateGenerator v3CertGen = new X509V3CertificateGenerator();
        v3CertGen.setSerialNumber(BigInteger.valueOf(new SecureRandom().nextInt()).abs());
        v3CertGen.setIssuerDN(new X509Principal("CN=" + "kixeye.com" + ", OU=None, O=None L=None, C=None"));
        v3CertGen.setNotBefore(new Date(System.currentTimeMillis() - 1000L * 60 * 60 * 24 * 30));
        v3CertGen.setNotAfter(new Date(System.currentTimeMillis() + (1000L * 60 * 60 * 24 * 365 * 10)));
        v3CertGen.setSubjectDN(new X509Principal("CN=" + "kixeye.com" + ", OU=None, O=None L=None, C=None"));
        v3CertGen.setPublicKey(keyPair.getPublic());
        v3CertGen.setSignatureAlgorithm("MD5WithRSAEncryption");
        X509Certificate privateKeyCertificate = v3CertGen.generateX509Certificate(keyPair.getPrivate());
        keyStore.setKeyEntry("selfSigned", keyPair.getPrivate(), passwordChars, new java.security.cert.Certificate[] { privateKeyCertificate });
        ByteArrayOutputStream keyStoreBaos = new ByteArrayOutputStream();
        keyStore.store(keyStoreBaos, passwordChars);
        keyStoreData = new String(Hex.encode(keyStoreBaos.toByteArray()), Charsets.UTF_8);
        keyStorePassword = new String(passwordChars);
        keyManagerPassword = keyStorePassword;
        sslContextFactory.setTrustAll(true);
    }
    KeyStore keyStore = KeyStore.getInstance(KeyStore.getDefaultType());
    if (StringUtils.isNotBlank(keyStoreData)) {
        keyStore.load(new ByteArrayInputStream(Hex.decode(keyStoreData)), keyStorePassword.toCharArray());
    } else if (StringUtils.isNotBlank(keyStorePath)) {
        try (InputStream inputStream = new DefaultResourceLoader().getResource(keyStorePath).getInputStream()) {
            keyStore.load(inputStream, keyStorePassword.toCharArray());
        }
    }
    sslContextFactory.setKeyStore(keyStore);
    sslContextFactory.setKeyStorePassword(keyStorePassword);
    if (StringUtils.isBlank(keyManagerPassword)) {
        keyManagerPassword = keyStorePassword;
    }
    sslContextFactory.setKeyManagerPassword(keyManagerPassword);
    KeyStore trustStore = null;
    if (StringUtils.isNotBlank(trustStoreData)) {
        trustStore = KeyStore.getInstance(KeyStore.getDefaultType());
        trustStore.load(new ByteArrayInputStream(Hex.decode(trustStoreData)), trustStorePassword.toCharArray());
    } else if (StringUtils.isNotBlank(trustStorePath)) {
        trustStore = KeyStore.getInstance(KeyStore.getDefaultType());
        try (InputStream inputStream = new DefaultResourceLoader().getResource(trustStorePath).getInputStream()) {
            trustStore.load(inputStream, trustStorePassword.toCharArray());
        }
    }
    if (trustStore != null) {
        sslContextFactory.setTrustStore(trustStore);
        sslContextFactory.setTrustStorePassword(trustStorePassword);
    }
    sslContextFactory.setNeedClientAuth(mutualSsl);
    sslContextFactory.setExcludeCipherSuites(excludedCipherSuites);
    // SSL Connector
    ServerConnector connector = new ServerConnector(server, new SslConnectionFactory(sslContextFactory, HttpVersion.HTTP_1_1.toString()), new HttpConnectionFactory());
    connector.setHost(address.getHostName());
    connector.setPort(address.getPort());
    server.addConnector(connector);
}

Example 83 with KeyPairGenerator

use of java.security.KeyPairGenerator in project Gradle-demo by Arisono.

the class DHUtil method initKey.

/**
	 * 甲方初始化并返回密钥对
	 */
public static Map<String, Object> initKey() throws Exception {
    //实例化密钥对生成器
    KeyPairGenerator keyPairGenerator = KeyPairGenerator.getInstance("DH");
    //初始化密钥对生成器  默认是1024  512-1024 & 64的倍数
    keyPairGenerator.initialize(1024);
    //生成密钥对
    KeyPair keyPair = keyPairGenerator.generateKeyPair();
    //得到甲方公钥
    DHPublicKey publicKey = (DHPublicKey) keyPair.getPublic();
    //得到甲方私钥
    DHPrivateKey peivateKey = (DHPrivateKey) keyPair.getPrivate();
    //将公钥和私钥封装到Map中，方便之后使用
    Map<String, Object> keyMap = new HashMap<String, Object>();
    keyMap.put(PUBLIC_KEY, publicKey);
    keyMap.put(PRIVATE_KEY, peivateKey);
    return keyMap;
}

Example 84 with KeyPairGenerator

use of java.security.KeyPairGenerator in project Gradle-demo by Arisono.

the class RSAUtils method generateKeyBytes.

/**
	 * 生成密钥对。注意这里是生成密钥对KeyPair，再由密钥对获取公私钥
	 * 生成RSA的公钥和私钥
	 * @return
	 */
public static Map<String, byte[]> generateKeyBytes() {
    try {
        KeyPairGenerator keyPairGenerator = KeyPairGenerator.getInstance(KEY_ALGORITHM);
        keyPairGenerator.initialize(KEY_SIZE);
        KeyPair keyPair = keyPairGenerator.generateKeyPair();
        RSAPublicKey publicKey = (RSAPublicKey) keyPair.getPublic();
        RSAPrivateKey privateKey = (RSAPrivateKey) keyPair.getPrivate();
        Map<String, byte[]> keyMap = new HashMap<String, byte[]>();
        keyMap.put(PUBLIC_KEY, publicKey.getEncoded());
        keyMap.put(PRIVATE_KEY, privateKey.getEncoded());
        return keyMap;
    } catch (NoSuchAlgorithmException e) {
        e.printStackTrace();
    }
    return null;
}

Example 85 with KeyPairGenerator

use of java.security.KeyPairGenerator in project geode by apache.

the class HandShake method initDHKeys.

/**
   * Initialize the Diffie-Hellman keys. This method is not thread safe
   */
public static void initDHKeys(DistributionConfig config) throws Exception {
    dhSKAlgo = config.getSecurityClientDHAlgo();
    dhPrivateKey = null;
    dhPublicKey = null;
    // that has authenticator defined.
    if ((dhSKAlgo != null && dhSKAlgo.length() > 0) || securityService.isClientSecurityRequired()) {
        KeyPairGenerator keyGen = KeyPairGenerator.getInstance("DH");
        DHParameterSpec dhSpec = new DHParameterSpec(dhP, dhG, dhL);
        keyGen.initialize(dhSpec);
        KeyPair keypair = keyGen.generateKeyPair();
        // Get the generated public and private keys
        dhPrivateKey = keypair.getPrivate();
        dhPublicKey = keypair.getPublic();
        random = new SecureRandom();
        // Force the random generator to seed itself.
        byte[] someBytes = new byte[48];
        random.nextBytes(someBytes);
    }
}