Example usage for java.security KeyPairGenerator generateKeyPair

Introduction

In this page you can find the example usage for java.security KeyPairGenerator generateKeyPair.

Prototype

public KeyPair generateKeyPair() 

Source Link

Document

Generates a key pair.

Usage

From source file:cloudeventbus.pki.CertificateUtils.java

public static KeyPair generateKeyPair() {
    try {//from w w  w.  j av a2s .  c  o  m
        final KeyPairGenerator keyPairGenerator = KeyPairGenerator.getInstance("RSA");
        keyPairGenerator.initialize(KEY_SIZE);
        return keyPairGenerator.generateKeyPair();
    } catch (NoSuchAlgorithmException e) {
        throw new RuntimeException(e);
    }
}

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From source file:it.geosolutions.sfs.web.Start.java

private static void assureSelfSignedServerCertificate(String hostname, File keyStoreFile, String password)
        throws Exception {

    KeyStore privateKS = KeyStore.getInstance("JKS");
    if (keyStoreFile.exists()) {
        FileInputStream fis = new FileInputStream(keyStoreFile);
        privateKS.load(fis, password.toCharArray());
        if (keyStoreContainsCertificate(privateKS, hostname))
            return;
    } else {/*from w w w.  j ava 2  s. co  m*/
        privateKS.load(null);
    }

    // create a RSA key pair generator using 1024 bits

    KeyPairGenerator keyPairGenerator = KeyPairGenerator.getInstance("RSA");
    keyPairGenerator.initialize(1024);
    KeyPair KPair = keyPairGenerator.generateKeyPair();

    // cerate a X509 certifacte generator
    //       X509V3CertificateGenerator v3CertGen = new X509V3CertificateGenerator();  

    // set validity to 10 years, issuer and subject are equal --> self singed certificate
    int random = new SecureRandom().nextInt();
    if (random < 0)
        random *= -1;
    //       v3CertGen.setSerialNumber(BigInteger.valueOf(random));  
    //            v3CertGen.setIssuerDN(new X509Principal("CN=" + hostname + ", 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=" + hostname + ", OU=None, O=None L=None, C=None"));
    //                        
    //            v3CertGen.setPublicKey(KPair.getPublic());  
    //            v3CertGen.setSignatureAlgorithm("MD5WithRSAEncryption");   
    //            
    //            X509Certificate PKCertificate = v3CertGen.generateX509Certificate(KPair.getPrivate());
    //            
    // store the certificate containing the public key,this file is needed
    // to import the public key in other key store. 
    File certFile = new File(keyStoreFile.getParentFile(), hostname + ".cert");
    FileOutputStream fos = new FileOutputStream(certFile.getAbsoluteFile());
    //            fos.write(PKCertificate.getEncoded());  
    fos.close();

    //            privateKS.setKeyEntry(hostname+".key", KPair.getPrivate(),  
    //                    password.toCharArray(),  
    //                    new java.security.cert.Certificate[]{PKCertificate});
    //            
    //            privateKS.setCertificateEntry(hostname+".cert",PKCertificate); 

    privateKS.store(new FileOutputStream(keyStoreFile), password.toCharArray());
}

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From source file:hh.learnj.test.license.test.rsacoder.RSACoder.java

/**
 * ?//from  w  w w.  j a v  a 2  s.  c o m
 * 
 * @return Map Map
 */
public static Map<String, Object> initKey() throws Exception {
    // ?
    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
    Map<String, Object> keyMap = new HashMap<String, Object>();
    keyMap.put(PUBLIC_KEY, publicKey);
    keyMap.put(PRIVATE_KEY, privateKey);
    return keyMap;

}

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From source file:com.github.aynu.mosir.core.standard.util.SecurityHelper.java

/**
 * RSA???/*w ww . ja  v  a  2  s . c  om*/
 * <dl>
 * <dt>?
 * <dd>RSA??????2048??????
 * </dl>
 * @return RSA?
 */
public static KeyPair createKeyPair() {
    try {
        final KeyPairGenerator generator = KeyPairGenerator.getInstance(ALGO_KEY);
        generator.initialize(2048);
        final KeyPair pair = generator.generateKeyPair();
        if (LOG.isDebugEnabled()) {
            final RSAPublicKey publicKey = (RSAPublicKey) pair.getPublic();
            final RSAPrivateKey privateKey = (RSAPrivateKey) pair.getPrivate();
            LOG.debug("public-modulus={}", Base64.encodeBase64String(publicKey.getModulus().toByteArray()));
            LOG.debug("public-exponent={}",
                    Base64.encodeBase64String(publicKey.getPublicExponent().toByteArray()));
            LOG.debug("private-modulus={}", Base64.encodeBase64String(privateKey.getModulus().toByteArray()));
            LOG.debug("private-exponent={}",
                    Base64.encodeBase64String(privateKey.getPrivateExponent().toByteArray()));
        }
        return pair;
    } catch (final NoSuchAlgorithmException e) {
        throw new StandardRuntimeException(e);
    }
}

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From source file:org.mitre.jwt.signer.service.impl.KeyStoreTest.java

/**
 * Create an RSA KeyPair and insert into specified KeyStore
 * //from w w w  . ja v  a2s .  com
 * @param location
 * @param domainName
 * @param alias
 * @param keystorePassword
 * @param aliasPassword
 * @param daysNotValidBefore
 * @param daysNotValidAfter
 * @return
 * @throws GeneralSecurityException
 * @throws IOException
 */
public static java.security.KeyStore generateKeyPair(KeyStore keystore, String keyPairAlgorithm, int keySize,
        String signatureAlgorithm, String domainName, String alias, String aliasPassword,
        int daysNotValidBefore, int daysNotValidAfter) throws GeneralSecurityException, IOException {

    java.security.KeyStore ks;

    if (keystore != null) {
        ks = keystore.getKeystore();
    } else {
        ks = java.security.KeyStore.getInstance(java.security.KeyStore.getDefaultType());
        ks.load(null, null);
    }

    KeyPairGenerator rsaKeyPairGenerator = null;

    rsaKeyPairGenerator = KeyPairGenerator.getInstance(keyPairAlgorithm);

    rsaKeyPairGenerator.initialize(keySize);
    KeyPair rsaKeyPair = rsaKeyPairGenerator.generateKeyPair();

    // BC sez X509V3CertificateGenerator is deprecated and the docs say to
    // use another, but it seemingly isn't included jar...
    X509V3CertificateGenerator v3CertGen = createCertificate(domainName, daysNotValidBefore, daysNotValidAfter);

    PrivateKey privateKey = rsaKeyPair.getPrivate();

    v3CertGen.setPublicKey(rsaKeyPair.getPublic());
    v3CertGen.setSignatureAlgorithm(signatureAlgorithm);

    // BC docs say to use another, but it seemingly isn't included...
    X509Certificate certificate = v3CertGen.generateX509Certificate(privateKey);

    // if exist, overwrite
    ks.setKeyEntry(alias, privateKey, aliasPassword.toCharArray(),
            new java.security.cert.Certificate[] { certificate });

    if (keystore != null) {
        keystore.setKeystore(ks);
    }

    return ks;
}

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From source file:net.solarnetwork.node.setup.test.DefaultSetupServiceTest.java

@BeforeClass
public static void setupClass() throws Exception {
    KeyPairGenerator keyGen = KeyPairGenerator.getInstance("RSA");
    keyGen.initialize(2048, new SecureRandom());
    CA_KEY_PAIR = keyGen.generateKeyPair();
    CA_CERT = PKITestUtils.generateNewCACert(CA_KEY_PAIR.getPublic(), TEST_CA_DN, null,
            CA_KEY_PAIR.getPrivate(), TEST_CA_DN);
}

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From source file:org.javaweb.utils.RSAUtils.java

/**
 * ?RSA?/*www . j av a 2  s .c  o m*/
 *
 * @param keySize
 * @return
 * @throws NoSuchAlgorithmException
 */
public static KeyPair generateKey(int keySize) throws NoSuchAlgorithmException {
    KeyPairGenerator keygen = KeyPairGenerator.getInstance("RSA");
    SecureRandom random = new SecureRandom();
    keygen.initialize(keySize, random);

    return keygen.generateKeyPair();
}

---

From source file:net.solarnetwork.node.setup.test.DefaultKeystoreServiceTest.java

@BeforeClass
public static void setupClass() throws Exception {
    KeyPairGenerator keyGen = KeyPairGenerator.getInstance("RSA");
    keyGen.initialize(2048, new SecureRandom());
    CA_KEY_PAIR = keyGen.generateKeyPair();
    CA_CERT = PKITestUtils.generateNewCACert(CA_KEY_PAIR.getPublic(), TEST_CA_DN, null,
            CA_KEY_PAIR.getPrivate(), TEST_CA_DN);

    CA_SUB_KEY_PAIR = keyGen.generateKeyPair();
    CA_SUB_CERT = PKITestUtils.generateNewCACert(CA_SUB_KEY_PAIR.getPublic(), TEST_CA_SUB_DN, CA_CERT,
            CA_KEY_PAIR.getPrivate(), TEST_CA_DN);
}

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From source file:co.cask.cdap.security.tools.KeyStores.java

/**
 * Create a Java key store with a stored self-signed certificate.
 * @return Java keystore which has a self signed X.509 certificate
 */// w w w  .j a  v a2  s . c o  m
public static KeyStore generatedCertKeyStore(SConfiguration sConf, String password) {
    try {
        KeyPairGenerator keyGen = KeyPairGenerator.getInstance(KEY_PAIR_ALGORITHM);
        SecureRandom random = SecureRandom.getInstance(SECURE_RANDOM_ALGORITHM, SECURE_RANDOM_PROVIDER);
        keyGen.initialize(KEY_SIZE, random);
        // generate a key pair
        KeyPair pair = keyGen.generateKeyPair();
        int validity = sConf.getInt(Constants.Security.SSL.CERT_VALIDITY, VALIDITY);

        X509Certificate cert = getCertificate(DISTINGUISHED_NAME, pair, validity, SIGNATURE_ALGORITHM);

        KeyStore keyStore = KeyStore.getInstance(SSL_KEYSTORE_TYPE);
        keyStore.load(null, password.toCharArray());
        keyStore.setKeyEntry(CERT_ALIAS, pair.getPrivate(), password.toCharArray(),
                new java.security.cert.Certificate[] { cert });
        return keyStore;
    } catch (Exception e) {
        throw new RuntimeException(
                "SSL is enabled but a key store file could not be created. A keystore is required "
                        + "for SSL to be used.",
                e);
    }
}

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From source file:com.aaasec.sigserv.cssigapp.KeyStoreFactory.java

/**
 * Generate a 2048 bit RSA KeyPair.//from ww  w  .j  a v  a2s.c o m
 *
 * @param algorithm the algorithm to use
 * @param bits the length of the key (modulus) in bits
 *
 * @return the KeyPair
 *
 * @exception NoSuchAlgorithmException if no KeyPairGenerator is available
 * for the requested algorithm
 */
private static KeyPair generateKeyPair() throws NoSuchAlgorithmException {

    KeyPair kp = null;
    KeyPairGenerator generator;
    generator = KeyPairGenerator.getInstance("RSA");
    generator.initialize(2048);
    kp = generator.generateKeyPair();
    return kp;
}

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