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:net.firejack.platform.web.security.x509.KeyUtils.java

public static KeyPair generate(File keystore) {
    if (keystore == null) {
        throw new IllegalArgumentException("Key Store file should not be null.");
    }//from   www . j  a v a 2  s  . c om

    try {
        KeyStore ks = KeyStore.getInstance("JKS", "SUN");
        if (keystore.exists()) {
            FileInputStream stream = new FileInputStream(keystore);
            ks.load(stream, SECRET);
            IOUtils.closeQuietly(stream);
        } else {
            ks.load(null, SECRET);
        }

        if (ks.containsAlias(ALIAS)) {
            PrivateKey privateKey = (PrivateKey) ks.getKey(ALIAS, SECRET);
            PublicKey publicKey = ks.getCertificate(ALIAS).getPublicKey();
            return new KeyPair(publicKey, privateKey);
        } else {
            KeyPairGenerator generator = KeyPairGenerator.getInstance("RSA");
            generator.initialize(KEYSIZE, new SecureRandom());
            return generator.generateKeyPair();
        }
    } catch (Throwable th) {
        logger.error("Failed to initialize key store");
        throw new OpenFlameRuntimeException(th.getMessage(), th);
    }
}

From source file:org.aon.esolutions.appconfig.client.util.RSAEncryptUtil.java

public static KeyPair generateKey() throws GeneralSecurityException {
    KeyPairGenerator keyGen = KeyPairGenerator.getInstance(ALGORITHM);
    keyGen.initialize(1024);/* w w  w  .  ja v  a  2  s. co m*/
    KeyPair key = keyGen.generateKeyPair();
    return key;
}

From source file:org.umit.icm.mobile.utils.RSACrypto.java

public static KeyPair generateKey() throws Exception {

    KeyPairGenerator keyPairGen = KeyPairGenerator.getInstance("RSA");
    keyPairGen.initialize(Constants.RSA_KEY_SIZE);
    return keyPairGen.generateKeyPair();
}

From source file:org.artifactory.security.crypto.CryptoHelper.java

public static KeyPair generateKeyPair() {
    try {/* www. j av  a 2s. co  m*/
        KeyPairGenerator keyGen = KeyPairGenerator.getInstance(ASYM_ALGORITHM);
        SecureRandom random = SecureRandom.getInstance("SHA1PRNG");
        keyGen.initialize(512, random);
        return keyGen.generateKeyPair();
    } catch (NoSuchAlgorithmException e) {
        throw new IllegalArgumentException("No such algorithm:" + e.getMessage());
    }
}

From source file:net.jmhertlein.core.crypto.Keys.java

/**
 * Generates a new Elliptic Curve Digital Signature Algorithm (ECDSA) public/private key pair.
 *
 * System's default SecureRandom is used
 * @param curveName the name of a pre-defined elliptic curve (e.g. secp521r1)
 * @param provider the JCE provider to use
 * @return a new ECDSA key pair//from  www. j a  va2  s .  c  o  m
 */
public static KeyPair newECDSAKeyPair(String curveName, String provider) {
    KeyPair ret;
    try {
        ECGenParameterSpec ecGenSpec = new ECGenParameterSpec(curveName);
        KeyPairGenerator g = KeyPairGenerator.getInstance("ECDSA", provider);
        g.initialize(ecGenSpec, new SecureRandom());
        ret = g.generateKeyPair();
    } catch (NoSuchAlgorithmException | InvalidAlgorithmParameterException | NoSuchProviderException ex) {
        Logger.getLogger(Keys.class.getName()).log(Level.SEVERE, null, ex);
        ret = null;
    }

    return ret;
}

From source file:org.panbox.core.crypto.CryptCore.java

public static KeyPair generateKeypair() {
    try {//from  w w w .j  a v  a  2  s.  c  om
        KeyPairGenerator kpg = KeyPairGenerator.getInstance(KeyConstants.KEY_FACTORY, KeyConstants.PROV_BC);
        kpg.initialize(KeyConstants.ASYMMETRIC_KEYSIZE);
        KeyPair kp = kpg.generateKeyPair();
        return kp;
    } catch (NoSuchAlgorithmException e) {
        logger.error("Error during asymmetric key pair generation: " + e);
    } catch (NoSuchProviderException e) {
        logger.error("Error during asymmetric key pair generation: " + e);
    }
    return null;
}

From source file:com.security.ch08_rsa.RSACoderTextKey.java

/**
 * ?//  ww w  .  j  a  v a  2  s  .  c o  m
 *
 * @return Map Map
 * @throws Exception
 */
public static Map<String, String> initKey(UUID licenseCode) throws Exception {
    // ?
    KeyPairGenerator keyPairGen = KeyPairGenerator.getInstance(KEY_ALGORITHM);

    // ??
    //        keyPairGen.initialize(KEY_SIZE);
    keyPairGen.initialize(KEY_SIZE, new SecureRandom(licenseCode.toString().getBytes(UTF_8)));

    // ?
    KeyPair keyPair = keyPairGen.generateKeyPair();

    // 
    RSAPublicKey publicKey = (RSAPublicKey) keyPair.getPublic();

    // ?
    RSAPrivateKey privateKey = (RSAPrivateKey) keyPair.getPrivate();

    // ?
    Map<String, String> keyMap = new HashMap<String, String>();

    keyMap.put(PUBLIC_KEY, Base64.encodeBase64String(publicKey.getEncoded()));
    keyMap.put(PRIVATE_KEY, Base64.encodeBase64String(privateKey.getEncoded()));
    keyMap.put(LICENSE_CODE, licenseCode.toString());

    return keyMap;
}

From source file:com.peterphi.std.crypto.keygen.CaHelper.java

public static KeyPair generateKeyPair(int bits) throws Exception {
    KeyPairGenerator keyGen = KeyPairGenerator.getInstance("RSA", "BC");
    keyGen.initialize(bits, new SecureRandom());
    return keyGen.generateKeyPair();
}

From source file:com.aqnote.shared.cryptology.asymmetric.dsa.DSAKeyPairGenTest.java

public static void generator() throws NoSuchAlgorithmException, FileNotFoundException, IOException {
    KeyPairGenerator keygen = KeyPairGenerator.getInstance(ALGORITHM);

    // ???/*from ww  w  .  j  a v  a 2 s.c o m*/
    SecureRandom secrand = new SecureRandom();
    secrand.setSeed(seed); // ??
    // ??, ??keysize ?. 512  1024  64 ?
    keygen.initialize(512, secrand);
    // ?pubkey?prikey
    KeyPair keys = keygen.generateKeyPair(); // ?
    PublicKey pubkey = keys.getPublic();
    PrivateKey prikey = keys.getPrivate();

    byte[] pubkeyByteArray = Base64.encodeBase64(pubkey.getEncoded());
    OutputStream os = new FileOutputStream(new File(PUBKEY_FILE_NAME));
    ByteArrayInputStream bais = new ByteArrayInputStream(pubkeyByteArray);
    StreamUtil.io(bais, os);
    bais.close();
    os.close();

    byte[] prikeyByteArray = Base64.encodeBase64(prikey.getEncoded());
    os = new FileOutputStream(new File(PRIKEY_FILE_NAME));
    bais = new ByteArrayInputStream(prikeyByteArray);
    StreamUtil.io(bais, os);
    bais.close();
    os.close();
}

From source file:gemlite.core.util.RSAUtils.java

/**
 * <p>//  w w  w .  ja  v a 2  s  . co m
 * ?(?)
 * </p>
 * 
 * @return
 * @throws Exception
 */
public static Map<String, Object> genKeyPair() throws Exception {
    KeyPairGenerator keyPairGen = KeyPairGenerator.getInstance(KEY_ALGORITHM);
    keyPairGen.initialize(512);
    KeyPair keyPair = keyPairGen.generateKeyPair();
    RSAPublicKey publicKey = (RSAPublicKey) keyPair.getPublic();
    RSAPrivateKey privateKey = (RSAPrivateKey) keyPair.getPrivate();
    Map<String, Object> keyMap = new HashMap<String, Object>(2);
    keyMap.put(PUBLIC_KEY, publicKey);
    keyMap.put(PRIVATE_KEY, privateKey);
    return keyMap;
}