Example usage for java.security KeyPairGenerator genKeyPair

Introduction

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

Prototype

public final KeyPair genKeyPair() 

Source Link

Document

Generates a key pair.

Usage

From source file:net.padlocksoftware.padlock.KeyManager.java

/**
 * Create a 1024 bit DSA KeyPair./*from  w ww  .  j  a v a2s.c o m*/
 * @return A newly created DSA KeyPair.
 */
public static KeyPair createKeyPair() {
    KeyPair pair = null;

    try {
        KeyPairGenerator keyGen = KeyPairGenerator.getInstance("DSA");
        keyGen.initialize(1024);
        pair = keyGen.genKeyPair();
    } catch (NoSuchAlgorithmException ex) {
        Logger.getLogger(KeyManager.class.getName()).log(Level.SEVERE, null, ex);
    }

    return pair;
}

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From source file:org.kde.kdeconnect.Helpers.SecurityHelpers.RsaHelper.java

public static void initialiseRsaKeys(Context context) {
    SharedPreferences settings = PreferenceManager.getDefaultSharedPreferences(context);

    if (!settings.contains("publicKey") || !settings.contains("privateKey")) {

        KeyPair keyPair;// w  ww .  j  a v  a2s  .c  o  m
        try {
            KeyPairGenerator keyGen = KeyPairGenerator.getInstance("RSA");
            keyGen.initialize(2048);
            keyPair = keyGen.genKeyPair();
        } catch (Exception e) {
            e.printStackTrace();
            Log.e("KDE/initializeRsaKeys", "Exception");
            return;
        }

        byte[] publicKey = keyPair.getPublic().getEncoded();
        byte[] privateKey = keyPair.getPrivate().getEncoded();

        SharedPreferences.Editor edit = settings.edit();
        edit.putString("publicKey", Base64.encodeToString(publicKey, 0).trim() + "\n");
        edit.putString("privateKey", Base64.encodeToString(privateKey, 0));
        edit.apply();

    }

}

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From source file:edu.stanford.mobisocial.dungbeetle.DBIdentityProvider.java

public static KeyPair generateKeyPair() {
    try {/* w w  w. jav  a2  s  .c  om*/
        // Generate a 1024-bit Digital Signature Algorithm (RSA) key pair
        KeyPairGenerator keyGen = KeyPairGenerator.getInstance("RSA");
        keyGen.initialize(1024);
        return keyGen.genKeyPair();
    } catch (java.security.NoSuchAlgorithmException e) {
        throw new IllegalStateException("Failed to generate key pair! " + e);
    }
}

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From source file:org.computerist.ssltools.zap.ZapSslCertificateUtils.java

/**
 * Creates a new Root CA certificate and returns private and public key as
 * {@link KeyStore}. The {@link KeyStore#getDefaultType()} is used.
 *
 * @return/*from w w  w .j  a v  a2s  .  c  o m*/
 * @throws NoSuchAlgorithmException If no providers are found
 * for 'RSA' key pair generator
 * or 'SHA1PRNG' Secure random number generator
 * @throws IllegalStateException in case of errors during assembling {@link KeyStore}
 */
public static final KeyStore createRootCA() throws NoSuchAlgorithmException {
    final Date startDate = Calendar.getInstance().getTime();
    final Date expireDate = new Date(startDate.getTime() + (DEFAULT_VALID_DAYS * 24L * 60L * 60L * 1000L));

    final KeyPairGenerator g = KeyPairGenerator.getInstance("RSA");
    g.initialize(2048, SecureRandom.getInstance("SHA1PRNG"));
    final KeyPair keypair = g.genKeyPair();
    final PrivateKey privKey = keypair.getPrivate();
    final PublicKey pubKey = keypair.getPublic();
    Random rnd = new Random();

    // using the hash code of the user's name and home path, keeps anonymity
    // but also gives user a chance to distinguish between each other
    X500NameBuilder namebld = new X500NameBuilder(BCStyle.INSTANCE);
    namebld.addRDN(BCStyle.CN, "OWASP Zed Attack Proxy Root CA");
    namebld.addRDN(BCStyle.L, Integer.toHexString(System.getProperty("user.name").hashCode())
            + Integer.toHexString(System.getProperty("user.home").hashCode()));
    namebld.addRDN(BCStyle.O, "OWASP Root CA");
    namebld.addRDN(BCStyle.OU, "OWASP ZAP Root CA");
    namebld.addRDN(BCStyle.C, "xx");

    X509v3CertificateBuilder certGen = new JcaX509v3CertificateBuilder(namebld.build(),
            BigInteger.valueOf(rnd.nextInt()), startDate, expireDate, namebld.build(), pubKey);

    KeyStore ks = null;
    try {
        certGen.addExtension(X509Extension.subjectKeyIdentifier, false,
                new SubjectKeyIdentifierStructure(pubKey));
        certGen.addExtension(X509Extension.basicConstraints, true, new BasicConstraints(true));
        certGen.addExtension(X509Extension.keyUsage, false,
                new KeyUsage(KeyUsage.keyCertSign | KeyUsage.digitalSignature | KeyUsage.keyEncipherment
                        | KeyUsage.dataEncipherment | KeyUsage.cRLSign));

        Vector<DERObject> eku = new Vector<>(3, 1);
        eku.add(KeyPurposeId.id_kp_serverAuth);
        eku.add(KeyPurposeId.id_kp_clientAuth);
        eku.add(KeyPurposeId.anyExtendedKeyUsage);
        certGen.addExtension(X509Extension.extendedKeyUsage, false, new ExtendedKeyUsage(eku));

        final ContentSigner sigGen = new JcaContentSignerBuilder("SHA1WithRSAEncryption").setProvider("BC")
                .build(privKey);
        final X509Certificate cert = new JcaX509CertificateConverter().setProvider("BC")
                .getCertificate(certGen.build(sigGen));

        ks = KeyStore.getInstance(KeyStore.getDefaultType());
        ks.load(null, null);
        ks.setKeyEntry(FixedSslCertificateService.ZAPROXY_JKS_ALIAS, privKey,
                FixedSslCertificateService.PASSPHRASE, new Certificate[] { cert });
    } catch (final Exception e) {
        throw new IllegalStateException("Errors during assembling root CA.", e);
    }
    return ks;
}

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From source file:io.vertx.config.vault.utils.Certificates.java

/**
 * See https://www.cryptoworkshop.com/guide/, chapter 3
 *
 * @return A 4096-bit RSA keypair//from  w ww  .ja  v  a2s.  c  om
 * @throws NoSuchAlgorithmException
 */
private static KeyPair generateKeyPair() throws NoSuchAlgorithmException {
    final KeyPairGenerator keyPairGenerator = KeyPairGenerator.getInstance("RSA", new BouncyCastleProvider());
    keyPairGenerator.initialize(4096);
    return keyPairGenerator.genKeyPair();
}

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From source file:org.zaproxy.zap.extension.dynssl.SslCertificateUtils.java

/**
 * Creates a new Root CA certificate and returns private and public key as
 * {@link KeyStore}. The {@link KeyStore#getDefaultType()} is used.
 *
 * @return/* w w w .j av  a2 s.  c  om*/
 * @throws NoSuchAlgorithmException If no providers are found
 * for 'RSA' key pair generator
 * or 'SHA1PRNG' Secure random number generator
 * @throws IllegalStateException in case of errors during assembling {@link KeyStore}
 */
public static final KeyStore createRootCA() throws NoSuchAlgorithmException {
    final Date startDate = Calendar.getInstance().getTime();
    final Date expireDate = new Date(startDate.getTime() + (DEFAULT_VALID_DAYS * 24L * 60L * 60L * 1000L));

    final KeyPairGenerator g = KeyPairGenerator.getInstance("RSA");
    g.initialize(2048, SecureRandom.getInstance("SHA1PRNG"));
    final KeyPair keypair = g.genKeyPair();
    final PrivateKey privKey = keypair.getPrivate();
    final PublicKey pubKey = keypair.getPublic();
    Security.addProvider(new BouncyCastleProvider());
    Random rnd = new Random();

    // using the hash code of the user's name and home path, keeps anonymity
    // but also gives user a chance to distinguish between each other
    X500NameBuilder namebld = new X500NameBuilder(BCStyle.INSTANCE);
    namebld.addRDN(BCStyle.CN, "OWASP Zed Attack Proxy Root CA");
    namebld.addRDN(BCStyle.L, Integer.toHexString(System.getProperty("user.name").hashCode())
            + Integer.toHexString(System.getProperty("user.home").hashCode()));
    namebld.addRDN(BCStyle.O, "OWASP Root CA");
    namebld.addRDN(BCStyle.OU, "OWASP ZAP Root CA");
    namebld.addRDN(BCStyle.C, "xx");

    X509v3CertificateBuilder certGen = new JcaX509v3CertificateBuilder(namebld.build(),
            BigInteger.valueOf(rnd.nextInt()), startDate, expireDate, namebld.build(), pubKey);

    KeyStore ks = null;
    try {
        certGen.addExtension(Extension.subjectKeyIdentifier, false,
                new SubjectKeyIdentifier(pubKey.getEncoded()));
        certGen.addExtension(Extension.basicConstraints, true, new BasicConstraints(true));
        certGen.addExtension(Extension.keyUsage, false,
                new KeyUsage(KeyUsage.keyCertSign | KeyUsage.digitalSignature | KeyUsage.keyEncipherment
                        | KeyUsage.dataEncipherment | KeyUsage.cRLSign));

        KeyPurposeId[] eku = { KeyPurposeId.id_kp_serverAuth, KeyPurposeId.id_kp_clientAuth,
                KeyPurposeId.anyExtendedKeyUsage };
        certGen.addExtension(Extension.extendedKeyUsage, false, new ExtendedKeyUsage(eku));

        final ContentSigner sigGen = new JcaContentSignerBuilder("SHA256WithRSAEncryption").setProvider("BC")
                .build(privKey);
        final X509Certificate cert = new JcaX509CertificateConverter().setProvider("BC")
                .getCertificate(certGen.build(sigGen));

        ks = KeyStore.getInstance(KeyStore.getDefaultType());
        ks.load(null, null);
        ks.setKeyEntry(SslCertificateService.ZAPROXY_JKS_ALIAS, privKey, SslCertificateService.PASSPHRASE,
                new Certificate[] { cert });
    } catch (final Exception e) {
        throw new IllegalStateException("Errors during assembling root CA.", e);
    }
    return ks;
}

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From source file:org.kaaproject.kaa.common.endpoint.security.KeyUtil.java

/**
 * Generates a key pair.//from  w w  w .j  av a 2  s  .co m
 *
 * @return key pair
 * @throws NoSuchAlgorithmException no such algorithm
 */
public static KeyPair generateKeyPair() throws NoSuchAlgorithmException {
    KeyPairGenerator clientKeyGen = KeyPairGenerator.getInstance(RSA);
    clientKeyGen.initialize(2048);
    return clientKeyGen.genKeyPair();
}

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From source file:br.edu.ufcg.lsd.commune.network.signature.Util.java

public static KeyPair generateKeyPair() {
    KeyPairGenerator keyGen;
    try {//from   www .j av  a  2  s.  co  m
        keyGen = KeyPairGenerator.getInstance(SignatureConstants.KEY_GEN_ALGORITHM);
    } catch (NoSuchAlgorithmException e) {
        //We're assuming that we are always using a valid algorithm
        throw new CommuneRuntimeException(e);
    }
    keyGen.initialize(SignatureConstants.KEYSIZE);
    return keyGen.genKeyPair();
}

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From source file:im.whistle.crypt.Crypt.java

/**
 * Generates a private/public key pair.//from  w  w w .  j a v  a  2  s  .c  om
 * @param args Arguments, element at 0 is the key size
 * @param callback Callback
 */
public static void genkeys(JSONArray args, AsyncCallback<JSONArray> callback) {
    try {
        Log.i("whistle", "Generating key pair ...");
        PRNGProvider.init(); // Ensure OpenSSL fix
        KeyPairGenerator keyPairGenerator = KeyPairGenerator.getInstance("RSA");
        int bits = args.getInt(0);
        int exp = args.getInt(1);
        keyPairGenerator.initialize(new RSAKeyGenParameterSpec(bits, BigInteger.valueOf(exp)));
        KeyPair keyPair = keyPairGenerator.genKeyPair();
        String priv = "-----BEGIN RSA PRIVATE KEY-----\n"
                + Base64.encodeToString(keyPair.getPrivate().getEncoded(), Base64.DEFAULT).trim()
                + "\n-----END RSA PRIVATE KEY-----";
        String pub = "-----BEGIN PUBLIC KEY-----\n"
                + Base64.encodeToString(keyPair.getPublic().getEncoded(), Base64.DEFAULT).trim()
                + "\n-----END PUBLIC KEY-----";
        JSONArray res = new JSONArray();
        res.put(priv);
        res.put(pub);
        callback.success(res);
    } catch (Exception ex) {
        Log.w("whistle", "Key pair generation failed: " + ex.getMessage());
        callback.error(ex);
    }
}

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From source file:info.magnolia.cms.security.SecurityUtil.java

public static MgnlKeyPair generateKeyPair(int keyLength) throws NoSuchAlgorithmException {
    KeyPairGenerator kgen = KeyPairGenerator.getInstance(ALGORITHM);
    kgen.initialize(keyLength);//from w w w.  ja  v a 2 s.c om
    KeyPair key = kgen.genKeyPair();
    return new MgnlKeyPair(byteArrayToHex(key.getPrivate().getEncoded()),
            byteArrayToHex(key.getPublic().getEncoded()));
}

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