Example usage for java.security KeyPair getPublic

Introduction

In this page you can find the example usage for java.security KeyPair getPublic.

Prototype

public PublicKey getPublic() 

Source Link

Document

Returns a reference to the public key component of this key pair.

Usage

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

/**
 * ?//  ww w.ja va2s .  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;

}

---

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 ww  .j a  v a2 s  .  co  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;
}

---

From source file:com.znsx.util.licence.LicenceUtil.java

/**
 * ??/*from  ww  w. j a va  2  s.co m*/
 * 
 * @param seed
 *            ??
 * @return
 * @throws Exception
 */
public static Map<String, String> generateKey(String seed) throws Exception {
    Map<String, String> map = new HashMap<String, String>(2);
    KeyPairGenerator keygen = KeyPairGenerator.getInstance("DSA");
    SecureRandom random = new SecureRandom();
    random.setSeed(seed.getBytes("utf8"));
    keygen.initialize(1024, random);

    KeyPair keyPair = keygen.generateKeyPair();
    PublicKey publicKey = keyPair.getPublic();
    PrivateKey privateKey = keyPair.getPrivate();

    Base64 base64 = new Base64();
    String publicKeyString = new String(base64.encode(publicKey.getEncoded()), "utf8");
    String privateKeyString = new String(base64.encode(privateKey.getEncoded()), "utf8");
    // BASE64Encoder encoder = new BASE64Encoder();
    // map.put("public", encoder.encode(publicKey.getEncoded()));
    // map.put("private", encoder.encode(privateKey.getEncoded()));
    map.put("public", publicKeyString);
    map.put("private", privateKeyString);

    System.out.println("publicKey: " + map.get("public"));
    System.out.println("privateKey: " + map.get("private"));
    return map;
}

---

From source file:de.pawlidi.openaletheia.utils.CipherUtils.java

/**
 * /* ww w.  j a  v a2 s. c o  m*/
 * @param keyPair
 * @return
 */
public static String getPublicKey(KeyPair keyPair) {
    if (keyPair != null && keyPair.getPublic() != null) {
        return Converter.toString(keyPair.getPublic().getEncoded());
    }
    return null;
}

---

From source file:net.arccotangent.pacchat.filesystem.KeyManager.java

private static void generateNewKeys() {
    km_log.i("Generating new keys.");
    KeyPair keyPair = RSA.generateRSAKeypair(4096);

    assert keyPair != null;
    PrivateKey privkey = keyPair.getPrivate();
    PublicKey pubkey = keyPair.getPublic();

    saveKeys(privkey, pubkey);//from   www. j  av  a 2  s.  c o m
}

---

From source file:org.excalibur.core.util.SecurityUtils2.java

public static UserKey generateUserKey() throws Exception {
    KeyPairGenerator kpg = SecurityUtils.getKeyPairGenerator("RSA");

    kpg.initialize(1024, new SecureRandom());
    java.security.KeyPair kp = kpg.generateKeyPair();

    String priv = getKeyMaterial(kp.getPrivate());

    byte[] encoded = encode((RSAPublicKey) kp.getPublic());

    //        String pub = getKeyMaterial(kp.getPublic()).replaceAll(PUBLIC_KEY_START, "").replaceAll(PUBLIC_KEY_END, "").trim();

    return new UserKey().setPrivateKeyMaterial(priv).setPublicKeyMaterial(new String(Base64.encode(encoded)))
            .setFingerPrint(getFingerPrint((RSAPublicKey) kp.getPublic()));
}

---

From source file:com.znsx.util.licence.LicenceUtil.java

/**
 * ?DSA??p,q,g,j,x,y/*from  w w  w . ja  va2s .  c o m*/
 * 
 * @param seed
 *            ??
 * @throws Exception
 * @author huangbuji
 *         <p />
 *         Create at 2014-2-8 ?4:45:26
 */
@SuppressWarnings("restriction")
public static void genKey(String seed) throws Exception {
    KeyPairGenerator keygen = KeyPairGenerator.getInstance("DSA");
    SecureRandom random = new SecureRandom();
    random.setSeed(seed.getBytes("utf8"));
    keygen.initialize(1024, random);

    KeyPair keyPair = keygen.generateKeyPair();
    DSAPublicKeyImpl publicKey = (DSAPublicKeyImpl) keyPair.getPublic();
    DSAPrivateKey privateKey = (DSAPrivateKey) keyPair.getPrivate();
    DSAParams dsaParams = privateKey.getParams();
    Base64 base64 = new Base64();
    String p = new String(base64.encode(dsaParams.getP().toByteArray()), "utf8");
    String q = new String(base64.encode(dsaParams.getQ().toByteArray()), "utf8");
    String g = new String(base64.encode(dsaParams.getG().toByteArray()), "utf8");
    String x = new String(base64.encode(privateKey.getX().toByteArray()), "utf8");
    String y = new String(base64.encode(publicKey.getY().toByteArray()), "utf8");
    System.out.println("P: " + p);
    System.out.println("Q: " + q);
    System.out.println("G: " + g);
    System.out.println("X: " + x);
    System.out.println("Y: " + y);

    String publicKeyString = new String(base64.encode(publicKey.getEncoded()), "utf8");
    String privateKeyString = new String(base64.encode(privateKey.getEncoded()), "utf8");
    System.err.println("public: " + publicKeyString);
    System.err.println("private: " + privateKeyString);

    File publicFile = new File("D:/binPublic.ky");
    File privateFile = new File("D:/binPrivate.ky");
    FileOutputStream out = new FileOutputStream(publicFile);
    out.write(publicKey.getEncoded());
    out.flush();
    out.close();
    out = new FileOutputStream(privateFile);
    out.write(privateKey.getEncoded());
    out.flush();
    out.close();
}

---

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

/**
 * ?/*from   ww  w  .  j a  v  a  2s.  co 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:org.kaaproject.kaa.common.endpoint.security.KeyUtil.java

/**
 * Validates RSA public and private key.
 *
 * @param keyPair the keypair//  ww w  .  j  a  v  a 2s.c  o m
 * @return true if keys matches
 */
public static boolean validateKeyPair(KeyPair keyPair) {
    RSAPublicKey publicKey = (RSAPublicKey) keyPair.getPublic();
    RSAPrivateKey privateKey = (RSAPrivateKey) keyPair.getPrivate();

    if (publicKey.getModulus().bitLength() != privateKey.getModulus().bitLength()) {
        LOG.error("Keypair length matching error");
        return false;
    }

    byte[] rawPayload = new byte[64];
    new Random().nextBytes(rawPayload);

    MessageEncoderDecoder encDec = new MessageEncoderDecoder(privateKey, publicKey);
    byte[] encodedPayload;
    byte[] decodedPayload;
    try {
        encodedPayload = encDec.encodeData(rawPayload);
        decodedPayload = encDec.decodeData(encodedPayload);
    } catch (GeneralSecurityException ex) {
        LOG.error("Validation keypair error ", ex);
        return false;
    }
    return Arrays.equals(rawPayload, decodedPayload);
}

---

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

/**
 * RSA???/*from w  ww . j  av a2 s  . com*/
 * <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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