Example usage for java.security SecureRandom SecureRandom

Introduction

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

Prototype

public SecureRandom() 

Source Link

Document

Constructs a secure random number generator (RNG) implementing the default random number algorithm.

Usage

From source file:com.vmware.identity.sts.auth.impl.UserCertAuthenticatorTest.java

@BeforeClass
public static void setUp() throws Exception {
    // create key pair and client private key, certificate
    KeyPairGenerator keyGen = KeyPairGenerator.getInstance("RSA");
    keyGen.initialize(1024, new SecureRandom());
    KeyPair userKeyPair = keyGen.generateKeyPair();
    userPrivateKey = (RSAPrivateKey) userKeyPair.getPrivate();
    x509Certificate = generateCertificate(userKeyPair, "User");
}

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From source file:com.vmware.identity.openidconnect.client.TestUtils.java

static X509Certificate generateCertificate(KeyPair keyPair, String dn, String subjectAltName) throws Exception {
    ContentSigner sigGen = new JcaContentSignerBuilder("SHA1withRSA").build(keyPair.getPrivate());

    Date startDate = new Date(System.currentTimeMillis() - 24 * 60 * 60 * 1000);
    Date endDate = new Date(System.currentTimeMillis() + 365 * 24 * 60 * 60 * 1000);

    X509v3CertificateBuilder v3CertGen = new JcaX509v3CertificateBuilder(new X500Name("CN=" + dn),
            new BigInteger(64, new SecureRandom()), startDate, endDate, new X500Name("CN=" + dn),
            keyPair.getPublic());//from ww w.  j  av  a2  s . c  om
    if (subjectAltName != null) {
        v3CertGen
                .addExtension(Extension.subjectAlternativeName, true,
                        new GeneralNames(new GeneralName(GeneralName.otherName,
                                new DERSequence(new ASN1Encodable[] {
                                        new DERObjectIdentifier("1.3.6.1.4.1.311.20.2.3"),
                                        new DERTaggedObject(true, 0, new DERUTF8String(subjectAltName)) }))));
    }

    X509CertificateHolder certHolder = v3CertGen.build(sigGen);
    X509Certificate x509Certificate = new JcaX509CertificateConverter().getCertificate(certHolder);
    return x509Certificate;
}

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From source file:com.thoughtworks.go.security.DESCipherProvider.java

private byte[] generateKey() {
    SecureRandom random = new SecureRandom();
    random.setSeed(UUID.randomUUID().toString().getBytes());
    KeyGenerationParameters generationParameters = new KeyGenerationParameters(random,
            DESParameters.DES_KEY_LENGTH * 8);
    DESKeyGenerator generator = new DESKeyGenerator();
    generator.init(generationParameters);
    return generator.generateKey();
}

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From source file:Controlador.ControladorUsuario.java

/**
 * Crea un codigo de recuperacion para el usuario, actualiza el usuario en
 * la BD con el codigo creado y la fecha de la creacion.
 *
 * @param u El usuario./*w  w  w  .j a va  2 s  .c om*/
 * @return El codigo creado.
 */
public String crearCodigoRecuperacion(Usuario u) {
    SecureRandom random = new SecureRandom();
    String codigo = new BigInteger(130, random).toString(32);
    u.setCodigo(codigo);
    Date d = new Date();
    u.setFechaCreacionCodigo(d);
    usuarioDAO.actualizar(u);
    return codigo;
}

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From source file:hudson.scm.credential.SshPublicKeyCredential.java

/**
 * @param keyFile stores SSH private key. The file will be copied.
 *//* w ww.j  a v a 2 s.c om*/
public SshPublicKeyCredential(String userName, String passphrase, File keyFile) throws SVNException {
    this.userName = userName;
    this.passphrase = Scrambler.scramble(passphrase);

    SecureRandom r = new SecureRandom();
    StringBuilder buf = new StringBuilder();
    for (int i = 0; i < 16; i++) {
        buf.append(Integer.toHexString(r.nextInt(16)));
    }
    this.id = buf.toString();

    try {
        File savedKeyFile = getKeyFile();
        System.out.println(keyFile.getAbsolutePath());
        System.out.println(savedKeyFile.getAbsolutePath());
        FileUtils.copyFile(keyFile, savedKeyFile);
        setFilePermissions(savedKeyFile, "600");
    } catch (IOException e) {
        throw new SVNException(SVNErrorMessage.create(SVNErrorCode.AUTHN_CREDS_UNAVAILABLE,
                Messages.SshPublicKeyCredential_private_key_save_error()), e);
    }
}

---

From source file:com.bitsofproof.supernode.core.IRCDiscovery.java

@Override
public List<InetSocketAddress> discover() {
    List<InetSocketAddress> al = new ArrayList<InetSocketAddress>();

    try {/*www .j  a v a 2s .co m*/
        log.trace("Connect to IRC server " + server);
        Socket socket = new Socket(server, port);
        PrintWriter writer = new PrintWriter(new OutputStreamWriter(socket.getOutputStream(), "UTF-8"));
        BufferedReader reader = new BufferedReader(new InputStreamReader(socket.getInputStream(), "UTF-8"));

        String[] answers = new String[] { "Found your hostname", "using your IP address instead",
                "Couldn't look up your hostname", "ignoring hostname" };
        String line;
        boolean stop = false;
        while (!stop && (line = reader.readLine()) != null) {
            log.trace("IRC receive " + line);
            for (int i = 0; i < answers.length; ++i) {
                if (line.contains(answers[i])) {
                    stop = true;
                    break;
                }
            }
        }

        String nick = "bop" + new SecureRandom().nextInt(Integer.MAX_VALUE);
        writer.println("NICK " + nick);
        writer.println("USER " + nick + " 8 * : " + nick);
        writer.flush();
        log.trace("IRC send: I am " + nick);

        while ((line = reader.readLine()) != null) {
            log.trace("IRC receive " + line);
            if (hasCode(line, new String[] { " 004 ", " 433 " })) {
                break;
            }
        }
        log.trace("IRC send: joining " + channel);
        writer.println("JOIN " + channel);
        writer.println("NAMES");
        writer.flush();
        while ((line = reader.readLine()) != null) {
            log.trace("IRC receive " + line);
            if (hasCode(line, new String[] { " 353 " })) {
                StringTokenizer tokenizer = new StringTokenizer(line, ":");
                String t = tokenizer.nextToken();
                if (tokenizer.hasMoreElements()) {
                    t = tokenizer.nextToken();
                }
                tokenizer = new StringTokenizer(t);
                tokenizer.nextToken();
                while (tokenizer.hasMoreTokens()) {
                    String w = tokenizer.nextToken().substring(1);
                    if (!tokenizer.hasMoreElements()) {
                        continue;
                    }
                    try {
                        byte[] m = ByteUtils.fromBase58WithChecksum(w);
                        byte[] addr = new byte[] { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, (byte) 0xff, (byte) 0xff, 0, 0,
                                0, 0 };
                        System.arraycopy(m, 0, addr, 12, 4);
                        al.add(new InetSocketAddress(InetAddress.getByAddress(addr), chain.getPort()));
                    } catch (ValidationException e) {
                        log.trace(e.toString());
                    }
                }
            }
            if (hasCode(line, new String[] { " 366 " })) {
                break;
            }
        }
        writer.println("PART " + channel);
        writer.println("QUIT");
        writer.flush();
        socket.close();
    } catch (UnknownHostException e) {
        log.error("Can not find IRC server " + server, e);
    } catch (IOException e) {
        log.error("Can not use IRC server " + server, e);
    }

    return al;
}

---

From source file:com.github.beat.signer.pdf_signer.TSAClient.java

/**
 *
 * @param messageImprint/*from w w w .jav  a  2s.com*/
 *            imprint of message contents
 * @return the encoded time stamp token
 * @throws IOException
 *             if there was an error with the connection or data from the
 *             TSA server, or if the time stamp response could not be
 *             validated
 */
public byte[] getTimeStampToken(byte[] messageImprint) throws IOException {
    digest.reset();
    byte[] hash = digest.digest(messageImprint);

    // 32-bit cryptographic nonce
    // FIXME sicher??
    SecureRandom random = new SecureRandom();
    int nonce = random.nextInt();

    // generate TSA request
    TimeStampRequestGenerator tsaGenerator = new TimeStampRequestGenerator();
    tsaGenerator.setCertReq(true);
    ASN1ObjectIdentifier oid = getHashObjectIdentifier(digest.getAlgorithm());
    TimeStampRequest request = tsaGenerator.generate(oid, hash, BigInteger.valueOf(nonce));

    // get TSA response
    byte[] tsaResponse = getTSAResponse(request.getEncoded());

    TimeStampResponse response;
    try {
        response = new TimeStampResponse(tsaResponse);
        response.validate(request);
    } catch (TSPException e) {
        throw new IOException(e);
    }

    TimeStampToken token = response.getTimeStampToken();
    if (token == null) {
        throw new IOException("Response does not have a time stamp token");
    }

    return token.getEncoded();
}

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From source file:com.mobilehelix.appserver.push.PushManager.java

@PostConstruct
public void init() {
    userPushMap = new ConcurrentHashMap<>();
    idMap = new ConcurrentHashMap<>();
    srandom = new SecureRandom();
}

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From source file:com.daoke.mobileserver.test.TestHttps.java

public static String doPost(String url, String ctype, byte[] content, int connectTimeout, int readTimeout)
        throws Exception {
    HttpsURLConnection conn = null;
    OutputStream out = null;/* ww w  .  j  av  a  2  s .  c  o  m*/
    String rsp = null;
    try {
        try {
            SSLContext ctx = SSLContext.getInstance("TLS");
            ctx.init(new KeyManager[0], new TrustManager[] { new DefaultTrustManager() }, new SecureRandom());
            SSLContext.setDefault(ctx);

            conn = getConnection(new URL(url), METHOD_POST, ctype);
            conn.setHostnameVerifier(new HostnameVerifier() {
                @Override
                public boolean verify(String hostname, SSLSession session) {
                    return true;
                }
            });
            conn.setConnectTimeout(connectTimeout);
            conn.setReadTimeout(readTimeout);
        } catch (Exception e) {
            log.error("GET_CONNECTOIN_ERROR, URL = " + url, e);
            throw e;
        }
        try {
            out = conn.getOutputStream();
            out.write(content);
            rsp = getResponseAsString(conn);
        } catch (IOException e) {
            log.error("REQUEST_RESPONSE_ERROR, URL = " + url, e);
            throw e;
        }

    } finally {
        if (out != null) {
            out.close();
        }
        if (conn != null) {
            conn.disconnect();
        }
    }

    return rsp;
}

---

From source file:com.stratio.qa.utils.GosecSSOUtils.java

/**
 * This method provide dcos and sso token to be used to generate client cookie
 * @return cookieToken list of token generated
 * @throws Exception exception//from   w  w  w.  j  a  v  a  2s  .  com
 */
public HashMap<String, String> ssoTokenGenerator() throws Exception {
    String protocol = "https://";
    HashMap<String, String> cookieToken = new HashMap<>();

    SSLContext sslContext = SSLContext.getInstance("SSL");
    // set up a TrustManager that trusts everything
    sslContext.init(null, ALL_TRUSTING_TRUST_MANAGER, new SecureRandom());
    HttpClientContext context = HttpClientContext.create();
    HttpGet httpGet = new HttpGet(protocol + ssoHost + "/login");
    HttpClient client = HttpClientBuilder.create().setSslcontext(sslContext)
            .setRedirectStrategy(new LaxRedirectStrategy())
            .setDefaultRequestConfig(RequestConfig.custom().setCircularRedirectsAllowed(true).build()).build();
    try {
        HttpResponse firstResponse = client.execute(httpGet, context);

        logger.debug(firstResponse.getStatusLine().toString());
        Document doc = Jsoup.parse(getStringFromIS(firstResponse.getEntity().getContent()));
        Elements code = doc.select("[name=lt]");
        String loginCode = code.attr("value");
        String executionCode = doc.select("[name=execution]").attr("value");
        for (Header oneHeader : firstResponse.getAllHeaders()) {
            logger.debug(oneHeader.getName() + ":" + oneHeader.getValue());
        }

        URI redirect = context.getRedirectLocations().get(context.getRedirectLocations().size() - 1);

        List<NameValuePair> params = new ArrayList<>();
        params.add(new BasicNameValuePair("_eventId", "submit"));
        params.add(new BasicNameValuePair("submit", "LOGIN"));
        params.add(new BasicNameValuePair("username", userName));
        params.add(new BasicNameValuePair("password", passWord));
        params.add(new BasicNameValuePair("lt", loginCode));
        params.add(new BasicNameValuePair("execution", executionCode));
        HttpPost httpPost = new HttpPost(redirect);
        httpPost.setEntity(new UrlEncodedFormEntity(params));
        HttpResponse secondResponse = client.execute(httpPost, context);

        for (Header oneHeader : secondResponse.getAllHeaders()) {
            logger.debug(oneHeader.getName() + ":" + oneHeader.getValue());
        }

        HttpGet managementGet = new HttpGet(protocol + ssoHost + managementHost);
        client.execute(managementGet, context);

        for (Cookie oneCookie : context.getCookieStore().getCookies()) {
            logger.debug(oneCookie.getName() + ":" + oneCookie.getValue());
            cookieToken.put(oneCookie.getName(), oneCookie.getValue());
        }

    } catch (Exception e) {
        e.getStackTrace();
    }
    return cookieToken;
}

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