Example usage for java.security SecureRandom getInstance

Introduction

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

Prototype

public static SecureRandom getInstance(String algorithm) throws NoSuchAlgorithmException

Source Link

Document

Returns a SecureRandom object that implements the specified Random Number Generator (RNG) algorithm.

Usage

From source file:wssec.TestWSSecurityNewSCT.java

public void testSCTKDKTSignEncrypt() {
    try {//from   w  ww .  j a  v  a 2  s. c o  m
        SOAPEnvelope unsignedEnvelope = message.getSOAPEnvelope();
        Document doc = unsignedEnvelope.getAsDocument();
        WSSecHeader secHeader = new WSSecHeader();
        secHeader.insertSecurityHeader(doc);

        WSSecSecurityContextToken sctBuilder = new WSSecSecurityContextToken();
        sctBuilder.prepare(doc, crypto);

        SecureRandom random = SecureRandom.getInstance("SHA1PRNG");
        byte[] tempSecret = new byte[16];
        random.nextBytes(tempSecret);

        // Store the secret
        this.secrets.put(sctBuilder.getIdentifier(), tempSecret);

        String tokenId = sctBuilder.getSctId();

        // Derived key signature
        WSSecDKSign sigBuilder = new WSSecDKSign();
        sigBuilder.setExternalKey(tempSecret, tokenId);
        sigBuilder.setSignatureAlgorithm(XMLSignature.ALGO_ID_MAC_HMAC_SHA1);
        sigBuilder.build(doc, secHeader);

        // Derived key encryption
        WSSecDKEncrypt encrBuilder = new WSSecDKEncrypt();
        encrBuilder.setSymmetricEncAlgorithm(WSConstants.AES_128);
        encrBuilder.setExternalKey(tempSecret, tokenId);
        encrBuilder.build(doc, secHeader);

        sctBuilder.prependSCTElementToHeader(doc, secHeader);

        if (LOG.isDebugEnabled()) {
            String outputString = org.apache.ws.security.util.XMLUtils.PrettyDocumentToString(doc);
            LOG.debug(outputString);
        }

        verify(doc);
    } catch (Exception e) {
        e.printStackTrace();
        fail(e.getMessage());
    }
}

From source file:com.streamsets.datacollector.publicrestapi.TestCredentialsDeploymentResource.java

private KeyPair generateKeys() throws Exception {
    KeyPairGenerator keyGen = KeyPairGenerator.getInstance("RSA");
    SecureRandom random = SecureRandom.getInstance("SHA1PRNG");
    keyGen.initialize(512, random);/*from  w w  w . ja v  a2s  .co m*/
    return keyGen.generateKeyPair();
}

From source file:org.apache.ofbiz.base.crypto.HashCrypt.java

private static String getSalt() {
    try {/*from   ww w .j a v  a 2  s. c om*/
        SecureRandom sr = SecureRandom.getInstance("SHA1PRNG");
        byte[] salt = new byte[16];
        sr.nextBytes(salt);
        return salt.toString();
    } catch (NoSuchAlgorithmException e) {
        throw new GeneralRuntimeException("Error while creating salt", e);
    }
}

From source file:org.killbill.billing.plugin.payeezy.client.PayeezyClientWrapper.java

private void setHeaders(final String payload, final AsyncHttpClient.BoundRequestBuilder builder) {
    builder.addHeader(APIResourceConstants.SecurityConstants.APIKEY, apiKey);
    builder.addHeader(APIResourceConstants.SecurityConstants.TOKEN, token);
    builder.addHeader(APIResourceConstants.SecurityConstants.APISECRET, secret);

    builder.addHeader("User-Agent", "KillBill 1.0");
    builder.addHeader("Content-Type", "application/json");

    final long nonce;
    try {/*from   w  ww  .ja v  a2  s  .  co m*/
        final SecureRandom sha1PRNG = SecureRandom.getInstance(SHA1_PRNG);
        nonce = Math.abs(sha1PRNG.nextLong());
    } catch (final NoSuchAlgorithmException e) {
        throw new RuntimeException(e);
    }
    final String nonceString = Long.toString(nonce);
    builder.addHeader(APIResourceConstants.SecurityConstants.NONCE, nonceString);

    final String timestamp = Long.toString(System.currentTimeMillis());
    builder.addHeader(APIResourceConstants.SecurityConstants.TIMESTAMP, timestamp);

    try {
        builder.addHeader(APIResourceConstants.SecurityConstants.AUTHORIZE,
                getMacValue(nonceString, timestamp, payload));
    } catch (final Exception e) {
        logger.warn("Unable to compute HMAC header", e);
    }
}

From source file:org.eclipse.thym.ios.core.pbxproject.PBXProject.java

public static String generateReference() {
    try {//w  ww .j a  va2 s. c om
        MessageDigest md = MessageDigest.getInstance("SHA1");
        SecureRandom prng = SecureRandom.getInstance("SHA1PRNG");
        String randomNum = Integer.toString(prng.nextInt());
        String ref = new String(Hex.encodeHex(md.digest(randomNum.getBytes())));
        return ref.toUpperCase().substring(0, 24);
    } catch (NoSuchAlgorithmException e) {
        return null;
    }
}

From source file:org.jboss.tools.aerogear.hybrid.ios.core.pbxproject.PBXProject.java

public static String generateReference() {
    MessageDigest md = null;/*ww  w .  jav  a 2  s .com*/
    SecureRandom prng = null;
    try {
        md = MessageDigest.getInstance("SHA1");
        prng = SecureRandom.getInstance("SHA1PRNG");
    } catch (NoSuchAlgorithmException e) {
    }

    String randomNum = new Integer(prng.nextInt()).toString();
    String ref = new String(Hex.encodeHex(md.digest(randomNum.getBytes())));
    return ref.toUpperCase().substring(0, 24);
}

From source file:org.moe.document.pbxproj.ProjectFile.java

private String generateReference() {
    MessageDigest md;//from  ww w  .  j  a  va  2  s  .  c  om
    SecureRandom prng;
    try {
        md = MessageDigest.getInstance("SHA1");
        prng = SecureRandom.getInstance("SHA1PRNG");
    } catch (NoSuchAlgorithmException e) {
        throw new RuntimeException("Random generator failed", e);
    }

    String randomNum = Integer.toString(prng.nextInt());
    String ref = new String(Hex.encodeHex(md.digest(randomNum.getBytes())));
    return ref.toUpperCase().substring(0, 24);
}

From source file:whitelabel.cloud.wsclient.WebServiceAuthenticator.java

/**
  * Generate a nonce of the given length using the SHA1PRNG algorithm.
  * The SecureRandom instance that backs this method is cached for efficiency.
  *//from w  w w.  ja  va 2 s.  c o m
  * @return a nonce of the given length
  * @throws WSSecurityException
  */
private final String generateNonceBase64(int length) {
    try {
        if (random == null) {
            random = SecureRandom.getInstance("SHA1PRNG");
            random.setSeed(System.currentTimeMillis());
        }
        byte[] temp = new byte[length];
        random.nextBytes(temp);

        //return temp;
        return new String(Base64.encode(temp));
    } catch (Exception ex) {
        throw new RuntimeException("Error in generating nonce of length " + length, ex);
    }
}

From source file:utils.Hash.java

/**
 * Creates a psedorandom string//w w  w .ja  va2 s .  com
 * @return Random String
 */
public static String randomString() {
    String result = new String();
    try {
        byte byteArray[] = new byte[16];
        SecureRandom psn1 = SecureRandom.getInstance("SHA1PRNG");
        psn1.setSeed(psn1.nextLong());
        psn1.nextBytes(byteArray);
        BigInteger bigInt = new BigInteger(byteArray);
        result = bigInt.toString();
        log.debug("Generated String = " + result);

    } catch (Exception e) {
        log.error("Random Number Error : " + e.toString());
    }
    return result;
}

From source file:com.glaf.core.security.SecurityUtils.java

/**
 * //from  w w w .  jav a 2  s . c  o  m
 * 
 * @param ctx
 *            
 * @param cipherContent
 *            
 * @param key
 *            
 * @return byte[] ?
 * 
 */
public static byte[] symmetryDecrypt(SecurityContext ctx, byte[] cipherContent, Key key) {
    try {
        byte[] tContent = null;
        Cipher cipher = Cipher.getInstance(ctx.getSymmetryAlgorithm(), ctx.getJceProvider());
        SecureRandom secureRandom = SecureRandom.getInstance(ctx.getSecureRandomAlgorithm());
        cipher.init(Cipher.DECRYPT_MODE, key, secureRandom);
        tContent = cipher.doFinal(cipherContent);
        return tContent;
    } catch (Exception ex) {
        throw new SecurityException(ex);
    }
}