Example usage for java.security SecureRandom getSeed

Introduction

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

Prototype

public static byte[] getSeed(int numBytes) 

Source Link

Document

Returns the given number of seed bytes, computed using the seed generation algorithm that this class uses to seed itself.

Usage

From source file:MainClass.java

public static void main(String args[]) throws Exception {
    SecureRandom ran = SecureRandom.getInstance("SHA1PRNG", "SUN");
    ran.setSeed(101L);//ww w . ja va2s  .  c  om
    ran.setSeed(101L);
    byte[] seeds = ran.getSeed(24);
    for (int i = 0; i < seeds.length; i++) {
        System.out.println("Seed[" + i + "]:" + seeds[i]);
    }
}

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From source file:Main.java

public static void main(String[] argv) throws Exception {

    System.out.println(Arrays.toString(SecureRandom.getSeed(8)));
}

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From source file:org.linguafranca.pwdb.kdbx.dom.DomSerializableDatabase.java

public static DomSerializableDatabase createEmptyDatabase() throws IOException {
    DomSerializableDatabase result = new DomSerializableDatabase();
    // read in the template KeePass XML database
    result.load(result.getClass().getClassLoader().getResourceAsStream("base.kdbx.xml"));
    try {//from   w ww . j  av  a 2  s . c om
        // replace all placeholder dates with now
        String now = DomHelper.dateFormatter.format(new Date());
        NodeList list = (NodeList) DomHelper.xpath.evaluate("//*[contains(text(),'${creationDate}')]",
                result.doc.getDocumentElement(), XPathConstants.NODESET);
        for (int i = 0; i < list.getLength(); i++) {
            list.item(i).setTextContent(now);
        }
        // set the root group UUID
        Node uuid = (Node) DomHelper.xpath.evaluate("//" + DomHelper.UUID_ELEMENT_NAME,
                result.doc.getDocumentElement(), XPathConstants.NODE);
        uuid.setTextContent(DomHelper.base64RandomUuid());
    } catch (XPathExpressionException e) {
        throw new IllegalStateException(e);
    }
    result.setEncryption(new Salsa20StreamEncryptor(SecureRandom.getSeed(32)));
    return result;
}

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From source file:org.archive.crawler.selftest.SelfTestBase.java

protected void startHeritrix(String path) throws Exception {
    String authPassword = (new BigInteger(SecureRandom.getSeed(16))).abs().toString(16);
    String[] args = { "-j", path + "/jobs", "-a", authPassword };
    // TODO: add auth password? 
    heritrix = new Heritrix();
    heritrix.instanceMain(args);//  w ww.  ja v  a 2 s.  c o  m

    configureHeritrix();

    heritrix.getEngine().requestLaunch("selftest-job");
}

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From source file:ch.bfh.evoting.alljoyn.MessageEncrypter.java

/**
 * Generate a salt that will be used in the symmetric key derivation
 *///from w w w.  j  a  v a 2 s.  c  o m
public void generateSalt() {

    this.salt = SecureRandom.getSeed(8);
    this.derivateKey(password.toCharArray());

    Log.d(TAG, "Salt is " + salt);
}

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