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, SecureRandomParameters params)
        throws NoSuchAlgorithmException

Source Link

Document

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

Usage

From source file:org.lockss.util.urlconn.AuthSSLProtocolSocketFactory.java

SecureRandom getSecureRandom() throws NoSuchAlgorithmException, NoSuchProviderException {
    return SecureRandom.getInstance(RandomManager.DEFAULT_SECURE_RANDOM_ALGORITHM,
            RandomManager.DEFAULT_SECURE_RANDOM_PROVIDER);
}

From source file:org.alfresco.extension.countersign.signature.RepositoryManagedSignatureProvider.java

/**
 * Create a keystore for this user to be used for document signing, store it associated with the user's
 * person node/* ww w  .jav  a 2 s. c  om*/
 * 
 * @param person
 * @param password
 * 
 * @return a Java KeyStore object suitable for document signing
 * @throws NoSuchAlgorithmException 
 * @throws NoSuchProviderException 
 * @throws KeyStoreException 
 * @throws IOException 
 * @throws CertificateException 
 */
private KeyStore createUserKeyStore(NodeRef person, String password) throws NoSuchAlgorithmException,
        NoSuchProviderException, KeyStoreException, CertificateException, IOException {

    // get the alias from the configuration
    String alias = config.getProperty(RepositoryManagedSignatureProviderFactory.ALIAS);

    // initialize key generator
    KeyPairGenerator keyGen = KeyPairGenerator.getInstance("RSA");
    SecureRandom random = SecureRandom.getInstance("SHA1PRNG", "SUN");
    keyGen.initialize(2048, random);

    // generate a keypair
    KeyPair pair = keyGen.generateKeyPair();
    PrivateKey priv = pair.getPrivate();
    PublicKey pub = pair.getPublic();

    // generate the user certificate
    Certificate cert = generateCertificate(pair, person);

    // get the ca cert used to sign and create cert chain
    KeyStore trustedKs = getTrustedKeyStore();
    Certificate[] caChain = getCaCertChain(trustedKs);
    Certificate[] certChain = new Certificate[caChain.length + 1];
    certChain[0] = cert;
    for (int i = 0; i < caChain.length; i++) {
        certChain[i + 1] = caChain[i];
    }

    // create keystore, adding private key and cert chain
    KeyStore ks = KeyStore.getInstance("pkcs12");
    ks.load(null, password.toCharArray());
    ks.setKeyEntry(alias, priv, password.toCharArray(), certChain);

    // save the keystore
    saveUserKeyStore(person, ks, password);

    // also save the public key separately, will need it 
    // for later validaiton activities
    saveUserPublicKey(person, pub);

    // return the generated keystore
    return ks;

}

From source file:com.netscape.cmsutil.crypto.CryptoUtil.java

public static SecureRandom getRandomNumberGenerator() throws GeneralSecurityException {
    SecureRandom rnd = SecureRandom.getInstance("pkcs11prng", "Mozilla-JSS");

    return rnd;//from w ww  .  j  av a 2s . c om

}