Examples with Instance sun.security.jca.GetInstance.Instance used on opensource projects

Example 11 with Instance

use of sun.security.jca.GetInstance.Instance in project j2objc by google.

the class SecureRandom method getInstanceFromCryptoProvider.

private static SecureRandom getInstanceFromCryptoProvider(String algorithm) throws NoSuchAlgorithmException {
    Provider cryptoProvider;
    try {
        cryptoProvider = (Provider) SecureRandom.class.getClassLoader().loadClass("org.apache.harmony.security.provider.crypto.CryptoProvider").newInstance();
    } catch (Exception e) {
        throw new RuntimeException(e);
    }
    Service service = cryptoProvider.getService("SecureRandom", algorithm);
    Instance instance = GetInstance.getInstance(service, SecureRandomSpi.class);
    return new SecureRandom((SecureRandomSpi) instance.impl, instance.provider, algorithm);
}

Example 12 with Instance

use of sun.security.jca.GetInstance.Instance in project j2objc by google.

the class Signature method getInstance.

/**
     * Returns a Signature object that implements the specified signature
     * algorithm.
     *
     * <p> This method traverses the list of registered security Providers,
     * starting with the most preferred Provider.
     * A new Signature object encapsulating the
     * SignatureSpi implementation from the first
     * Provider that supports the specified algorithm is returned.
     *
     * <p> Note that the list of registered providers may be retrieved via
     * the {@link Security#getProviders() Security.getProviders()} method.
     *
     * @param algorithm the standard name of the algorithm requested.
     * See the Signature section in the <a href=
     * "{@docRoot}openjdk-redirect.html?v=8&path=/technotes/guides/security/StandardNames.html#Signature">
     * Java Cryptography Architecture Standard Algorithm Name Documentation</a>
     * for information about standard algorithm names.
     *
     * @return the new Signature object.
     *
     * @exception NoSuchAlgorithmException if no Provider supports a
     *          Signature implementation for the
     *          specified algorithm.
     *
     * @see Provider
     */
public static Signature getInstance(String algorithm) throws NoSuchAlgorithmException {
    List<Service> list;
    if (algorithm.equalsIgnoreCase(RSA_SIGNATURE)) {
        list = GetInstance.getServices(rsaIds);
    } else {
        list = GetInstance.getServices("Signature", algorithm);
    }
    Iterator<Service> t = list.iterator();
    if (t.hasNext() == false) {
        throw new NoSuchAlgorithmException(algorithm + " Signature not available");
    }
    // try services until we find an Spi or a working Signature subclass
    NoSuchAlgorithmException failure;
    do {
        Service s = t.next();
        if (isSpi(s)) {
            return new Delegate(algorithm);
        } else {
            // must be a subclass of Signature, disable dynamic selection
            try {
                Instance instance = GetInstance.getInstance(s, SignatureSpi.class);
                return getInstance(instance, algorithm);
            } catch (NoSuchAlgorithmException e) {
                failure = e;
            }
        }
    } while (t.hasNext());
    throw failure;
}

Example 13 with Instance

use of sun.security.jca.GetInstance.Instance in project jdk8u_jdk by JetBrains.

the class XMLSignatureFactory method getInstance.

/**
     * Returns an <code>XMLSignatureFactory</code> that supports the
     * requested XML processing mechanism and representation type (ex: "DOM"),
     * as supplied by the specified provider. The specified provider must be
     * registered in the security provider list.
     *
     * <p>Note that the list of registered providers may be retrieved via
     * the {@link Security#getProviders() Security.getProviders()} method.
     *
     * @param mechanismType the type of the XML processing mechanism and
     *    representation. See the <a
     *    href="../../../../../technotes/guides/security/xmldsig/overview.html#Service Provider">
     *    Service Providers</a> section of the API overview for a list of
     *    standard mechanism types.
     * @param provider the string name of the provider
     * @return a new <code>XMLSignatureFactory</code>
     * @throws NoSuchProviderException if the specified provider is not
     *    registered in the security provider list
     * @throws NullPointerException if <code>provider</code> or
     *    <code>mechanismType</code> is <code>null</code>
     * @throws NoSuchMechanismException if an <code>XMLSignatureFactory</code>
     *    implementation for the specified mechanism is not
     *    available from the specified provider
     * @see Provider
     */
public static XMLSignatureFactory getInstance(String mechanismType, String provider) throws NoSuchProviderException {
    if (mechanismType == null) {
        throw new NullPointerException("mechanismType cannot be null");
    } else if (provider == null) {
        throw new NullPointerException("provider cannot be null");
    } else if (provider.length() == 0) {
        throw new NoSuchProviderException();
    }
    Instance instance;
    try {
        instance = GetInstance.getInstance("XMLSignatureFactory", null, mechanismType, provider);
    } catch (NoSuchAlgorithmException nsae) {
        throw new NoSuchMechanismException(nsae);
    }
    XMLSignatureFactory factory = (XMLSignatureFactory) instance.impl;
    factory.mechanismType = mechanismType;
    factory.provider = instance.provider;
    return factory;
}