Examples with Service java.security.Provider.Service used on opensource projects

Example 11 with Service

use of java.security.Provider.Service in project jdk8u_jdk by JetBrains.

the class TransformService method getInstance.

/**
     * Returns a <code>TransformService</code> that supports the specified
     * algorithm URI (ex: {@link Transform#XPATH2}) and mechanism type
     * (ex: DOM) as supplied by the specified provider. Note that the specified
     * <code>Provider</code> object does not have to be registered in the
     * provider list.
     *
     * @param algorithm the URI of the algorithm
     * @param mechanismType the type of the XML processing mechanism and
     *   representation
     * @param provider the <code>Provider</code> object
     * @return a new <code>TransformService</code>
     * @throws NullPointerException if <code>provider</code>,
     *   <code>algorithm</code>, or <code>mechanismType</code> is
     *   <code>null</code>
     * @throws NoSuchAlgorithmException if a <code>TransformService</code>
     *   implementation for the specified algorithm and mechanism type is not
     *   available from the specified <code>Provider</code> object
     * @see Provider
     */
public static TransformService getInstance(String algorithm, String mechanismType, Provider provider) throws NoSuchAlgorithmException {
    if (mechanismType == null || algorithm == null || provider == null) {
        throw new NullPointerException();
    }
    boolean dom = false;
    if (mechanismType.equals("DOM")) {
        dom = true;
    }
    Service s = GetInstance.getService("TransformService", algorithm, provider);
    String value = s.getAttribute("MechanismType");
    if ((value == null && dom) || (value != null && value.equals(mechanismType))) {
        Instance instance = GetInstance.getInstance(s, null);
        TransformService ts = (TransformService) instance.impl;
        ts.algorithm = algorithm;
        ts.mechanism = mechanismType;
        ts.provider = instance.provider;
        return ts;
    }
    throw new NoSuchAlgorithmException(algorithm + " algorithm and " + mechanismType + " mechanism not available");
}

Example 12 with Service

use of java.security.Provider.Service in project jdk8u_jdk by JetBrains.

the class KeyFactory method nextSpi.

/**
     * Update the active KeyFactorySpi of this class and return the next
     * implementation for failover. If no more implemenations are
     * available, this method returns null. However, the active spi of
     * this class is never set to null.
     */
private KeyFactorySpi nextSpi(KeyFactorySpi oldSpi) {
    synchronized (lock) {
        // try that spi now
        if ((oldSpi != null) && (oldSpi != spi)) {
            return spi;
        }
        if (serviceIterator == null) {
            return null;
        }
        while (serviceIterator.hasNext()) {
            Service s = serviceIterator.next();
            try {
                Object obj = s.newInstance(null);
                if (obj instanceof KeyFactorySpi == false) {
                    continue;
                }
                KeyFactorySpi spi = (KeyFactorySpi) obj;
                provider = s.getProvider();
                this.spi = spi;
                return spi;
            } catch (NoSuchAlgorithmException e) {
            // ignore
            }
        }
        serviceIterator = null;
        return null;
    }
}

Example 13 with Service

use of java.security.Provider.Service in project jdk8u_jdk by JetBrains.

the class KeyPairGenerator method getInstance.

/**
     * Returns a KeyPairGenerator object that generates public/private
     * key pairs for the specified algorithm.
     *
     * <p> This method traverses the list of registered security Providers,
     * starting with the most preferred Provider.
     * A new KeyPairGenerator object encapsulating the
     * KeyPairGeneratorSpi 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 string name of the algorithm.
     * See the KeyPairGenerator section in the <a href=
     * "{@docRoot}/../technotes/guides/security/StandardNames.html#KeyPairGenerator">
     * Java Cryptography Architecture Standard Algorithm Name Documentation</a>
     * for information about standard algorithm names.
     *
     * @return the new KeyPairGenerator object.
     *
     * @exception NoSuchAlgorithmException if no Provider supports a
     *          KeyPairGeneratorSpi implementation for the
     *          specified algorithm.
     *
     * @see Provider
     */
public static KeyPairGenerator getInstance(String algorithm) throws NoSuchAlgorithmException {
    List<Service> list = GetInstance.getServices("KeyPairGenerator", algorithm);
    Iterator<Service> t = list.iterator();
    if (t.hasNext() == false) {
        throw new NoSuchAlgorithmException(algorithm + " KeyPairGenerator not available");
    }
    // find a working Spi or KeyPairGenerator subclass
    NoSuchAlgorithmException failure = null;
    do {
        Service s = t.next();
        try {
            Instance instance = GetInstance.getInstance(s, KeyPairGeneratorSpi.class);
            if (instance.impl instanceof KeyPairGenerator) {
                return getInstance(instance, algorithm);
            } else {
                return new Delegate(instance, t, algorithm);
            }
        } catch (NoSuchAlgorithmException e) {
            if (failure == null) {
                failure = e;
            }
        }
    } while (t.hasNext());
    throw failure;
}

Example 14 with Service

use of java.security.Provider.Service in project jdk8u_jdk by JetBrains.

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}/../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(s, t, 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 15 with Service

use of java.security.Provider.Service in project jdk8u_jdk by JetBrains.

the class X509TrustManagerComSunWrapper method getImpl.

/**
     * Returns an array of objects: the first object in the array is
     * an instance of an implementation of the requested algorithm
     * and type, and the second object in the array identifies the provider
     * of that implementation.
     * The <code>provName</code> argument can be null, in which case all
     * configured providers will be searched in order of preference.
     */
static Object[] getImpl(String algName, String engineType, String provName) throws NoSuchAlgorithmException, NoSuchProviderException {
    Service service;
    if (provName != null) {
        ProviderList list = Providers.getProviderList();
        Provider prov = list.getProvider(provName);
        if (prov == null) {
            throw new NoSuchProviderException("No such provider: " + provName);
        }
        service = prov.getService(engineType, algName);
    } else {
        service = getService(engineType, algName);
    }
    if (service == null) {
        throw new NoSuchAlgorithmException("Algorithm " + algName + " not available");
    }
    return getImpl1(algName, engineType, service);
}