java-topology/test/jdk/javax/crypto/KDF/KDFDelayedProviderException.java

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/*
 * @test
 * @bug 8353888
 * @library /test/lib /test/jdk/security/unsignedjce
 * @build java.base/javax.crypto.ProviderVerifier
 * @run main/othervm KDFDelayedProviderException
 * @summary check delayed provider selection exception messages
 */

import jdk.test.lib.Asserts;

import javax.crypto.KDF;
import javax.crypto.KDFParameters;
import javax.crypto.KDFSpi;
import javax.crypto.SecretKey;
import java.security.InvalidAlgorithmParameterException;
import java.security.Provider;
import java.security.Security;
import java.security.spec.AlgorithmParameterSpec;
import java.security.spec.NamedParameterSpec;

public class KDFDelayedProviderException {
    public static void main(String[] args) throws Exception {

        Security.addProvider(new P1()); // only accepts NamedParameterSpec.ED25519
        Security.addProvider(new P2()); // only accepts NamedParameterSpec.ED448

        checkMessage("No provider supports this input",
                () -> KDF.getInstance("K").deriveData(NamedParameterSpec.X25519));

        checkMessage("The specified P1 provider does not support this input",
                () -> KDF.getInstance("K", "P1").deriveData(NamedParameterSpec.ED448));

        // ED448 is supported by one provider
        KDF.getInstance("K").deriveData(NamedParameterSpec.ED448);

        // After P1 has been selected, ED448 is no longer supported
        var k = KDF.getInstance("K");
        k.deriveData(NamedParameterSpec.ED25519);
        checkMessage("The previously selected P1 provider does not support this input",
                () -> k.deriveData(NamedParameterSpec.ED448));

    }

    public static void checkMessage(String msg, Asserts.TestMethod testMethod) {
        var exc = Asserts.assertThrows(InvalidAlgorithmParameterException.class, testMethod);
        Asserts.assertEquals(msg, exc.getMessage());
    }

    public static class P1 extends Provider {
        public P1() {
            super("P1", "1", "");
            put("KDF.K", K1.class.getName());
        }
    }

    public static class P2 extends Provider {
        public P2() {
            super("P2", "1", "");
            put("KDF.K", K2.class.getName());
        }
    }

    public static class K1 extends KDFSpi {
        public K1(KDFParameters p) throws InvalidAlgorithmParameterException {
            super(p);
        }
        protected byte[] engineDeriveData(AlgorithmParameterSpec derivationSpec)
                throws InvalidAlgorithmParameterException {
            if (derivationSpec != NamedParameterSpec.ED25519) {
                throw new InvalidAlgorithmParameterException("Not Ed25519");
            }
            return new byte[0];
        }
        protected KDFParameters engineGetParameters() {
            return null;
        }
        protected SecretKey engineDeriveKey(String alg, AlgorithmParameterSpec derivationSpec) {
            return null;
        }
    }

    public static class K2 extends KDFSpi {
        public K2(KDFParameters p) throws InvalidAlgorithmParameterException {
            super(p);
        }
        protected byte[] engineDeriveData(AlgorithmParameterSpec derivationSpec)
                throws InvalidAlgorithmParameterException {
            if (derivationSpec != NamedParameterSpec.ED448) {
                throw new InvalidAlgorithmParameterException("Not Ed448");
            }
            return new byte[0];
        }
        protected KDFParameters engineGetParameters() {
            return null;
        }
        protected SecretKey engineDeriveKey(String alg, AlgorithmParameterSpec derivationSpec) {
            return null;
        }
    }
}