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package javax.crypto;

import jdk.internal.javac.PreviewFeature;

/**
 * A specification of Key Derivation Function ({@link KDF}) parameters.
 * <p>
 * The purpose of this interface is to group (and provide type safety for) all
 * {@code KDF} parameter specifications. All {@code KDF} parameter
 * specifications must implement this interface.
 * <p>
 * When supplied, the
 * {@link KDF#getInstance(String, KDFParameters) KDF.getInstance} methods return
 * a {@code KDF} that is initialized with the specified parameters.
 * <p>
 * The {@code KDFParameters} used for initialization are returned by
 * {@link KDF#getParameters()} and may contain additional default or random
 * parameter values used by the underlying KDF implementation.
 *
 * @see KDF#getInstance(String, KDFParameters)
 * @see KDF#getParameters()
 * @see KDF
 * @since 24
 */
@PreviewFeature(feature = PreviewFeature.Feature.KEY_DERIVATION)
public interface KDFParameters {}
