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The Bouncy Castle Crypto package is a Java implementation of cryptographic algorithms. This jar contains JCE provider and lightweight API for the Bouncy Castle Cryptography APIs for JDK 1.8 and up.

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package org.bouncycastle.pqc.jcajce.spec;

import java.security.spec.AlgorithmParameterSpec;

/**
 * ParameterSpec for keys using the LMS Hierarchical Signature System (HSS).
 */
public class LMSHSSKeyGenParameterSpec
    implements AlgorithmParameterSpec
{
    private final LMSKeyGenParameterSpec[] specs;

    /**
     * Base constructor, specify the LMS parameters at each level of the hierarchy.
     *
     * @param specs the LMS parameter specs for each level of the hierarchy.
     */
    public LMSHSSKeyGenParameterSpec(LMSKeyGenParameterSpec... specs)
    {
        if (specs.length == 0)
        {
            throw new IllegalArgumentException("at least one LMSKeyGenParameterSpec required");
        }

        this.specs = specs.clone();
    }

    /**
     * Return the LMS parameters for the HSS hierarchy.
     *
     * @return the HSS component LMS parameter specs.
     */
    public LMSKeyGenParameterSpec[] getLMSSpecs()
    {
        return specs.clone();
    }
}