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The Bouncy Castle Java APIs for CMS, PKCS, EAC, TSP, CMP, CRMF, OCSP, and certificate generation. This jar contains APIs for JDK 1.5 and up. The APIs can be used in conjunction with a JCE/JCA provider such as the one provided with the Bouncy Castle Cryptography APIs.

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package org.bouncycastle.jcajce.spec;

import java.security.spec.AlgorithmParameterSpec;

import org.bouncycastle.util.Arrays;

/**
 * Parameter spec for SM2 ID parameter
 */
public class SM2ParameterSpec
    implements AlgorithmParameterSpec
{
    private byte[] id;

    /**
     * Base constructor.
     *
     * @param id the ID string associated with this usage of SM2.
     */
    public SM2ParameterSpec(
        byte[] id)
    {
        if (id == null)
        {
            throw new NullPointerException("id string cannot be null");
        }

        this.id = Arrays.clone(id);
    }

    /**
     * Return the ID value.
     *
     * @return the ID string.
     */
    public byte[] getID()
    {
        return Arrays.clone(id);
    }
}