http://www.bouncycastle.org/java.html: 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 1.5 to JDK 1.8.
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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

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

    
Base constructor.

Params:
  • id – the ID string associated with this usage of SM2.
/**
     * 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.

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