org.bouncycastle.oer.its.ieee1609dot2.Opaque Maven / Gradle / Ivy

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The Bouncy Castle Java APIs for ASN.1 extension and utility APIs used to support bcpkix and bctls with the BC FIPS provider. The APIs may also be used with other providers although if being used in a FIPS context it is the responsibility of the user to ensure that any other providers used are FIPS certified and used appropriately.

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package org.bouncycastle.oer.its.ieee1609dot2;


import java.io.ByteArrayInputStream;
import java.io.InputStream;
import java.lang.reflect.Method;
import java.security.AccessController;
import java.security.PrivilegedAction;

import org.bouncycastle.asn1.ASN1Encodable;
import org.bouncycastle.asn1.ASN1Object;
import org.bouncycastle.asn1.ASN1OctetString;
import org.bouncycastle.asn1.ASN1Primitive;
import org.bouncycastle.asn1.DEROctetString;
import org.bouncycastle.oer.Element;
import org.bouncycastle.oer.OERInputStream;
import org.bouncycastle.util.Arrays;

public class Opaque
    extends ASN1Object
{
    private final byte[] content;

    public Opaque(byte[] content)
    {
        this.content = Arrays.clone(content);
    }

    private Opaque(ASN1OctetString value)
    {
        this(value.getOctets());
    }

    public static Opaque getInstance(Object src)
    {
        if (src instanceof Opaque)
        {
            return (Opaque)src;
        }
        if (src != null)
        {
            return new Opaque(ASN1OctetString.getInstance(src));
        }

        return null;
    }

    public ASN1Primitive toASN1Primitive()
    {
        return new DEROctetString(content);
    }

    public byte[] getContent()
    {
        return content;
    }

    public InputStream getInputStream()
    {
        return new ByteArrayInputStream(content);
    }

    public static  T getValue(final Class type, final Element definition, final Opaque src)
    {
        return AccessController.doPrivileged(new PrivilegedAction()
        {
            public T run()
            {
                try
                {
                    ASN1Encodable value = OERInputStream.parse(src.content, definition);
                    Method m = type.getMethod("getInstance", Object.class);
                    return type.cast(m.invoke(null, value));
                }
                catch (Exception ex)
                {
                    throw new IllegalStateException("could not invoke getInstance on type " + ex.getMessage(), ex);
                }
            }
        });
    }

}