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The FIPS 140-2 Bouncy Castle Crypto package is a Java implementation of cryptographic algorithms certified to FIPS 140-2 level 1. This jar contains the debug version JCE provider and low-level API for the BC-FJA version 1.0.2.3, FIPS Certificate #3514. Please note the debug jar is not certified.

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package org.bouncycastle.crypto.util;

import java.io.IOException;

import org.bouncycastle.asn1.ASN1OctetString;
import org.bouncycastle.asn1.ASN1Primitive;
import org.bouncycastle.asn1.DEROctetString;
import org.bouncycastle.util.Arrays;

class DerUtil
{
    static ASN1OctetString getOctetString(byte[] data)
    {
        if (data == null)
        {
            return new DEROctetString(new byte[0]);
        }

        return new DEROctetString(Arrays.clone(data));
    }

    static byte[] toByteArray(ASN1Primitive primitive)
    {
        try
        {
            return primitive.getEncoded();
        }
        catch (IOException e)
        {
            throw new IllegalStateException("Cannot get encoding: " + e.getMessage(), e);
        }
    }
}