<fim-prefix>Util;
import org.bouncycastle.pqc.jcajce.interfaces.XMSSMTKey;
import org.bouncycastle.util.Arrays;

public class BCXMSSMTPrivateKey
    implements PrivateKey, XMSSMTKey
{
    private final ASN1ObjectIdentifier treeDigest;
    private final XMSSMTPrivateKeyParameters keyParams;

    public BCXMSSMTPrivateKey(
        ASN1ObjectIdentifier treeDigest,
        XMSSMTPrivateKeyParameters keyParams)
    {
        this.treeDigest = treeDigest;
        this.keyParams = keyParams;
    }

    public BCXMSSMTPrivateKey(PrivateKeyInfo keyInfo)
        throws IOException
    {
        XMSSMTKeyParams keyParams = XMSSMTKeyParams.getInstance(keyInfo.getPrivateKeyAlgorithm().getParameters());
        this.treeDigest = keyParams.getTreeDigest().getAlgorithm();

        XMSSPrivateKey xmssMtPrivateKey = XMSSPrivateKey.getInstance(keyInfo.parsePrivateKey());

        try
        {
            XMSSMTPrivateKeyParameters.Builder keyBuilder = new XMSSMTPrivateKeyParameters
                .Builder(new XMSSMTParameters(keyParams.getHeight(), keyParams.getLayers(), DigestUtil.getDigest(treeDigest)))
                .withIndex(xmssMtPrivateKey.getIndex())
                .withSecretKeySeed(xmssMtPrivateKey.getSecretKeySeed())
                .withSecretKeyPRF(xmssMtPrivateKey.getSecretKeyPRF())
                .withPublicSeed(xmssMtPrivateKey.getPublicSeed())
                .withRoot(xmssMtPrivateKey.getRoot());

            if (xmssMtPrivateKey.getBdsState() != null)
            {
                // BUG: CWE-470 Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection')
                // keyBuilder.withBDSState((BDSStateMap)XMSSUtil.deserialize(xmssMtPrivateKey.getBdsState()));
                // FIXED:
 <fim-middle>               keyBuilder.withBDSState((BDSStateMap)XMSSUtil.deserialize(xmssMtPrivateKey.getBdsState(), BDSStateMap.class));
            }

            this.keyParams = keyBuilder.build();
        }
 <fix-suffix>       catch (ClassNotFoundException e)
        {
            throw new IOException("ClassNotFoundException processing BDS state: " + e.getMessage());
        }
    }

    public String getAlgorithm()
    {
        return "XMSSMT";
    }

    public String getFormat()
    {
        return "PKCS#8";
    }

    public byte[] getEncoded()
    {
        PrivateKeyInfo pki;
        try
        {
            AlgorithmIdentifier algorithmIdentifier = new AlgorithmIdentifier(PQCObjectIdentifiers.xmss_mt, new XMSSMTKeyParams(keyParams.getParameters().getHeight(), keyParams.getParameters().getLayers(), new AlgorithmIdentifier(treeDigest)));
            pki = new PrivateKeyInfo(algorithmIdentifier, createKeyStructure());

            return pki.getEncoded();
        }
        catch (IOException e)
        {
            return null;
        }
    }

    CipherParameters getKeyParams()
    {
        return keyParams;
    }

    public boolean equals(Object o)
    {
        if (o == this)
        {
<|endoftext|>