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This is a collection of JAVA libraries that implement Unbound cryptographic classes for JAVA provider, PKCS11 wrapper, cryptoki, and advapi

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package com.unbound.common.crypto;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.security.KeyStore;
import java.security.KeyStoreException;
import java.security.NoSuchAlgorithmException;
import java.security.ProviderException;
import java.security.cert.CertificateException;

public class PKCS12
{
  public static KeyStore importDer(byte[] der, String passsword) throws KeyStoreException, CertificateException, NoSuchAlgorithmException, IOException
  {
    char[] passChars = passsword == null ? null : passsword.toCharArray();
    KeyStore ks = KeyStore.getInstance("pkcs12");
    ks.load(new ByteArrayInputStream(der), passChars);
    return ks;
  }

  public static KeyStore create()
  {
    try { return KeyStore.getInstance("pkcs12"); }
    catch (KeyStoreException e) { throw new ProviderException(e); }
  }

  public static byte[] exportDer(KeyStore ks, String passsword)
  {
    char[] passChars = passsword == null ? null : passsword.toCharArray();
    ByteArrayOutputStream bs = new ByteArrayOutputStream();
    try { ks.store(bs, passChars); }
    catch (Exception e) { throw new ProviderException(e); }
    return bs.toByteArray();
  }

}