将Bouncy Castle的非对称密码密钥对（RSA）转换为java.security.KeyPair

我正在尝试为我们的E2E测试自动生成CA和证书。我从Bouncy Castle开始，我已经成功地生成了CA证书和机器证书。但是，现在我需要将由BC'org.bounchycastle.crypto.asymmetricipherkeypair表示的RSA密钥对转换为java.security.keypair。我似乎找不到这样做的方法。

可能有不止一种方法，但这里有一个例子：

import org.bouncycastle.crypto.AsymmetricCipherKeyPair;
import org.bouncycastle.crypto.util.PrivateKeyInfoFactory;
import org.bouncycastle.crypto.util.SubjectPublicKeyInfoFactory;

import java.security.KeyFactory;
import java.security.KeyPair;
import java.security.spec.PKCS8EncodedKeySpec;
import java.security.spec.X509EncodedKeySpec;


private static KeyPair convertBcToJceKeyPair(AsymmetricCipherKeyPair bcKeyPair) throws Exception {
    byte[] pkcs8Encoded = PrivateKeyInfoFactory.createPrivateKeyInfo(bcKeyPair.getPrivate()).getEncoded();
    PKCS8EncodedKeySpec pkcs8KeySpec = new PKCS8EncodedKeySpec(pkcs8Encoded);
    byte[] spkiEncoded = SubjectPublicKeyInfoFactory.createSubjectPublicKeyInfo(bcKeyPair.getPublic()).getEncoded();
    X509EncodedKeySpec spkiKeySpec = new X509EncodedKeySpec(spkiEncoded);
    KeyFactory keyFac = KeyFactory.getInstance("RSA");
    return new KeyPair(keyFac.generatePublic(spkiKeySpec), keyFac.generatePrivate(pkcs8KeySpec));
}