McEliece（Bouncy Castle）获取公钥返回

Question

我目前正在尝试使用BC实现McEliece加密，但遇到了一些麻烦。我目前有能力创建密钥并将它们放置到文件中，我可以将它们读回到程序中，但无法从字节回到公钥。

下面是我目前有：

 public static String EncryptText(Component tmp, String Plaintext) throws InvalidKeyException, InvalidCipherTextException { 
    String CipherText = "Didnt Work"; 
    try { 
     // The message to encrypt. 
     byte[] messageBytes = Plaintext.getBytes(); 

     //read in the Public Key to use to Encrypt. 
     File f = new File(tmp.getPublicKey()); 
     FileInputStream fis = new FileInputStream(f); 
     byte[] PubKeybytes = new byte[fis.available()]; 
     fis.read(PubKeybytes); 
     fis.close(); 


     //turn the bytes into the Key. 
     X509EncodedKeySpec pubKeySpec = new X509EncodedKeySpec(PubKeybytes); 
     SubjectPublicKeyInfo PKI ; 
     KeyFactory KF = null; 
     try { 
      KF = KeyFactory.getInstance("McEliece"); 
     } catch (NoSuchAlgorithmException ex) { 
      Logger.getLogger(McEliecePKCS.class.getName()).log(Level.SEVERE, null, ex); 
     } 
     PublicKey PK = null; 
     try { 
      PK = KF.generatePublic(pubKeySpec); 
     } catch (InvalidKeySpecException ex) { 
      Logger.getLogger(McEliecePKCS.class.getName()).log(Level.SEVERE, null, ex); 
     } 

     //Public Key 
     PublicKey aPublic = PK; 
     McEliecePublicKeyParameters GPKP = (McEliecePublicKeyParameters) McElieceKeysToParams.generatePublicKeyParameter(aPublic); 

     //set the public key to use. 
     McElieceCipher EnCipheredText = new McElieceCipher(); 
     EnCipheredText.init(true, GPKP); 
     EnCipheredText.initCipherEncrypt(GPKP); 

     byte[] ciphertextBytes; 

     //sign the message with the public key. 
     ciphertextBytes = EnCipheredText.messageEncrypt(messageBytes); 
     CipherText = new String(ciphertextBytes); 
     return CipherText; 
    } catch (IOException ex) { 
     Logger.getLogger(McEliecePKCS.class.getName()).log(Level.SEVERE, null, ex); 
    } 
    return CipherText; 
}\ 

与此代码具有当前误差IM与的KeyFactory和“McEliece公钥体制”不认为是算法即时得到抛出：NoSuchAlgorithmException，但我不是很确定什么别的现在就试试。我也尝试过使用BouncyCastle包含的McEliece中的KeyFactory，但没有成功，因为这些方法是受保护的，或者不允许使用KeySpec，并且想要SubjectPublicKeyInfo，我无法弄清楚如何将KeySpec改成Byte数组成。

对不起，如果这是一个简单的问题，相当新的编码密码学。

感谢您提前回复。

Answer 1

管理找出问题。我需要补充：

  Security.addProvider(new BouncyCastleProvider()); 
      Security.addProvider(new BouncyCastlePQCProvider());