如何加密形式的密鑰DER

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我有一個DER（可分辨編碼規則）編碼二進制數據形式的非對稱加密的公鑰，它是ASN.1（抽象語法符號一）編碼。如何加密形式的密鑰DER

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

我怎樣才能加密此鍵來生成密碼文本1234

我試圖從互聯網上下面的示例代碼：

public class ATMPINClient{ 


    public static void main(String[] args) throws Exception { 

     String pkey = "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"; 

     String atmPin = "1234"; 
     byte[] key = pkey.getBytes(); 
     encrypt(atmPin, key); 


    } 

    public static byte[] encrypt(String atmPin, byte[] keyCode) 
      throws Exception { 
     X509Certificate cert = X509Certificate.getInstance(keyCode); 
     RSAPublicKey rk = (RSAPublicKey) cert.getPublicKey(); 
     System.out.println("Algorithm: " + rk.getAlgorithm()); 
     System.out.println("Modules : " + rk.getModulus()); 
     System.out.println("Hex - Modules : " + rk.getModulus().toString(16).toUpperCase()); 

     System.out.println("Exponent : " + rk.getPublicExponent()); 
     System.out.println("Name : " + cert.getSubjectDN().getName()); 
     System.out.println("Issuer Name : " + cert.getIssuerDN().getName()); 
     System.out.println("Not After : " + cert.getNotAfter()); 
     System.out.println("Not Before : " + cert.getNotBefore()); 
     System.out.println("Format : " + cert.getPublicKey().getFormat()); 
     Cipher cipher = Cipher.getInstance("RSA"); 

     cipher.init(Cipher.ENCRYPT_MODE, rk); 
     System.out.println("Actual PIN : " + atmPin); 
     byte[] PIN = cipher.doFinal(atmPin.getBytes("UTF-8")); 

     String encPIN = new sun.misc.BASE64Encoder().encode(PIN); 
     System.out.println("Encrypted Pin : " + encPIN); 

     return PIN; 

    } 
}

獲得以下錯誤：

Exception in thread "main" javax.security.cert.CertificateException: InvocationTargetException: javax.security.cert.CertificateException: invalid DER-encoded certificate data 
    at javax.security.cert.X509Certificate.getInst(X509Certificate.java:226) 
    at javax.security.cert.X509Certificate.getInstance(X509Certificate.java:186) 
    at atmpinclient.ATMPINClient.encrypt(ATMPINClient.java:33) 
    at atmpinclient.ATMPINClient.main(ATMPINClient.java:26) 
Java Result: 1

請告知如何實現這種加密。

來源

2017-02-16 Mak

我認爲，你叫** AESUtils事實加密**。一個叫做類中'encrypt' ** RSAEncrypter * *可能與它有關。另外，表示「無效的AES密鑰長度」的行可能會提示您考慮爲什麼您的RSA加密方法正在討論AES錯誤...請仔細閱讀您的錯誤並查看您的代碼，並投入一點研究工作？ –

我已經更新了我的加密方法，現在我得到了不同的例外，請告知 – Mak

傳遞完整的X509Certificate，而不僅僅是base64數據。 –

我能夠通過附加的開始和結束證書公鑰

String beignKey = "-----BEGIN CERTIFICATE-----"+System.getProperty("line.separator");; 
     String pkey = "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"; 

String endKey = System.getProperty("line.separator")+"-----END CERTIFICATE-----" ; 


pkey = beignKey + pkey + endKey;

來源

2017-02-17 10:25:18 Mak

如何加密形式的密鑰DER

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