如何加密形式的密钥DER

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我有一个DER（可分辨编码规则）编码二进制数据形式的非对称加密的公钥，它是ASN.1（抽象语法符号一）编码。如何加密形式的密钥DER

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

我怎样才能加密此键来生成密码文本1234

我试图从互联网上下面的示例代码：

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; 

    } 
}

获得以下错误：

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

请告知如何实现这种加密。

来源

2017-02-16 Mak

我认为，你叫** AESUtils事实加密**。一个叫做类中'encrypt' ** RSAEncrypter * *可能与它有关。另外，表示“无效的AES密钥长度”的行可能会提示您考虑为什么您的RSA加密方法正在讨论AES错误...请仔细阅读您的错误并查看您的代码，并投入一点研究工作？ –

我已经更新了我的加密方法，现在我得到了不同的例外，请告知 – Mak

传递完整的X509Certificate，而不仅仅是base64数据。 –

我能够通过附加的开始和结束证书公钥

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;

来源

2017-02-17 10:25:18 Mak

如何加密形式的密钥DER

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