将字节数组更改为 PKCS12 证书的私钥

如何解决将字节数组更改为 PKCS12 证书的私钥

我从 Azure Key Vault 获取我的证书凭据并使用来自 url 的值："sid": "https://.vault.azure.net/secrets/

package com.test;

import org.apache.commons.codec.binary.Base64;

import java.security.KeyFactory;
import java.security.NoSuchAlgorithmException;
import java.security.PrivateKey;
import java.security.spec.InvalidKeySpecException;
import java.security.spec.PKCS8EncodedKeySpec;
import java.util.Arrays;
  
public class decodeBase64 {
    
    public static PrivateKey main(String key) throws InvalidKeySpecException,NoSuchAlgorithmException {
     
        String string = key;
  
 
  // Get bytes from string

  byte[] byteArray = Base64.decodeBase64(string.getBytes());
  
  
 
  // Print the decoded array
 
  System.out.println(Arrays.toString(byteArray));
  

  // Print the decoded string 
 
  //String decodedString = new String(byteArray);
  KeyFactory kf = KeyFactory.getInstance("RSA"); // or "EC" or whatever
  PrivateKey privateKey = kf.generatePrivate(new PKCS8EncodedKeySpec(byteArray));

 
  //System.out.println(decodedString);
  return privateKey;
    }

    private static PrivateKey generatePrivate(PKCS8EncodedKeySpec pkcs8EncodedKeySpec) {
        // TODO Auto-generated method stub
        return null;
    }
}

但是我遇到了这个错误

"Invocation of static Method 'main(java.lang.String)' from Class 'com.test.decodeBase64' with arguments [java.lang.String key] resulted in an error.
Expected arguments are [java.lang.String key].
Cause: java.security.spec.InvalidKeySpecException - java.security.InvalidKeyException: IOException : version mismatch: (supported:     00,parsed:     03"

xml:

`<sub-flow name="encode" doc:id="b260143f-be3c-4f65-be18-49eff95b834d" >
        <java:invoke-static doc:name="Invoke static" doc:id="996b6d31-9b1d-4f34-ae64-790f37fd1996" class="com.test.decodeBase64" method="main(java.lang.String)" target="content">
            <java:args ><![CDATA[#[{key: <*my certificates sid value in String*>}]]]></java:args>
        </java:invoke-static>
        <logger level="INFO" doc:name="Logger" doc:id="041a9e19-8e4b-4b7c-a0b6-e2f3672b89d4" message="#[payload]"/>
    </sub-flow>`

有人可以帮我吗？