Java：通过代码生成时，密钥库格式无效

这已经被问了几次，但没有人提供编码测试用例。 这里我举一个问题的例子：

程序化生成Keystore（作品）

在该商店内创建证书（作品）

将密钥库保存到磁盘（工作）

用keytool列出keystore（作品）

以编程方式加载密钥库（失败，IOException：InvalidKeystoreFormat）

我没有得到的是，在保存和加载时，我使用KeyStore.getInstance（“JKS”），但它的失败。 欢迎任何建议！

运行时输出：

Creating private keystore at 'private.keystore'.
Created keystore, now created signer cert
Created signer cert, saving cert
Reloading keystore:
Failed to load the keystore after creation: Invalid keystore format

测试用例来源：

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.security.InvalidKeyException;
import java.security.KeyStore;
import java.security.KeyStoreException;
import java.security.NoSuchAlgorithmException;
import java.security.NoSuchProviderException;
import java.security.PrivateKey;
import java.security.SignatureException;
import java.security.cert.Certificate;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;

import sun.security.x509.X500Name;

public class KeystoreCreator
{
 private String fPrivateKeyStore;
 private String fPrivateKeyStorePassword;
 private String fPrivateKeyStoreKeyPassword;
 private String fPublicKeyCipherPassword;
 private String fPrivateKeyAlias;

 /**
  * @param args
  * @throws Exception 
  */
 public static void main(String[] args) throws Exception
 {
  KeystoreCreator creator = new KeystoreCreator();

  creator.setPrivateKeyStore("private.keystore");
  creator.setPrivateKeyStorePassword("beer123");

  creator.setPrivateKeyAlias("myalias");
  creator.setPrivateKeyStoreKeyPassword("beer123");
  creator.setPublicKeyCipherPassword("beer123");

  creator.initKeyStores();
 }

 public KeystoreCreator()
 {  
 }

 public void setPrivateKeyStore(String name)
 {
  fPrivateKeyStore=name;
 }
 public void setPrivateKeyStorePassword(String pass)
 {
  fPrivateKeyStorePassword=pass;
 }
 public void setPrivateKeyStoreKeyPassword(String pass)
 {
  fPrivateKeyStoreKeyPassword=pass;
 }
 public void setPublicKeyCipherPassword(String pass)
 {
  fPublicKeyCipherPassword=pass;
 }
 public void setPrivateKeyAlias(String alias)
 {
  fPrivateKeyAlias=alias;
 }

    public void initKeyStores() throws Exception
    {
        OutputStream out = null;
        File f=new File(fPrivateKeyStore);
        if (f.exists())
        {
         f.delete();
         if (f.exists())
         {
          throw new IOException("Want to remove the keystore but can't, still reported as present after removal");
         }
        }
        try
        {
         System.out.println("Creating private keystore at '" + fPrivateKeyStore + "'.");
         out = new FileOutputStream(fPrivateKeyStore);
         KeyStore privateKeyStore = KeyStore.getInstance("JKS");
         privateKeyStore.load(null, fPrivateKeyStorePassword.toCharArray());

         System.out.println("Created keystore, now created signer cert");
         X500Name x500name=getCA();
         Certificate cert = createCertificate(fPrivateKeyAlias, fPrivateKeyStoreKeyPassword, x500name, privateKeyStore);

         System.out.println("Created signer cert, saving cert");
         privateKeyStore.store(out, fPublicKeyCipherPassword.toCharArray());
         out.flush();
         out.close();
         //try to load it.
         KeyStore reloadedKeyStore = KeyStore.getInstance("JKS");
         try
         {
          InputStream reloadedIs=getClass().getClassLoader().getResourceAsStream(fPrivateKeyStore);
          if (reloadedIs!=null)
          {
           System.out.println("Reloading keystore:");
           reloadedKeyStore.load(reloadedIs, fPrivateKeyStorePassword.toCharArray());
          }
         }
         catch (Exception e)
         {
          System.err.println("Failed to load the keystore after creation: "+e.getLocalizedMessage());
         }
        }
        catch (Exception e)
        {
         System.err.println("Failed to save the keystore: "+e.getLocalizedMessage());
        }
    }

    private X500Name getCA() throws IOException
    {
     return new sun.security.x509.X500Name("a","b", "c","d","e", "GB");
    }

    public Certificate createCertificate( String alias, String keyPassword,
            sun.security.x509.X500Name x500Name, KeyStore keyStore ) throws NoSuchAlgorithmException,
            InvalidKeyException, CertificateException, SignatureException, NoSuchProviderException,
            KeyStoreException {     
        sun.security.x509.CertAndKeyGen keypair = new sun.security.x509.CertAndKeyGen( "RSA", "MD5WithRSA" );
        keypair.generate( 1024 );
        PrivateKey privKey = keypair.getPrivateKey();
        X509Certificate[] chain = new X509Certificate[1];
        chain[0] = keypair.getSelfCertificate( x500Name, 7000 * 24 * 60 * 60 );
        keyStore.setKeyEntry( alias, privKey, keyPassword.toCharArray(), chain );

        Certificate cert = keyStore.getCertificate( alias );
        return cert;
    }
}

---

1）通过写入文件 ，在当前工作目录中创建私钥存储： new FileOutputStream(fPrivateKeyStore);

2）稍后，您使用getClass().getClassLoader().getResourceAsStream(fPrivateKeyStore); 从类路径中读取 getClass().getClassLoader().getResourceAsStream(fPrivateKeyStore);

我认为你正在阅读错误的文件。 而且之前的测试中已经有另一个名为private.keystore的名称。 要验证，您可能需要打印出两个文件的绝对文件路径，例如new File(fPrivateKeyStore).getAbsolutePath() ，并将其与getClass().getClassLoader().getResource(fPrivateKeyStore).toFileURL();

---

我可能会丢失一些东西，但为什么不使用FileInputStream重新加载私钥存储？

InputStream reloadedIs = new FileInputStream(fPrivateKeyStore);

（我不确定这是否解决了问题，我只是在扫描您的代码时注意到了这一点）

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