将.p12文件返回给客户端而不创建密钥库文件

时间:2015-10-12 22:47:52

标签: java ssl keystore pfx pkcs#12

有没有办法将文件返回到客户端,扩展名为.p12(base64编码的字符串,稍后在客户端解码并以.p12扩展名保存),而不将其存储到PKCS12密钥库?我有创建根证书,客户端证书和设置keyentry到PKCS12密钥库的代码,但我不想在文件系统上有.p12文件,只是为了生成它并将其返回给客户端。谢谢!

创建根证书的简化代码:

public static void createRootCertificate(PublicKey pubKey, PrivateKey privKey) {    
    certGen.setSerialNumber(...);
    certGen.setIssuerDN(...);
    certGen.setNotBefore(...);
    certGen.setNotAfter(...);
    certGen.setSubjectDN(...);
    certGen.setPublicKey(pubKey);
    certGen.setSignatureAlgorithm("SHA1WithRSA");

    // add extensions, key identifier, etc.

    X509Certificate cert = certGen.generateX509Certificate(privKey);
    cert.checkValidity(new Date());
    cert.verify(pubKey);
}

创建后,根证书及其私钥将保存到受信任的存储区。

在生成客户端证书的服务中,我从可信商店读取根证书并生成客户端证书:

public static Certificate createClientCertificate(PublicKey pubKey) {   

    PrivateKey rootPrivateKey = ... //read key from trusted store
    X509Certificate rootCertificate = ... //read certificate from trusted store

    certGen.setSerialNumber(...);
    certGen.setIssuerDN(...); // rootCertificate.getIssuerDN ...
    certGen.setNotBefore(...);
    certGen.setNotAfter(...);
    certGen.setSubjectDN(...);
    certGen.setPublicKey(pubKey);
    certGen.setSignatureAlgorithm("SHA1WithRSA");

    // add extensions, issuer key, etc.

    X509Certificate cert = certGen.generateX509Certificate(rootPrivateKey);
    cert.checkValidity(new Date());
    cert.verify(rootCertificate.getPublicKey(););

    return cert;
}

主要课程如下:

public static void main(String[] args) {        
    // assume I have all needed keys generated
    createRootCertificate(rootPubKey, rootPrivKey);
    X509Certificate clientCertificate = createClientCertificate(client1PubKey);

    KeyStore store = KeyStore.getInstance("PKCS12", "BC");

    store.load(null, null);

    store.setKeyEntry("Client1_Key", client1PrivKey, passwd, new Certificate[]{clientCertificate});    
    FileOutputStream fOut = new FileOutputStream("client1.p12");   
    store.store(fOut, passwd);
}

在上面的代码之后,我正在阅读client1.p12,并且我正在创建该文件的Base64编码响应。当我在客户端解码响应并使用.p12扩展名保存时,一切正常,我可以将其导入浏览器。可以在不将其存储到文件的情况下完成吗?

我尝试过:

store.setKeyEntry("Client1_Key", client1PrivKey, passwd, new Certificate[]{clientCertificate}); 

之后:

Key key = store.getKey("Client1_Key", passwd);

但是当编码键变量时,发送到客户端然后解码它并使用.p12扩展名保存,浏览器说无效或损坏的文件。

提前致谢!

1 个答案:

答案 0 :(得分:1)

只需使用ByteArrayOutputStream而不是FileOutputStream来存储p12:

ByteArrayOutputStream baos = new ByteArrayOutputStream();
store.store(baos, passwd);
byte[] p12Bytes = baos.toByteArray();
String p12Base64 = new String(Base64.encode(p12Bytes));