使用java代码将pfx证书保存到文件(ejbca)

时间:2014-09-29 07:07:13

标签: java certificate keystore pkcs#12 ejbca

我使用EJBCA从CommonName生成证书。在java代码中,我生成了私钥和公钥,然后使用csr生成证书。 现在我以PEM格式(.cer)保存证书,但我还需要私钥,所以我希望使用.pfx或p12扩展名保存。我能怎么做? 这是我生成证书的实际代码:

KeyPair keys;
    try {
        keys = KeyTools.genKeys("1024", AlgorithmConstants.KEYALGORITHM_RSA);   

        //SAVE PRIVKEY
        //PrivateKey privKey = keys.getPrivate();
        //byte[] privateKeyBytes = privKey.getEncoded();
        PKCS10CertificationRequest  pkcs10 = new PKCS10CertificationRequest("SHA256WithRSA",
                CertTools.stringToBcX509Name("CN=NOUSED"), keys.getPublic(), null, keys.getPrivate());
        //Print Privatekey
        //System.out.println(keys.getPrivate().toString());
        CertificateResponse certenv =  ws.certificateRequest(user1,
                                                               new String(Base64.encode(pkcs10.getEncoded())),
                                                                CertificateHelper.CERT_REQ_TYPE_PKCS10,
                                                                null,
                                                                CertificateHelper.RESPONSETYPE_CERTIFICATE);

        //Certificate certenv =  ejbcaraws.pkcs10Req("WSTESTUSER1","foo123",new 
        //String(Base64.encode(pkcs10.getEncoded())),null);

        return certenv.getCertificate (); 
    }catch (Exception e) {}

并且我保存证书:

File file = new File(path+"/"+ x509Cert.getSubjectDN().toString().replace("CN=", "") +".cer");

        FileOutputStream os = new FileOutputStream(file);  
        //os.write("-----BEGIN CERTIFICATE-----\n".getBytes("US-ASCII"));  
        //os.write(Base64.encode(x509Cert.getEncoded(), true));  
        //os.write("-----END CERTIFICATE-----".getBytes("US-ASCII"));  
        //os.close(); 

        PEMWriter pemWriter = new PEMWriter(new PrintWriter(os));
        pemWriter.writeObject(x509Cert);
        pemWriter.flush();
        pemWriter.close();

1 个答案:

答案 0 :(得分:1)

我从不使用EJBCA,但是如果您拥有证书和私钥,并且想要创建PKCS12,则可以使用setKeyEntry(String alias,byte[] key,Certificate[] chain)中的java.security.KeyStore方法添加条目,然后store(OutputStream stream, char[] password)方法将PKCS12保存在文件中(有关详细信息,请查看API)。您的代码可能类似于:

import java.io.FileOutputStream;
import java.security.KeyStore;
import java.security.PrivateKey;
import java.security.cert.Certificate;

public class SamplePKCS12 {

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

        String alias = // the alias for your key...
        PrivateKey key = // your private key
        Certificate[] chain = // an array with your EE certificate to your CA issuer
        // create keystore      
        KeyStore keystore = KeyStore.getInstance("PKCS12");
        // add your key and cert        
        keystore.setKeyEntry(alias, key.getEncoded(), chain);
        // save the keystore to file
        keystore.store(new FileOutputStream("/tmp/keystore.p12"), "yourPin".toCharArray());
    }
}

注意我假设你的证书和私钥正如你在问题中所说的那样。要使用PKCS12,您需要SunJSSE提供商(默认情况下通常会加载),或者您可以使用BouncyCastle提供商。

希望这有帮助,