Question

我正在尝试使用bouncycastle 1.46生成X509证书，代码如下。我遇到的问题是，当证书在JKS中写入然后重新读取时，DN会被反转。例如，如果我运行下面的代码，我会得到以下输出：

CN=test,O=gina
CN=test,O=gina
CN=test,O=gina
O=gina, CN=test

有人知道这个的原因吗？怎么避免呢？提前谢谢。

代码：

public static void main(String[] args) {
    try {
        Security.addProvider(new BouncyCastleProvider());

        KeyPair pair = generateKeyPair("RSA", 1024);
        X500Name principal = new X500Name("cn=test,o=gina");
        System.out.println(principal);
        BigInteger sn = BigInteger.valueOf(1234);
        Date start = today();
        Date end = addYears(start, 2);
        X509Certificate cert = generateCert(principal, pair, sn, start, end,
                "SHA1withRSA");
        cert.verify(pair.getPublic());
        System.out.println(cert.getSubjectDN());

        // Store the certificate in the JKS
        KeyStore ks = KeyStore.getInstance("JKS");
        ks.load(null, null);
        ks.setKeyEntry("alias", pair.getPrivate(), KEY_PWD,
                new X509Certificate[] {cert});
        X509Certificate c
                = (X509Certificate)ks.getCertificateChain("alias")[0];
        System.out.println(c.getSubjectDN());
        OutputStream out = new FileOutputStream("text.jks");
        try {
            ks.store(out, KEYSTORE_PWD);
        } finally {
            out.close();
        }

        // Reread the JKS
        ks = KeyStore.getInstance("JKS");
        InputStream in = new FileInputStream("text.jks");
        try {
            ks.load(in, KEYSTORE_PWD);
        } finally {
            in.close();
        }
        c = (X509Certificate)ks.getCertificateChain("alias")[0];
        c.verify(pair.getPublic());
        System.out.println(c.getSubjectDN());
    } catch (Exception e) {
        e.printStackTrace();
    }
}

private static X509Certificate generateCert(X500Name principal,
        KeyPair pair, BigInteger sn, Date start, Date end, String sigalg)
        throws OperatorCreationException, CertificateException {
    JcaX509v3CertificateBuilder certGen
            = new JcaX509v3CertificateBuilder(principal, sn, start, end,
                    principal, pair.getPublic());
    JcaContentSignerBuilder builder
            = new JcaContentSignerBuilder(sigalg);
    builder.setProvider("BC");
    ContentSigner signr = builder.build(pair.getPrivate());
    X509CertificateHolder certHolder = certGen.build(signr);
    JcaX509CertificateConverter conv
            = new JcaX509CertificateConverter();
    conv.setProvider("BC");
    return conv.getCertificate(certHolder);
}

private static KeyPair generateKeyPair(String algorithm, int keySize)
        throws NoSuchAlgorithmException {
    KeyPairGenerator gen = KeyPairGenerator.getInstance(algorithm);
    gen.initialize(keySize);
    return gen.generateKeyPair();
}

private static Date today() {
    Calendar cal = Calendar.getInstance();
    cal.set(Calendar.HOUR_OF_DAY, 0);
    cal.set(Calendar.MINUTE, 0);
    cal.set(Calendar.SECOND, 0);
    cal.set(Calendar.MILLISECOND, 0);
    return cal.getTime();
}

private static Date addYears(Date date, int count) {
    Calendar cal = Calendar.getInstance();
    cal.setTime(date);
    cal.add(Calendar.YEAR, count);
    return cal.getTime();
}

Answer 1

这可能有点简单。至少在BC 1.48+中，您可以这样构造X500Name，并且OID将以预期的方式（或者至少以您指定的方式）进行排序：

final X500Name subject = new X500Name(RFC4519Style.INSTANCE, "CN=test,O=gina");

Answer 2

我遇到了同样的问题并快速解决了以下问题：

//CREATES AN X500 CA SUBJECT FOR ISSUER

X500Name issuerName = new JcaX509CertificateHolder((X509Certificate) caCert).getSubject();

然后我使用了以下内容：

//CONSTRUCTS THE X509 CERTIFIFATE OBJECT

X509v3CertificateBuilder v3CertGen = new X509v3CertificateBuilder(
issuerName, 
serialNumber, 
startDate, endDate, 
DevCsr.getSubject(), 
DevCsr.getSubjectPublicKeyInfo());

Java Keystore结束实体证书中的颁发者名称现在以正确的顺序显示。

干杯！

Answer 3

我和弹性1.47有同样的问题。

首先，您必须小心X500Name和X500Principal类。有SUN课程和充气课程。他们是完全不同的!!

应使用X500NameBuilder创建X500Name（bouncy）。但是如果需要使用String创建它，那么您的属性必须与RFC2253的顺序相反，这意味着您的属性必须按以下顺序排列：“CN，L，ST，O，OU，C，STREET，DC，UID ”

这不方便，因为，例如，在我的情况下，我必须从X500Principal（SUN）创建X500Name（弹性），唯一的方法是使用X500Principal：getName（）方法打印属性按RFC2253顺序排列。所以我创建了这个方法：

private org.bouncycastle.asn1.x500.X500Name toBouncyX500Name( javax.security.auth.x500.X500Principal principal) {

    String name = principal.getName();

    String[] RDN = name.split(",");

    StringBuffer buf = new StringBuffer(name.length());
    for(int i = RDN.length - 1; i >= 0; i--){
        if(i != RDN.length - 1)
            buf.append(',');

        buf.append(RDN[i]);
    }

    return new X500Name(buf.toString());
}

希望它对某人有用：）

证书主题和颁发者中的属性相反

3 个答案: