Question

我已经重新签名了一个jar文件并运行它。但是，它在打开后立即关闭。是否可以从java代码调用* .rsa或* .sf或manifest.mf的信息来检查它是否有变化，谢谢。

Answer 1

实际上我在jar文件的类中找到了一个方法及其返回的证书，这意味着在jar文件中有一个证书控制桥，代码是：

    private Certificate[] XQ(et etProp) throws Exception{
        System.out.println("Rg test 78");
    String value = null;
    Iterator iterator = etProp.af().iterator();

    while (iterator.hasNext()) {

        un.JI innerUn = (un.JI) iterator.next();
        String certificateToUpperCase = innerUn.XQ().toUpperCase();


        if (certificateToUpperCase != null && certificateToUpperCase.startsWith("META-INF/")
                && (certificateToUpperCase.endsWith(".RSA") || certificateToUpperCase.endsWith(".DSA"))) {

            value = innerUn.XQ();
            break;
        }

    }

    if (value == null) {
                System.out.println("Rg test 81");
        qm.XQ((String) "Could not find certificates file");
        return null;
    } else {
                System.out.println("Rg test 82");
        byte[] arrayAf = etProp.af(value);
        if (arrayAf == null) {
                        System.out.println("Rg test 83");
            Object[] objectsArray = new Object[] { value };
            return null;
        } else {
                        System.out.println("Rg test 84");
            ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream(arrayAf);

            Collection collection;
            try {
                                System.out.println("Rg test 85");
                CertificateFactory certificateFactory = CertificateFactory
                        .getInstance("X.509");
                collection = certificateFactory.generateCertificates(byteArrayInputStream);
            } catch (CertificateException ex) {
                qm.XQ((String) String.format(
                        "Could not parse certificate data: %s",
                        new Object[] { ex.toString() }));
                return null;
            }

            Certificate[] certificates = new Certificate[collection.size()];
            int i = 0;

            Certificate certificate;
            for (Iterator iterator1 = collection.iterator(); iterator1.hasNext(); certificates[i++] = certificate) {
                                System.out.println("Rg test 87");
                certificate = (Certificate) iterator1.next();
            }

            return certificates;
        }
    }
}

保护jar文件免受破解是非常好的举措。

* .rsa和* .sf manifest.mf从java类调用

1 个答案: