Russian Anonymous Proxy

Bouncy Castle is a popular cryptography library in C#. If you want to parse and extract Certificate Signing Request (CSR) extensions using Bouncy Castle, you can follow these steps

Add Bouncy Castle Library

First, make sure you have the Bouncy Castle library added to your project. You can do this via NuGet Package Manager:

Install-Package BouncyCastle

Parse CSR:

Use Bouncy Castle to parse the CSR. The following code demonstrates how to parse a CSR from a PEM-encoded string:

using Org.BouncyCastle.Pkcs;
using Org.BouncyCastle.OpenSsl;
using Org.BouncyCastle.X509;
using System;
using System.IO;

class Program
{
    static void Main()
    {
        string csrString = File.ReadAllText("path/to/your/csr.pem");

        Pkcs10CertificationRequest csr = ParseCSR(csrString);

        // Now you can work with the parsed CSR
    }

    static Pkcs10CertificationRequest ParseCSR(string csrString)
    {
        PemReader pemReader = new PemReader(new StringReader(csrString));
        object pemObject = pemReader.ReadObject();

        if (pemObject is Pkcs10CertificationRequest csr)
        {
            return csr;
        }

        throw new InvalidOperationException("Invalid CSR format");
    }
}

Extract Extensions:

Once you have the CSR parsed, you can extract extensions using the GetAttributes method. Extensions in a CSR are typically stored in the Attributes property. Here's an example:

foreach (DerObjectIdentifier oid in csr.CertificationRequestInfo.Attributes.GetOids())
{
    Attribute attribute = csr.CertificationRequestInfo.Attributes[oid];

    // Work with the attribute, e.g., check if it's an extension
    if (oid.Equals(PkcsObjectIdentifiers.Pkcs9AtExtensionRequest))
    {
        X509Extensions extensions = X509Extensions.GetInstance(attribute.AttrValues[0]);

        // Now you can iterate over extensions and extract the information you need
        foreach (DerObjectIdentifier extOID in extensions.ExtensionOids)
        {
            X509Extension extension = extensions.GetExtension(extOID);
            // Process the extension
        }
    }
}

Modify the code according to your specific requirements and the structure of your CSR. The example assumes a basic structure, and you may need to adapt it based on your CSR format and the extensions you're interested in.

Proxy autoconfiguration is a feature that allows a client to automatically discover and configure the settings required to connect to a proxy server. This is typically done using a configuration file or script that provides instructions on how to set up the client's proxy settings.

The most common format for proxy autoconfiguration is the Proxy Auto-Config (PAC) file. A PAC file is a JavaScript file that contains functions to determine the appropriate proxy server(s) to use for a given URL or network condition. When a client is configured to use a PAC file, it will automatically execute the PAC script to determine the best proxy server for each request.

Another format for proxy autoconfiguration is the Web Proxy Autodiscovery Protocol (WPAD). WPAD uses a Dynamic Host Configuration Protocol (DHCP) option or a Domain Name System (DNS) query to locate a configuration script (usually named "wpad.dat") that contains the proxy settings. The client then executes the script to determine the appropriate proxy server(s) to use.

Proxy autoconfiguration makes it easier for clients to connect to the correct proxy server without manual configuration, especially in large organizations or networks where proxy settings may change frequently. It also allows for centralized management of proxy settings, making it simpler to update or change configurations across the entire network.

A proxy server script address, also known as a proxy script or proxy URL, is a specific address that points to a script or a web page containing instructions for connecting to a proxy server. This script or web page can be written in various programming languages, such as PHP, Perl, or Python, and it typically contains the configuration settings and parameters required to connect to a proxy server.

When you visit a website or access an online resource, your browser or application may use a proxy server to route your traffic. In some cases, you might need to manually configure your browser or application to use a specific proxy server. To do this, you would need the proxy server's script address, which you can then enter into the appropriate settings field.

For example, you might encounter a proxy server script address in the following format:

http://:@:/

Here, and represent the proxy server's authentication credentials, is the proxy server's IP address or hostname, is the proxy server's port number, and is the path to the proxy script on the proxy server.

A server proxy is software installed on a computer on a network that allows you to make requests to other computers on your behalf. A server proxy is a kind of intermediary that ensures the secure exchange of data.

Most users use A-Parser for this purpose. It is one of the best applications for checking web applications. There is a corresponding tab, "Proxy server", in the standard menu of A-Parser. It is where you can specify the settings for the connection. And in the "Tools" section you can use parameters for parsing.