Filtro 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.

While using Selenium for web automation, it's important to note that websites can detect the presence of automation tools, including Selenium. To reduce the chances of detection, you can take certain measures to make your Selenium-driven browser instance appear more like a regular user. Here are some techniques to hide Selenium from the browser

1. User Agent Spoofing

Change the user agent of the browser to mimic that of a real user. This can be done by setting the user agent string before launching the browser:

from selenium import webdriver

options = webdriver.ChromeOptions()
options.add_argument("--user-agent=Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.124 Safari/537.36")

driver = webdriver.Chrome(options=options)

2. Window Size and Position

Set the window size and position to common values used by human users. This can be done using the set_window_size and set_window_position methods:

driver.set_window_size(1366, 768)
driver.set_window_position(0, 0)

3. Disable Browser Extensions

Disable browser extensions to make the browser instance more similar to a clean user profile:

options.add_argument("--disable-extensions")

4. Headless Mode

Run the browser in headless mode, which means it runs without a graphical user interface. Headless mode can be less likely to be detected:

options.add_argument("--headless")

5. Disable Images and CSS

Some automation detection mechanisms analyze whether images and CSS are loaded. You can disable them:

prefs = {"profile.managed_default_content_settings.images": 2, "profile.managed_default_content_settings.stylesheet": 2}
options.add_experimental_option("prefs", prefs)

6. Change Automation Flags

Some websites use JavaScript to detect automation. You can experiment with changing the values of WebDriver-related flags:

options.add_argument("--disable-blink-features=AutomationControlled")

7. Use Proxies

Rotate IP addresses using proxies to mimic different users accessing the site.

To transfer requests session from Requests to Selenium, you can follow these steps:

First, import the necessary libraries:

from selenium import webdriver
from selenium.webdriver.common.by import By
from selenium.webdriver.common.keys import Keys
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
from requests.sessions import Session

Create a new requests session and perform your requests:

req_session = Session()
response = req_session.get('https://example.com')

Now, create a new Selenium WebDriver instance and pass the requests session as a parameter:

driver = webdriver.Chrome()
driver.get('https://example.com')
req_session_cookies = req_session.cookies.get_dict()
driver.add_cookies(list(req_session_cookies.values()))

Use Selenium to interact with the web page:

search_box = WebDriverWait(driver, 10).until(EC.visibility_of_element_located((By.ID, 'search-box')))
search_box.send_keys('your search query')
search_box.send_keys(Keys.RETURN)

To continue using the same session for subsequent requests, you can create a new requests session with the cookies from the Selenium driver:

selenium_session_cookies = driver.get_cookies()
new_req_session = Session()
for cookie in selenium_session_cookies:
    new_req_session.cookies.set(cookie['name'], cookie['value'])

Now you can use the new_req_session to make new requests while maintaining the same session as the Selenium driver.

Remember to close the Selenium driver after you're done:

driver.quit()

There are several options for its use: bypassing the blocking of websites, shopping in foreign online stores at regional (local) prices, access to a full library of media content, hiding your real IP-address.

It depends on which browser you are using. In Opera, Chrome, Edge a proxy is configured at the level of the operating system itself. In Firefox in the settings there is a special item (in the "Privacy" section).