# How to Read a Qualified Electronic Signature

### **Installation**

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To use qualified electronic signature you have to:

* Install special software on your PC.
* Update your OS and browser to the latest version.
  {% endhint %}

1. Download and install crypto library ([MacOS](https://iit.com.ua/download/productfiles/EUSignWebInstall.pkg) , [Windows](https://iit.com.ua/download/productfiles/EUSignWebInstall.exe)) to access your qualified keys.
2. Add [browser extension](https://chrome.google.com/webstore/detail/%D1%96%D1%96%D1%82-%D0%BA%D0%BE%D1%80%D0%B8%D1%81%D1%82%D1%83%D0%B2%D0%B0%D1%87-%D1%86%D1%81%D0%BA-1-%D0%B1%D1%96%D0%B1%D0%BB/jffafkigfgmjafhpkoibhfefeaebmccg?utm_source=chrome-app-launcher-info-dialog) to access crypto library from browser.
3. Reboot your PC.

### **Read the key**

1. Wait until process of a device search is finished.
2. Select your hardware key, enter the key password and click the **Read key** button.
   * if you entered the valid password and key is valid you will see the signature details and the next form of the modal window, if not you will see the error message
3. As soon as you entered the valid data you will see the information related to key with which you want to sign the document.

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<figure><img src="/files/sBYfNG29abEuImcuibK7" alt="" width="375"><figcaption></figcaption></figure>
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