The USB token is a cryptographic device manufactured to generate and protect digital certificates, in order to authenticate the identity of users in secure digital environments.
It emerged in the late 90s, due to the need to have reliable mechanisms for digital signature and security on the Internet, especially with regard to the storage and protection of private keys.
From a physical point of view, a USB token is very similar to a pendrive. However, it is not designed to store conventional data, but to securely safeguard a digital signature certificateissued by an authorized certifying entity in any country or region of the world.
The USB token also ensures that only the owner of the device can access and use the digital signature, since a PIN or password must be entered.
Additionally, compared to other digital security methods, USB tokens offer a higher level of protection as the private keys never leave the device, eliminating any chance that they could be copied.
Due to these features, USB tokens are widely used in sectors such as the financial, government and even legal sectors, where the security of the documents being worked with is critical.
How to configure a USB token and install digital certificates
To correctly use a USB token you must follow a series of steps that will allow you to achieve proper installation and operation.
First of all, you must buy the device, which involves an amount that varies depending on the provider and the encryption technology used by the device.
You also have to request a digital certificate with a certifying entity. The process is not difficult since they usually send it by mail, so when you receive it, you can download the certificate to your USB token.
Insert the device into your computer via the USB port and wait for it to detect the device. Next you have to install the corresponding drivers. They are programs that will allow your computer to recognize and interact with the device without any problems.
Typically, the certification authority will tell you how to download and install all the necessary drivers. Once you finish installing the drivers and you have connected the token, you have to download the certificate issued to you by the certifying entity using the link they provided you. They will also give you the revocation code, in case at any time you want to cancel the certificate.
When you complete this step, then you can start using the token to digitally sign your documents.
Each time you use your USB token, it will ask you to enter a PIN or password to ensure that only you can sign.
When you sign the corresponding digital document, the token will generate a unique cryptographic key and validate that your signature is authentic.
You have to keep in mind that this USB is a 100% personal device. Therefore, you should not share it with other people. In case of theft, loss or damage, contact the certifying entity to request the revocation of the certificate or issue a new one if you want to continue using it.