How-to guides

How-to guides explain how to complete specific tasks with Redtrust. Each guide focuses on a single goal and assumes you already have Redtrust installed and configured.

First time using a certificate?

Start with Use a digital certificate, the reference guide for any user opening Redtrust for the first time.

Configure your environment

Guides for preparing your browser and credentials before using Redtrust for the first time.

• Configure your browser — Enable the Redtrust extension in Edge, Chrome, or Firefox
• Set and change user PIN — Protect your certificate use with a PIN

Sign and authenticate

Guides for using your certificate in everyday tasks: signing documents, sending signed data to external systems, and authenticating with keys.

• Use a digital certificate — Reference guide for using a certificate with Redtrust for the first time
• Download a Firmaprofesional certificate — Download a Firmaprofesional-issued certificate using the one-time download code
• Securely sign PDFs — Sign PDF documents with Adobe Acrobat Reader
• Sign emails with a certificate — Sign emails in new and classic Outlook using S/MIME
• Submit tax reporting data to AEAT with curl — Send SII and VeriFacTu records to AEAT using curl
• Unattended signing of documents with AutoFirma — Automate batch document signing with AutoFirma on Linux
• Configure SSH key-based authentication — Authenticate to SSH servers using keys stored in Redtrust

Configure access

Guides for administrators defining which applications and domains users can access with their certificates.

• Create a policy — Grant access to applications or websites through a policy
• Set up unattended browsers — Use certificates in browsers without the extension in automated environments
• Restrict access by browser — Block specific browsers from accessing Redtrust
• Restrict access to an AEAT procedure — Restrict access to a specific procedure on an AEAT portal using policies
• Define access to eCAC — Configure access to the Brazilian tax authority's eCAC portal
• Define domain access using application-based authentication — Configure domains for application-based authentication, such as PJE Office
• Define domain access for sites using a centralized authentication gateway — Control certificate use on services that authenticate through a centralized gateway

Maintenance

Guides for keeping your Redtrust installation healthy.

• Update license — Renew or update the license from the admin console
• Backup and restore — Create and restore Redtrust backups
• Downgrade unit — Roll back to a previous version of Redtrust
• Update a CA certificate — Renew or replace a CA certificate and agents receive it automatically