Sign with the Portasignatures AOC from Android

First, you need to export the certificate file to your Android device so you can install it or call it later from Portasignatures. To do this, you will need the original installation file or, if you don't have it, you can create a new file by exporting it from a browser where you have it installed . The file will have the extension .p12 or .pfx.

Once you have the certificate file, you must follow these steps:

• Send the file to a mailbox that you manage from your Smartphone or tablet or upload it to Drive or another cloud service.
• Save the file to a location on your Android device.

Important: This step is not essential, as it is possible to sign without having the certificate installed, just having it saved within the device files or on the drive. If you prefer not to install the certificate, you can go directly to the next step.

To install the certificate, run the file with the .p12 or .pfx extension, which you have saved to a location on your device, by clicking on it.

The system will ask you for the password you used to protect the file when exporting. If it is a T-CAT P and the file is the original (not an export), the file password is the suspension code received in the download email.

You will then be asked for a name for the certificate, we recommend that you give it a sufficiently identifying name.

Once the name is added, the system will notify you that it has been installed correctly.

To be able to sign with the Portasignatures from an Android device, you must download the Viafirma Mobile application from Google Play.

Once both the certificate (if you have decided to install it) and the Viafirma Mobile application have been installed, if you are a Portasignatures user, you can access the tray from your mobile device by accessing https://portasignatures.aoc.cat/ in a browser or by clicking on the link that you will receive in your email inbox when you have a pending request. In case you only receive documents to sign as an external user to the tool, you will only be able to access it from the link in the email.

When accessing Portasignatures of AOC either from the direct link or from the link in the email, you must click on the button to access with a certificate.

Once you click on “Log in with local certificate” you will be redirected to the Viafirma Mobile app.

You have two ways to authenticate:

• Credential Keychain: Refers to the certificate installed on the device.
• P12 or Pfx format: With this option, it would not be necessary to install the certificate, we would only have to have it among our files within the Android device and we would have to indicate the installation code every time we use it.

Once you have selected the desired option, you will enter the tray of petitions pending signature. Here you simply need to choose the petition you want to sign, review it and press “Signature with local certificate”.

You will then again have the option to choose between the installed certificate or the .p12 or .pfx file. Once the option has been chosen and the pin indicated, if applicable, the system will display a warning that the document has been correctly signed.