La electronic signature is the set of data, in electronic form, that can be used as a means of identifying the signer. It is a string of characters, generated by a mathematical algorithm, which is obtained using as variables the private key and the fingerprint of the text to be signed so that allows to ensure the identity of the signer and the integrity of the message.
The Spanish company Viafirma manages the creation, visualization and especially mobile signature of an image or a document in PDF format. Provides:
- Legality: The only app on the market whose signature is legally equivalent to the handwritten signature in Spain.
- Productivity: Due to the ease of use and time savings of signing documents at any time.
- Security: Offers greater security thanks to the recognized electronic signature.
For this you have different options when signing;
- Digitized signature: It is simply an image of our signature, for unofficial documents it has the same value as the real signature of a document.
- Advanced electronic signature: Signature with software certificate.
According to Art. 3.2 of the law; «The advanced electronic signature is the electronic signature that allows the signer to be identified and to detect any subsequent change in the signed data, which is uniquely linked to the signer and the data to which it refers and which has been created by means that the signer can maintain. under its sole control.«
- Recognized electronic signature: Signature using a combination of software and hardware.
According to Art. 3.3: «A recognized electronic signature is considered an advanced electronic signature based on a recognized certificate and generated by a secure signature creation device."And according to Art. 3.4,"The recognized electronic signature will have the same value with respect to the data consigned in electronic form as the handwritten signature in relation to those consigned on paper.«
Digitized signature
To sign all kinds of documents you will only have to access the app, locate the document or take a photo of it to scan it and convert it to pdf, sign on the screen with your finger and a double tap On the screen in the document, you will be placing the signature on the document you want to sign.
Advanced electronic signature
It is done through a certificate provided by a recognized certifier. The list is on the Tax Agency portal.
Install the certificate, which is a file, usually with the extensions .p12 or .pfx that we will have to introduce into the app through iTunes, it's simple, here is a video on how to do it.
Recognized electronic signature
Es recognized thanks to the DNIe and a reader of smart cards for mobiles that is necessary for the signature to obtain the legal equivalent to the signature on paper. Its cost is $29,95 And although it currently requires an adapter, the company has told me that they are preparing a version with Lightning output.
Viafirma has carried out a video lesson in which you can see the solution in motion:
Conclusions
If you want to test the device and sign manually, is free. It is the most appropriate option for freelancers or freelancers who do not have many interactions with public departments, if this is not the case, request the software certificate and it will also be zero cost.
If it is still not your case because there are several of you who require a signature on the same document and device, you depend on actions with the public administration continuously or any other particularity, then think about the smartcard option.
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