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Universidad de Salamanca
Pablo Gallardo's Blog
My professional web log about IT, Cybersecurity & Project Management

Digital Signatures accepted by Public Administrations of Spain

Digital signature types accepted by Public Administrations of Spain:

  1. XAdES
    1. XAdES-BES
    2. XAdES-EPES
    3. XAdES-T
    4. XAdES-C
  2. CAdES
  3. PAdES

XAdES is used to sign small files (up to 4 MB).

CAdES is used to sign big files (more than 4 MB).

PAdES is used to check the information of both signature and content.

Web portal Valide and @firma work with these signature types.

“FirmaXadesNet” is a .NET library in C# to generate XAdES signatures. Link here.

There is at least the following Java implementation of XAdES:

  • Java XML Digital Signature API
  • Apache Santuario
  • XAdES4j
  • eID Digital Signature Service


External references

  • Portal de Administración Electrónica del Gobierno de España; “Formatos Firma“; Portal de Administración Electrónica del Gobierno de España (Spanish)

About pmgallardo

I studied Computer Science at University of Salamanca. Since then, I have been working first as developer and then as SAP consutant. This blog is about problems I dealt when using computers, and more important, the solutions I found. Whenever I am on an issue and suddenlly I have a flash that leads me to a solution, I document my discoveries in a post.

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