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. You can find it on this external link.

There are at least the following Java implementations 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)