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SIA · Sistemas Informáticos Abiertos S.A.U.

[PRE] - Qualified Trust Service Provider

Qualified services for electronic signature and electronic seal, time-stamping, and qualified electronic registered delivery. Direct access to documentation, certification hierarchies and validation endpoints (CRL/ARL/OCSP).

Qualified services

Qualified certificate for electronic signature

Qualified certificate for electronic signature

Qualified certificate for electronic signature, in accordance with Regulation (EU) No 910/2014 (eIDAS), enabling the creation of qualified electronic signatures with full legal effect and an unambiguous link to the signatory.

Issuance of qualified certificates (Medium level)
  • Citizen
  • Public Employee
  • Natural Person linked to a Company
  • Natural Person Representative of a Legal Person
  • Natural Person Representative of an Entity without Legal Personality
Issuance of qualified certificates (High level)
  • Citizen
  • Public Employee
  • Natural Person linked to a Company
  • Natural Person Representative of a Legal Person
  • Natural Person Representative of an Entity without Legal Personality

Qualified certificate for electronic seal

Qualified certificate for electronic seal

Qualified certificate for electronic seal, in accordance with Regulation (EU) No 910/2014 (eIDAS), which enables the origin and integrity of data issued by a legal person to be ensured, with full legal effect.

Issuance of qualified seal certificates (Medium level)
  • Electronic Seal
  • Electronic Seal (Public Administrations)
  • Electronic Seal (PSD2)
  • e-Government portal
Issuance of qualified seal certificates (High level)
  • Electronic Seal
  • Electronic Seal (Public Administrations)
  • Electronic Seal (PSD2)
  • e-Government portal

Qualified time stamp

Qualified time stamp

Qualified time-stamping service, in accordance with Regulation (EU) No 910/2014 (eIDAS), providing reliable evidence that data existed at a given time, using a trustworthy and traceable time source.

Issuance of qualified electronic time stamps
  • time-stamping (TSA)

Electronic registered delivery

Qualified electronic registered delivery service

Qualified electronic registered delivery service, in accordance with Regulation (EU) No 910/2014 (eIDAS), ensuring secure transmission of data, identification of sender and recipient, and generation of electronic evidence with legal effect.

Documentation

Certification Authority hierarchies

Certification Authorities and published cryptographic fingerprints for verification.

[PRE] SIA ROOT

Download certificate

SHA256
ba95d9f597c80237c6bd7d4b0cddeea8091641661218dc466a268466c742ffd5
SHA512
cb674f96032779d066e6ab475c474d00ed8de1f5d0242f8ec69a24755dc0d99e739c01fd9197fe3c2e6c0e8aca2ec55f02fcca89bcf1f92765ea2c8bf42e781f
[PRE] SIA SUB01

Download certificate

SHA256
126c013618879ea4964a846af55667bc1e40f39255f7675409c5efbd6d265ea3
SHA512
3450a2230d0c765ef7ca55b624dbc71c8d6c8f0250516fc00de6be5917132acebf2ebea1f42cb9ade9ebb950a5b0c9a930e7ff4ffd63857bcc6d6f1011095cc9
[PRE] SIA ROOT CA 2025

Download certificate

SHA256
bc7ce47e8bde02a34415b9ed9769a0de646e2da162b7953f270dafe7bf04c71b
SHA512
6b1cce9e5315cfc660ad2ca181b58f8f362a8cf2fd38c17ff3a7064a4c0b9a91448c69204ea8383b03827e869af6e8b76e8051b5f0e8ef55669c534049fa0010
[PRE] SIA SUB01 2025

Download certificate

SHA256
f9cd7028ffa01339e34cc88587e406c6aaded35015e6b2bbb6b6661e45e3c0e7
SHA512
e5a639ec97c52e9b59132257a3643833c20e3aa47887bc6fc4ffd54a2c1f1ea53d739d79d0c8a4b5b0a6c481395519e797e17cf1dd19bf38b7db11b5feec49d7

Other authorities (TSA)

[PRE] TSAQC 2022

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VALIDITY
Not before .....: Nov 24 10:21:42 2024 GMT
Not after ......: Feb 26 18:08:01 2030 GMT
SHA256
b430af722d5bb5a35f5408b037355251489eae44e2c0c4b2a18a895c2a881fbf
SHA512
f2769b78be49fd4343612010eb8384e9680d3669a98e4c2006d026c89528869a57721940b9755341ee3b463872f7dbba24b2d4644abf8e6832c295fdfa07baf4
[PRE] TSAQC 2025

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VALIDITY
Not before .....: May 22 10:59:41 2026 GMT
Not after ......: May 19 10:59:41 2036 GMT
SHA256
09a307a2da4923264d1b1436825e1eb46ce009b81abda9bde2bccdffb4d228cd
SHA512
c3c4d5e17ebf5c9408c7137808ddb893e35183383c642a331241a697e8489ad6d42e55761f66a7fdb7b049435c192315f5cd97505590921bb6a3c740bd205b06

Validation

Direct links to CRL/ARL and certificates for validation/OCSP.

CRL

Certificate Revocation List

[PRE] CRL SIA SUB01 Download
[PRE] CRL SIA SUB01 2025 Descargar

ARL

Authority Revocation List

[PRE] ARL SIA ROOT Download
[PRE] ARL SIA ROOT CA 2025 Descargar

OCSP / Signers

OCSP signer certificates

[PRE] HIERARCHY SIA ROOT Download
[PRE] HIERARCHY SIA CA 2025 Download

Revocation

Revocation request

Certificate revocation requests must be sent by email to psc@sia.es, stating the holder’s DNI or NIE and the reason for the request.

Optionally, and in order to facilitate processing, the certificate serial number may be included.

Trusted List (EU)

Check the official register on the trusted list.

Trustmark

External link to the European Union Trusted List