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Files signing ON-LINE

Platform for electronic signing of documents as per regulation (EU) 910/2014

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A Computer Is Required

This page uses B-Trust BISS to sign documents with a Qualified Electronic Signature (QES). Since B-Trust BISS is not supported on mobile phones or tablets, signing is available only on a computer.

The recommended settings are applied automatically based on your uploaded file. You can change them if needed.

Hash algorithm:

Regulation (EU) No 910/2014 (eIDAS) establishes a common framework for electronic identification and trust services across the European Union. It defines the requirements for electronic signature formats, signature levels, and signature validation, ensuring that qualified electronic signatures are recognized in all EU Member States

CAdES, PAdES, and XAdES are electronic signature formats that comply with European standards for the long-term preservation and validation of signed documents.

At a Glance

CAdES – Used to sign files of any type, including documents, spreadsheets, archives, and images.

PAdES – Used to sign PDF documents. The signature is embedded in and remains part of the PDF file.

XAdES – Used to sign XML files, which are commonly exchanged between information systems and electronic services.

  • CAdES – an electronic signature format that extends the widely used CMS/PKCS #7 standard. It supports multiple signature levels for the long-term preservation and validation of signed documents and can be used to sign files of any type. Signed files use the following extensions: .p7m for ENVELOPING signatures and .p7s for DETACHED signatures.
  • PAdES – an electronic signature format that extends the PDF standard and supports the long-term preservation and validation of signed documents. It can only be used to sign PDF files and supports ENVELOPED signatures only. The signed document retains the .pdf file extension.
  • XAdES – an electronic signature format that extends the XML standard and supports the long-term preservation and validation of signed documents. It can only be used to sign XML files and supports ENVELOPED, ENVELOPING, and DETACHED signatures. The signed document retains the .xml file extension.

Different signature levels can be applied to each electronic signature format. Each level adds information that supports the long-term preservation and validation of the signature.

At a Glance

BASELINE_B – Ensures the authenticity and integrity of the signed document and identifies the signer.

BASELINE_T – Adds a trusted timestamp that proves the signature existed at a specific time.

BASELINE_LT – Enables long-term validation of the signature without requiring additional external check.

BASELINE_LTA – Designed for the long-term preservation and archiving of signed documents.

  • BASELINE_B – the basic electronic signature level. It ensures the integrity of the signed document and provides non-repudiation of the electronic signature.
  • BASELINE_T – the basic signature level by adding a trusted timestamp that provides evidence of the existence of the signature at a specific point in time.
  • BASELINE_LT – extends the basic signature level by adding a trusted timestamp and certificate validation data, including Certificate Revocation Lists (CRLs) and Online Certificate Status Protocol (OCSP) responses.This enables the signature to be validated long after it was created, without requiring any additional information from external sources.
  • BASELINE_LTA – extends Baseline-LT by adding archive timestamps in addition to trusted timestamps and certificate validation data, such as Certificate Revocation Lists (CRLs) and Online Certificate Status Protocol (OCSP) responses. These archive timestamps enable the signature to remain verifiable and its validity to be preserved even many years after it was created. This level is intended for documents that must remain verifiable and valid over a very long period.

The signature packaging type defines where the electronic signature is placed in relation to the signed document.

  • ENVELOPED – The electronic signature is embedded within the signed document. Supported by PAdES and XAdES.
  • ENVELOPING – The signed document is embedded within the electronic signature. Supported by CAdES and XAdES.
  • DETACHED – The electronic signature and the signed document are stored as separate files. Supported by CAdES and XAdES.

SHA-256 and SHA-512 are cryptographic hash algorithms used to protect signed documents and verify their integrity. For most use cases, SHA-256 provides an excellent balance of security and compatibility. SHA-512 should only be used if there are specific security or compliance requirements.

  • SHA-256 – SHA-256 is the most widely used hash algorithm. It provides a high level of security while maintaining broad compatibility with different systems and applications.
  • SHA-512 – SHA-512 generates a longer cryptographic hash, providing additional cryptographic strength. It is suitable for environments with higher security requirements but may not be supported by some legacy systems.

BISS (Browser Independent Signing Service) is an application that enables you to sign documents using a Qualified Electronic Signature (QES) directly from your web browser.

BISS provides the connection between your web browser and your electronic signature device (smart card or USB token).
See the List of Supported Operating Systems.

Before signing documents, you must install BISS on your computer. Administrator privileges are required for installation.

BISS Installation Guide BISS Specification B-Trust BISS Installer