The API confirms that the certificate used in the signature is a Qualified Certificate (QC) by: 1. Checking its compliance with ETSI EN 319 412 standards. 2. Verifying its revocation status using Certificate Revocation Lists (CRL) and Online Certificate Status Protocol (OCSP). 3. Ensuring that the issuing CA is recognized on EU Trusted List.

A Qualified Electronic Signature (QES) is the highest level of electronic signature under regulations like eIDAS. It provides legal equivalence to handwritten signatures. Validation ensures that the signature is authentic, legally compliant, and has not been tampered with.

The API currently supports validation of QES signatures in PDF and XML document formats.

Yes, the API ensures that validated signatures meet all the legal and technical requirements defined under eIDAS and other relevant electronic signature standards. This makes it suitable for use in legally binding digital transactions.

The API follows a multi-step process to validate QES, including: 1. Extracting the signature and metadata from the document. 2. Performing a cryptographic integrity check to ensure the signature is unaltered. 3. Validating the certificate, checking expiration, revocation status, and compliance with official trusted lists (e.g., EU Trusted List). 4. Ensuring the signature meets eIDAS legal and technical requirements.

The endpoint returns a JSON response containing details about the document, including the total number of signatures, valid signatures, and specific information for each signature, such as validation status, signer details, and certificate information.

Key fields include `documentName`, `summary` (with `totalSignatures` and `validSignatures`), and an array of `signatures` containing details like `signatureId`, `indication`, `signer`, and `signingCertificate`.

The response is structured in a hierarchical format, starting with document-level information, followed by a summary of signatures, and detailed validation results for each signature in an array format.

Users can customize their requests by providing parameters such as the document format (PDF or XML) and the signature data to be validated, ensuring the API processes the correct information.

The endpoint provides information on the validity of signatures, details about the signing certificate, validation time, signing time, and any errors or warnings encountered during the validation process.

Users can analyze the `summary` to assess overall signature validity and review individual `signatures` for detailed validation results, including any errors or warnings, to ensure compliance and authenticity.

The API performs multiple checks, including cryptographic integrity verification, certificate validation against trusted lists, and compliance with eIDAS standards, ensuring high data accuracy and reliability.

Typical use cases include validating electronic contracts, ensuring compliance in legal documents, and verifying signatures in financial transactions, where authenticity and legal validity are crucial.

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