Validation Data

You can configure AdES Signers to return the validation data for the signature. In this case, the following validation data is collected for each signature and certificate in the signature:

• all certificates in the certificate chain that is needed to validate the signature and timestamps
• all CRLs that are needed to validate the signatures and timestamps
• all OCSP responses that are needed to validate the signatures and timestamps

To enable the validation data, you can set the following properties in Signer:

Property	Description	Default Value	Mandatory
WRAP_WITH_VALIDATION_INFO	Enable the collection of validation data for the signature.	false	NO
INCLUDE_CRL_IN_VALIDATION_INFO	Include CRLs in the validation data. If not enabled, the CRLs are not collected and included in the validation data.	true	NO
INCLUDE_OCSP_IN_VALIDATION_INFO	Include OCSP responses in the validation data. If not enabled, the OCSP responses are not collected and included in the validation data.	true	NO
DOWNLOAD_VALIDATION_DATA_FOR_UNTRUSTED_CHAINS	If enabled, the validation data is collected for all certificates in the chain. If not enabled, the validation data is only collected up to the configured trusted anchors.	false	NO

External CMS Signer with Validation Data

If you are using the External CMS Signer, you can get the validation data for the signature and embed it into the resulting PDF document without having to implement the validation data collection yourself, achieving the same result as with the PAdES Signer on Baseline signatures levels B-LT and B-LTA.

Structure of the Validation Data

When enabled, the signature response is returned as a JSON object containing the validationData field:

"signatureData": "MIIdSQYJ...",
"validationData": {
    "crl": [],
    "ocsp": [],
    "certificates": []
}

Where:

• crl is an array of Base64-encoded CRLs
• ocsp is an array of Base64-encoded OCSP responses
• certificates is an array of Base64-encoded certificates

Batch signing

When using batch signatures, the signatureData has a form of JSON object representing the batch signature response as defined in Batch Signing. The validationData is common to all signatures as the signatures were created by the same key.