pdftools_sdk.sign.warning_category

Classes

WarningCategory(value)

The warning category

class pdftools_sdk.sign.warning_category.WarningCategory(value)

Bases: IntEnum

The warning category

The category of the warning of pdftools_sdk.sign.signer.WarningFunc() .

Variables:

• PDF_A_REMOVED (int) – PDF/A conformance of input file removed due to file encryption (i.e. pdftools_sdk.pdf.output_options.OutputOptions.encryption is not None). Removal of PDF/A conformance is necessary, because encryption is not allowed by the PDF/A standard.

• SIGNED_DOC_ENCRYPTION_UNCHANGED (int) –

  When processing signed documents, their encryption parameters (user password, owner password, permissions) cannot be changed. Therefore, the property pdftools_sdk.pdf.output_options.OutputOptions.encryption has no effect.

  This warning is generated so that the following situations can be detected:

  • If pdftools_sdk.pdf.output_options.OutputOptions.encryption is None and the input document is encrypted. The output document is also encrypted.

  • If pdftools_sdk.pdf.output_options.OutputOptions.encryption not None and the input document is encrypted using different encryption parameters. The output document is also encrypted, preserving the encryption parameters of the input document.

  • If pdftools_sdk.pdf.output_options.OutputOptions.encryption not None and the input document is not encrypted. The output document is not encrypted.

  Encryption parameters of signed documents can be changed by removing all existing signatures using the property pdftools_sdk.sign.output_options.OutputOptions.remove_signatures . In this case, this warning is not generated.

• ADD_VALIDATION_INFORMATION_FAILED (int) –

  Error adding validation information to existing signatures of input document as requested by pdftools_sdk.sign.output_options.OutputOptions.add_validation_information . The warning’s context contains a description of the affected signature.

  Potential causes of this warning are:

  • Missing issuer certificate: All certificates of the trust chain are required to add validation information. Preferably, the certificates should be present in the cryptographic provider’s certificate store. Alternatively, if supported by the certificate, the issuer certificate is downloaded from the certificate authority’s server and stored in the user’s Certificates directory (see pdftools_sdk.crypto.providers.built_in.provider.Provider ).

  • Network problem: The network must allow OCSP and CRL responses to be downloaded from the certificate authority’s server. Make sure your proxy configuration (see pdftools_sdk.sdk.Sdk.proxy ) is correct.

PDF_A_REMOVED = 1

SIGNED_DOC_ENCRYPTION_UNCHANGED = 2

ADD_VALIDATION_INFORMATION_FAILED = 3