Meaning
XML advanced electronic signatures specification that extends basic digital signature standards to support long term validity and legal evidence. xades incorporates additional elements like timestamps and certificate status data directly into the XML document. It is specifically designed to meet the requirements of modern electronic commerce and official government regulations.
Metadata Attachment
Structured data files like invoices or medical records require a way to carry their own proof of authenticity. Using xades allows a signer to embed a comprehensive set of unsigned and signed properties within the signature block. Properties included in this block include the exact time of the signature and the full certificate chain of the signer.
This level of detail ensures that even if the original certificate authority goes out of business, the signature can still be verified using historical records.
Signature Persistence
Standard digital signatures can become unverifiable if the underlying infrastructure changes or certificates expire. The xades format addresses this by allowing for the periodic addition of new timestamps that renew the cryptographic protection. This ensures that a signed document remains a legally binding record.
Global Standard
International trade agreements often specify the technical profiles that electronic signatures must follow. Adopting xades ensures that a company’s digital documents are recognized and accepted across different legal jurisdictions. It provides a high level of security for XML based workflows in finance.