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Secure XML: The New Syntax for Signatures and Encryption by Kitty Niles, Donald E. Eastlake

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12.1. Levels of XAdES Signature

The ETSI draft defines a series of augmented XML signatures, each of which builds on and requires all information required by the previous type of augmented XML signature. The levels are as follows:

  • XAdES (XML Advanced Electronic Signature)

  • XAdES-T (XAdES with additional time stamp)

  • XAdES-C (XAdES-T with complete validation data references)

  • XAdES-X (XAdES-C with extended validation data)

  • XAdES-XL (XAdES-X with complete validation data information)

  • XAdES-A (XAdES-XL with one or more embedded archival time stamps)

The validation of an electronic signature according to the ETSI draft criterion requires not only the signature, but also a signed signature policy, various signature properties, and validation data such as ...

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