scope:

The present document defines the checks to be performed for testing conformance of CAdES signatures against extended CAdES signatures as specified in ETSI EN 319 122-2 [2]. It defines only the checks that are specific to extended CAdES signatures. The set of checks that are common to both extended and baseline CAdES signatures, are defined in ETSI TS 119 124-4 [3].

The complete set of checks to be performed by any tool on CAdES extended signatures is the union of the sets defined within the present document and the set of common checks for testing conformance against ETSI EN 319 122-1 [1] and ETSI EN 319 122-2 [2] defined in ETSI TS 119 124-4 [3], as indicated in the normative clauses of the present document.

The present document does not specify checks leading to conclude whether a signature is technically valid or not (for instance, it does not specify checks for determining whether the cryptographic material present in the signature may be considered valid or not). In consequence, no conclusion may be inferred regarding the technical validity of a signature that has been successfully tested by any tool conformant to the present document.

Checks specified by the present document are exclusively constrained to elements specified by CAdES [1].

Regarding CAdES attributes, the present document explicitly differentiates between structural requirements that are defined on building blocks, and the requirements specified for extended CAdES signatures conformance.

The present document is intentionally not linked to any software development technology and is also intentionally agnostic on implementation strategies. This is one of the reasons why the test assertions set specified in the present document includes tests on the correctness of the structure of all the elements specified by CAdES [1].