scope:

Based on a scoping study and survey with respect to long-term preservation techniques for digital signatures and general data documented in ETSI SR 019 510 [i.13], the present document and its companion document ETSI TS 119 511 [i.14] have been created.

ETSI TS 119 511 [i.14] specifies policy and security requirements for trust service providers providing long-term preservation of digital signatures and of general data, i.e. unsigned data or signed data, using digital signature techniques.

The present document complements ETSI TS 119 511 [i.14] and specifies protocols for trust service providers providing long-term data preservation services of digital signatures and of general data (i.e. unsigned data or signed data).

Specifically, but not exclusively, digital signatures in the present document cover electronic signatures, advanced electronic signatures, qualified electronic signatures, electronic seals, advanced electronic seals, and qualified electronic seals as per Regulation (EU) No 910/2014 [i.1].

The present document first addresses general aspects (see clause 4) such as a system architecture for preservation, which contains a preservation interface offered by the preservation service and used by the client (see clause 4.1). The preservation service may aim at different preservation goals (see clause 4.2), may or may not provide storage functionality (see clause 4.3), and provide different profiles of preservation schemes, which may implement different preservation evidence policies (see clause 4.4).

In a second step, the present document specifies methods and data objects constituting a protocol between a client and a long-term data preservation service for the issuance and maintenance of evidences (see clause 5). For each call at the preservation interface it first specifies the semantics in a generic fashion and then specifies the concrete syntax of the conveyed data elements based on XML and JSON together with its binding to SOAP [i.25] and REST respectively.