DIN CEN/TS 15121-2-2011 邮政服务.混合邮件.第2部分:电子邮政担保服务(SePS)接口规范.ECPM服务.英文版本CEN/TS 15121-2-2011
Postal Services - Hybrid Mail - Part 2: Secured electronic postal services (SePS) interface specification - ECPM Service; English version CEN/TS 15121-2:2011
This document specifies a secured electronic postal service, referred to as the Electronic Postal Certification Mark (EPCM) service, which provides a chain of evidence, stroed by an administration as a trusted third party, to prove the existence of an electronic event, for a certain content, at a certain date and time, and invoiving one or more indentified parties.