Pharow Peter, Blöbel Bernd
Institute for Biometry and Medical Informatics, University of Magdeburg, Germany.
Stud Health Technol Inform. 2003;95:316-21.
Communication and co-operation in healthcare and welfare requires certain Trusted Third Party (TTP) services describing both status and relation of communicating principals as well as their corresponding keys and attributes. Additional TTP services are needed to provide trustworthy information about dynamic issues of communication and co-operation such as time and location of processes, workflow relations, and system behaviour. Electronic signatures based on asymmetric cryptography are important means for securing the integrity of a message or file as well as for accountability purposes including non-repudication of both origin and receipt. These electronic signatures along with certified time stamps are especially important for electronic health records (EHR), electronic archives in general, and other typical purposes of a long-lasting storage. Apart from technical storage problems (e.g. lifetime of the storage devices), this paper needs to look for mechanisms of e.g. re-signing of messages, archive details, or whole archives.
医疗保健和福利领域的通信与合作需要某些可信第三方（TTP）服务，这些服务用于描述通信主体的状态和关系以及它们相应的密钥和属性。还需要额外的TTP服务来提供有关通信与合作动态问题的可信信息，例如流程的时间和地点、工作流关系以及系统行为。基于非对称密码学的电子签名是确保消息或文件完整性以及实现问责目的（包括不可否认消息的来源和接收）的重要手段。这些电子签名与经过认证的时间戳对于电子健康记录（EHR）、一般的电子档案以及其他长期存储的典型用途尤为重要。除了技术存储问题（例如存储设备的使用寿命）之外，本文还需要寻找诸如重新签署消息、存档细节或整个档案等机制。
