The e-health system enables online healthcare by supporting health data transmission services on medical platforms. Considering the frequent privacy breaches in e-health systems and the issuance of relevant regulations, it is important to ensure the authenticity and privacy of health data. Existing e-health systems either fail to provide data authenticity or neglect privacy protection after patients leave the system. In this article, we put forward a secure and efficient e-health system for data transmission, named PPED, to solve this dilemma. In PPED, we explore a regular signature and a forward-secure signature, which guarantee data authenticity and give the signature a valid period. Then, a specific epochal signature scheme is designed by combining two signature schemes with the time-lock puzzle. Since expired epochal signatures are forgeable, patients after leaving the e-health system can forge expired signatures to deny their relationship with the signed data, thus achieving privacy protection. Detailed security analysis demonstrates the PPED realizes data authenticity and user privacy. Extensive experiments evaluate our system and the results show it is practical in terms of running time.

中文翻译：

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一个真实且保护隐私的电子健康数据传输服务


电子健康系统通过支持医疗平台上的健康数据传输服务来实现在线医疗保健。考虑到电子卫生系统中频繁的隐私泄露和相关法规的发布，确保健康数据的真实性和隐私性非常重要。现有的电子医疗系统要么无法提供数据真实性，要么在患者离开系统后忽视隐私保护。在本文中，我们提出了一种安全高效的数据传输电子健康系统，称为 PPED，以解决这一困境。在 PPED 中，我们探索了常规签名和正向安全签名，它们可以保证数据的真实性并赋予签名一个有效期。然后，通过将两种签名方案与时间锁定谜题相结合，设计出一个特定的 epochal signature scheme。由于过期的纪元签名是可伪造的，患者离开电子健康系统后可以伪造过期签名，否认自己与签名数据的关系，从而实现隐私保护。详细的安全分析表明 PPED 实现了数据真实性和用户隐私。广泛的实验评估了我们的系统，结果表明它在运行时间方面是实用的。