基于DSA的无证书电子病历签名方案*

为了克服传统公钥密码体制及XML数字签名规范用于电子病历，存在签名过长、证书管理复杂的缺陷，本文在无双线性对思想的基础上，构造了一种基于DSA的无证书数字签名方案，按照数字签名规范的要求对签名结构进行了设计，并应用在基于XML的电子病历签名中。实验结果表明，该方案在保证安全性的同时，签名文档明显较短，具有更高的效率。

Certificateless signature scheme of EMR based DSA

To overcome the drawbacks such as long signature document and complex certificate management that caused by traditional public key cryptography and XML signature syntax, this paper puts forward a certificateless signature scheme with DSA and no pairing. According to the XML signature syntax, this scheme designs the structure of XML signature and used in signature scheme of XML-based EMR. The experiment demonstrates that the scheme make the signature document short with good security and high efficiency.