摘要
密钥恢复允许一个授权的机构恢复数据加秘密钥,以恢复被加密信息。传统的密钥恢复主要有两种类型:密钥托管和密钥封装。密钥托管机制因为直接持有用户真正的密钥而缺乏安全性;密钥封装机制固然增强了安全性,但需要设计复杂的加、解密方案,代价昂贵。所以寻找新的既安全又简易的密钥恢复方案有着很大的实用价值。文中提出一种新的基于中国剩余定理的密钥恢复方案。该方案运用简单的模运算,在必要时能恢复用户密钥,比传统的密钥托管更安全,比密钥封装更简捷,有着很好的应用前景。
Key recovery allows an authorized party to retrieve the cryptographic keys used for data confidentiality, with the ultimate goal of the recovery of encrypted data. There are two kinds of traditional key recovery: key escrow and key encapsulation. The key escrow mechanism lacks the security because of directly holding the user's key in deed; the key encapsulation mechanism needs to design the complicated encrypted,decrypted scheme, and thus its cost is valuable, though it improves the security. So there is very large practicality value to search the new secure and simple key recovery scheme. This paper presents a new key recovery scheme based on Chinese remainder theorem, which can recover the user's key using simple modular arithmetic when being required. It is securer than the traditional key escrow,and simpler than key encapsulation, so there are very good application prospects.
出处
《微机发展》
2003年第11期115-116,共2页
Microcomputer Development
