Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9507104 | Applied Mathematics and Computation | 2005 | 7 Pages |
Abstract
Key authentication is very important in secret communications and data security. Recently, Lee, Hwang and Li proposed a new public key authentication scheme for cryptosystems with a trusty server. However, in this paper, we will show that Lee-Hwang-Li's key authentication scheme is not secure, from the obtained public information, any one can get the private key of the user. And then, we propose an improved scheme. We conclude that our new key authentication scheme not only resolves the problems appeared but also is secure.
Keywords
Related Topics
Physical Sciences and Engineering
Mathematics
Applied Mathematics
Authors
Fangguo Zhang, Kwangjo Kim,