題名: An RSA-based (t, n) Threshold Proxy Signature Scheme with Freewill Identities
作者: Chang, Y. F.;Chang, C. C.
關鍵詞: cryptography;information security;computer security;proxy
signature;RSA cryptosystems;(t, n) threshold;freewill identities;private key;identity choice
日期: 2007-01
上傳時間: 2009-12-17T06:58:09Z 出版者: Asia University
摘要: Hwang, Lu and Lin (2003) proposed a (t, n) threshold proxy signature scheme, based on the RSA cryptosystem. Later, Wang et al. (2004a) indicated that this scheme was insecure because the original signer's private key could be derived. Moreover, the delegates' identities had to be chosen carefully. In this paper, we propose an improved RSA- based (t, n) threshold proxy signature scheme, which withstands this
security flaw and also offers the convenience of choosing identities at will.