Improved Forward-secure Proxy Signature Scheme
Jianzhong Zhang · Jisuanji gongcheng · 2007
A secure problem in a forward-secure proxy signature scheme is pointed out,the proxy signer’s key does not satisfy the forward-security,so that the original scheme is insecure once the adversary gets the proxy signer’s key.The improved scheme proposes an evolution on proxy signer’s key,under the strong RSA assumption,the new scheme is truly forward secure.