A New Proxy Blind Signature Scheme with Proxy Revocation
Liu Wen-yuan① Tong Feng① Wang Bao-wen① Wang Ya-dong②
①(Information Science and Engineering Institute, Yanshan University, Qinhuangdao 066004, China) ②(Computer Science and Engineering Institute, Harbin Institute of Technology, Harbin 150001, China)
Abstract：According to the problems of proxy revocation, original signer’s forgery and proxy misuse in proxy signature, a secure proxy blind signature scheme with proxy revocation is proposed. In phase of signature, by embedding non-blind time-stamp in the Abe-Okamoto partially blind signature, the original signer can revoke delegation whenever necessary and all valid proxy signatures generated earlier can longer be verified. Besides having the basic properties of the proxy signature, the new scheme prevents proxy misuse, original signer’s forgery and public key substitution attack.
2008, Vol. 30 
