Identity-Based Blind Signature Scheme for Mobile Electronic Payment
Zhen Han · Journal of Beijing Jiaotong University · 2007
Up to today,most of the identity-based signature schemes are implemented with Weil Pairing or Tate Pairing,while the time complexity of these two mechanisms is a little high,so the signature schemes are not fit for mobile network environment.As a result,a new identity-based signature scheme is put forward in this paper,in which,during the course of key extract,the KGC cannot get the user's ID and private key,so the user's privacy is protected.Then an identity-based blind signature scheme is followed.The above two schemes are all based on Elliptic Curve Discrete Logarithm Problem,whose time complexity is low,signature result is short,so it's suit for mobile network environment.Finally,an efficient and divisible electronic payment scheme is presented under the above two signature schemes,whose computational load,storage needed and network load are all light,so it is fit for mobile commerce.