Proxy divisible E-cash system with finite warrant period

Abstract

To increase the flexibility of proxy divisible E-cash system and decrease its communication and computational complexity,and to revoke proxy power after finite warrant period,a new proxy divisible E-cash system based on discrete logarithm proxy signature and discrete logarithm zero knowledge proof is presented.The new scheme satisfies non-forgeability,nonrepeatability,coin tracing and owner tracing that common E-cash possess security requirement.Finally,compared with divisible E-cash system based on 2-node tree partition method,the study shows that the new scheme is based simple subtration partition method and has high efficiency and low communication.