一种安全公平的离线电子现金体制

A Secure Fair Off-Line E-Cash Scheme

匿名的离线电子现金体制与实现中的现金一样 ,很好地保护了用户的稳私 ,但同时也使得司法部门难以追踪像勒索和洗钱这样的犯罪 .公平的离线电子现金体制对其进行了扩展 ,它允许可信方在必要时可以揭开用户的身份或追踪取出的电子钱币 .

Anonymous off-line e-cash protects the customer′s privacy as physical cash does.But it is impossible for a judge to investigate crimes such as blackmailing and money laundering.Fair off-line e-cash extends it by assigning trustees the abilities for identities revoking and coin tracing.A fair off-line e-cash scheme is proposed,in which both electronic coin′s unforgeability and legitimate users′ anonymity are provable.