可证明安全的可变门限代理重签名方案

已有的大部分门限代理重签名方案的门限值是固定的，而可变门限代理重签名方案更符合实际应用的需求，即根据消息的重要性可灵活地选择不同的门限值进行门限重签名。在Ateniese G等人提出的代理重签名方案S。的基础上，利用中国剩余定理提出了一个具有短公开参数和签名长度的可变门限代理重签名方案，并给出了该方案的安全性证明。根据可变的门限值，每个代理者都能非交互地生成相应的重签名子密钥和验证公钥。与现有方案相比，新方案占用通信带宽低、计算效率高。...

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Bibliographic Details
Published in计算机工程与科学 Vol. 36; no. 7; pp. 1250 - 1254
Main Author 杨小东 张磊 王彩芬
Format Journal Article
LanguageChinese
Published 西北师范大学计算机科学与工程学院,甘肃兰州,730070 2014
Subjects
中国剩余定理
可变门限代理重签名
可证明安全
可证明安全
中国剩余定理
Chinese remainder theorem
provable security
可变门限代理重签名
flexible threshold proxy re-signature
Online AccessGet full text
ISSN1007-130X
DOI10.3969/j.issn.1007-130X.2014.07.007

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Summary:已有的大部分门限代理重签名方案的门限值是固定的，而可变门限代理重签名方案更符合实际应用的需求，即根据消息的重要性可灵活地选择不同的门限值进行门限重签名。在Ateniese G等人提出的代理重签名方案S。的基础上，利用中国剩余定理提出了一个具有短公开参数和签名长度的可变门限代理重签名方案，并给出了该方案的安全性证明。根据可变的门限值，每个代理者都能非交互地生成相应的重签名子密钥和验证公钥。与现有方案相比，新方案占用通信带宽低、计算效率高。
Bibliography:The most existing threshold proxy re-signature schemes have one threshold value. In many practical applications, the number of proxies is often dependent on the significance of the message to be re-signed, which requires the threshold value to be changeable. Based on Ateniese G＇s proxy re-signature scheme Su and the Chinese remainder theorem, a flexible threshold proxy re-signature scheme is proposed, and its security is proved. According to the changeable threshold value, each proxy can non- interactively produce the re-signature private key and the verification public key. Compared with other existing schemes, this scheme can provide better efficiency in terms of the communication and computation cost.
YANG Xiao-dong, ZHANG Lei, WANG Cai-fen （College of Computer Science and Engineering,Northwest Normal University, Lanzhou 730070,China）
43-1258/TP
flexible threshold proxy re-signature;provable security ; Chinese remainder theorem
ISSN:1007-130X
DOI:10.3969/j.issn.1007-130X.2014.07.007