| 本文已被：浏览 4710次 下载 6096次 |
码上扫一扫！ |
|
|
| 指定验证人的(t,n)门限代理签名方案 |
|
王晓明1, 符方伟2
|
|
1.暨南大学,计算机系,广东,广州,510632;2.南开大学,数学科学学院,天津,300071
|
|
| 摘要: |
| 将指定验证人概念引入门限代理签名,提出了一个指定验证人的(t,n)门限代理签名方案.该方案不仅实现了门限代理签名,而且还能实现只有指定验证人一起才能验证门限代理签名的特性.在普通的门限代理签名方案中,任何人都能验证门限代理签名的有效性.然而,在某些情况下,只希望指定的验证人一起才能验证门限代理签名.这在实际中是需要的,如电子商务中的电子投标等.另外,该方案还具有在原始签名人需要时,收回某个代理签名人代理权的特性. |
| 关键词: 数字签名 门限代理签名 指定验证人签名 |
| DOI： |
| 分类号: |
| 基金项目:Supported by the National Natural Science Foundation of China under Grant No.60172060 (国家自然科学基金); the Natural Science Foundation of Guangdong Province of China (广州省自然科学基金); the Natural Science Foundation of Ji'nan University of China (暨南大学自然科学基金) |
|
| A (t,n) Threshold Proxy Signature Scheme with Specified Verifiers |
|
WANG Xiao-Ming,FU Fang-Wei
|
| Abstract: |
| concept of specified verifiers is first introduced into the threshold proxy signature, and a (t,n) threshold proxy signature scheme with the specified verifiers is proposed. In the proposed scheme, any t or more proxy signers can sign a message on behalf of an original signer for the specified verifiers, and only the specified verifiers together are able to verify the validity of the proxy signature. In ordinary (t,n) proxy threshold signature schemes, anyone can verify the validity of the proxy signature. In some applications, however, it is required that a proxy signature could be verified only by the specified verifiers together, that is, no a verifier can gain an advantage of the knowledge of the validity of the proxy signature before the other verifiers know its validity (e.g. tenders, bits). Furthermore, the proposed scheme can also revoke the proxy signature right of the proxy signers delegated by the original signer if original signer needs. |
| Key words: digital signature threshold proxy signature signature for specified verifiers |
