| Improvement of M-U-O and K-P-W proxy signature schemes |
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| 作者姓名： | 李继国 曹珍富 张亦辰 |
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| 作者单位： | 1. Dept. of Computer Science and Engineering，Harbin Institute of Technology，Harbin 150001，China; 2. Dept. of Computer Science，Shanghai Jiao Tong University，Shanghai 200030，China; 3. Dept. of Com |
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| 基金项目： | SponsoredbytheNationalNaturalScienceFoundationofChina (GrantNo.69772 0 3 7,60 0 72 0 18) |
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| 摘 要： | 0 ＩＮＴＲＯＤＵＣＴＩＯＮＩｎ 1996 ,Ｍａｍｂｏ ,Ｕｓｕｄａ,ａｎｄＯｋａｍｏｔｏ1,2 ] ｐｒｏ ｐｏｓｅｄａｎｅｗｃａｔｅｇｏｒｙｏｆｓｉｇｎａｔｕｒｅｓｃｈｅｍｅｃａｌｌｅｄａｐｒｏｘｙｓｉｇｎａｔｕｒｅ .Ｔｈｅｐｒｏｘｙｓｉｇｎａｔｕｒｅｓｃｈｅｍｅａｌｌｏｗｓａｄｅｓｉｇｎａｔｅｄｐｅｒｓｏｎ ,ｃａｌｌｅｄａｐｒｏｘｙｓｉｇｎｅｒ,ｔｏｓｉｇｎｏｎｂｅｈａｌｆｏｆａｎｏｒｉｇ ｉｎａｌｓｉｇｎｅｒ .Ｍａｍｂｏ1] ｅｔａｌｓｈｏｗ ｐｒｏｘｙｓｉｇｎａｔｕｒｅｓｈｏｕｌｄｈａｖｅｐｒｏｐｅｒｔｉ…
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Improvement of M-U-O and K-P-W proxy signature schemes |
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| LI Ji-guo,CAO Zhen-fu,Zhang Yi-chen.Improvement of M-U-O and K-P-W proxy signature schemes[J].Journal of Harbin Institute of Technology,2002,9(2). |
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| Authors: | LI Ji-guo CAO Zhen-fu Zhang Yi-chen |
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| Abstract: | The concept of proxy signature introduced by Mambo, Usuda, and Okamoto allows a designated person, called a proxy signer, to sign on behalf of an original signer in 1996. However, most existing proxy signature schemes does not support nonrepudiation. In this paper, we propose two secure nonrepudiable proxy signature schemes, which overcome disadvantages of M U O and K P W proxy signature schemes, respectively. The schemes proposed can withstand public key substitution attack and forge attack. In addition, our new schemes have some other advantages such as proxy signature key generation and updating using insecure channels. Our approach can also be applied to other ElGamal like proxy signature schemes. |
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| Keywords: | nonrepudiable digital signature proxy signature multi signature |
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