Cryptanalysis of A Threshold Signature Scheme for Group Communications without a Shared Distribution Center(WSANE2006)

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概要

• 論文の詳細を見る

• Recently, Chang, Yang and Hwang proposed a threshold signature scheme for group communications without a shared distribution center, which includes a (t, n) threshold signature process and a (k, l) threshold verification process. In their scheme, any t participants can represent a group (signing group) to sign a message, and any k participants can represent another group (verifying group) to verify the signature. However, their scheme is insecure. In this paper, we shall make some cryptanalysis on their scheme and show that it violates the requirement upon the (t, n) threshold signature with (k, l) threshold-shared verification.

• 社団法人電子情報通信学会の論文
• 2006-04-03

著者

• Wang Yumin

  State Key Lab. Of Integrated Service Networks Xidian Univ.

• Pang Liaojun

  State Key Lab. of Integrated Service Networks, Xidian Univ.

• Li Huixian

  State Key Lab. of Integrated Service Networks, Xidian Univ.

• Pang Liaojun

  State Key Lab. Of Integrated Service Networks Xidian Univ.

• Li Huixian

  State Key Lab. Of Integrated Service Networks Xidian Univ.

関連論文

• Cryptanalysis of A Threshold Signature Scheme for Group Communications without a Shared Distribution Center(WSANE2006)
• Verification of Trusted Network Access Protocols in the Strand Space Model
• A Trusted Network Access Protocol for WLAN Mesh Networks

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