Security Cryptanalysis of Two Group Signature Schemes

Chen Yan-ling; Chen Lu-sheng; Fu Fang-wei

Volume 27 Issue 2

Feb. 2005

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Article Navigation > Journal of Electronics & Information Technology > 2005 > 27(2): 235-238

Chen Yan-ling, Chen Lu-sheng, Fu Fang-wei . Security Cryptanalysis of Two Group Signature Schemes[J]. Journal of Electronics & Information Technology, 2005, 27(2): 235-238.

Citation:

Chen Yan-ling, Chen Lu-sheng, Fu Fang-wei . Security Cryptanalysis of Two Group Signature Schemes[J]. Journal of Electronics & Information Technology, 2005, 27(2): 235-238.

Chen Yan-ling, Chen Lu-sheng, Fu Fang-wei . Security Cryptanalysis of Two Group Signature Schemes[J]. Journal of Electronics & Information Technology, 2005, 27(2): 235-238.

Citation:

Chen Yan-ling, Chen Lu-sheng, Fu Fang-wei . Security Cryptanalysis of Two Group Signature Schemes[J]. Journal of Electronics & Information Technology, 2005, 27(2): 235-238.

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Security Cryptanalysis of Two Group Signature Schemes

Received Date: 2003-10-09
Rev Recd Date: 2004-03-09
Publish Date: 2005-02-19

Abstract

Abstract

Group signature schemes allow a group member to anonymously sign on groups behalf. Moreover, in case of anonymity misuse.a group manager can recover the issuer of a signature. This paper analyzes the security of two group signature schemes recently proposed respectively by Posescu (2000) and Wang Xiaoming (2003), and shows that both schemes are universally forgeable, that is, anyone (not necessarily a group member) is able to produce a valid group signature on an arbitrary message, which cannot be traced by the group manager. So both schemes are insecure.

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References(1)

References

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