Results 281 to 290 of about 377,166 (313)
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An Improved Group Signature Scheme
2005As a special digital signature, a group signature scheme allows a group member to sign message on behalf of the group in an anonymous and unlinkability way, In case of a dispute, a designated group manager can reveal the actual identity of the signer. Anonymity and unlinkability are basic properties of group signature, which distinguish other signature
Jianhong Zhang 0001 +2 more
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Proceedings of the 3rd international conference on Information security, 2004
Suppose that there are n departments in a company Ω and any dept. has the right to sign a message on behalf of the company. The group signature made by the dept. should be agreed by the members whose number is over the threshold. The Receiver can verify the validity of the signature but can't distinguish which dept. the signature comes from.
Chunbo Ma, Jun Ao, Dake He
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Suppose that there are n departments in a company Ω and any dept. has the right to sign a message on behalf of the company. The group signature made by the dept. should be agreed by the members whose number is over the threshold. The Receiver can verify the validity of the signature but can't distinguish which dept. the signature comes from.
Chunbo Ma, Jun Ao, Dake He
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Computing, 2009
The authors design a new kind of signature which is the title of the paper. In this scheme the signer is the only person who may prove that they were not the signer. This reverses the usual situation. Their scheme allows more convenient personal data protection rules, given that the signer is not revealed, so their is no requirement to protect this ...
Marek Klonowski +3 more
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The authors design a new kind of signature which is the title of the paper. In this scheme the signer is the only person who may prove that they were not the signer. This reverses the usual situation. Their scheme allows more convenient personal data protection rules, given that the signer is not revealed, so their is no requirement to protect this ...
Marek Klonowski +3 more
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2006
The main advantage of ring signatures is to ensure anonymity in ad hoc groups. However, since a group manager is not present in ad hoc groups, there is no existing way to identify the signer who is responsible for or benefit from a disputed ring signature. In this paper, we address this issue by formalizing the notion of ad hoc group signature.
Qianhong Wu +3 more
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The main advantage of ring signatures is to ensure anonymity in ad hoc groups. However, since a group manager is not present in ad hoc groups, there is no existing way to identify the signer who is responsible for or benefit from a disputed ring signature. In this paper, we address this issue by formalizing the notion of ad hoc group signature.
Qianhong Wu +3 more
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Adaptable Designated Group Signature
2006An adaptable designated group signature is presented in this paper. In contrast with traditional group oriented signature, the new one laid a strong emphasis on how to improve the signer’s efficiency. In fact, this new type of designated group signature can be seen as a type of designated verifier signature.
Chunbo Ma, Jianhua Li 0001
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Group Signatures with Designated Traceability
2021 Ninth International Symposium on Computing and Networking (CANDAR), 2021Hiroaki Anada +2 more
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Foundations of Group Signatures: The Case of Dynamic Groups
2005Recently, a first step toward establishing foundations for group signatures was taken [5], with a treatment of the case where the group is static. However the bulk of existing practical schemes and applications are for dynamic groups, and these involve important new elements and security issues.
Mihir Bellare, Haixia Shi, Chong Zhang
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2008
Group signatures make it possible for group members to sign messages on behalf of the group, while not revealing the signer's identity. Only the group's revocation manager, who is in possession of a secret key for signature opening, can identify the signer.
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Group signatures make it possible for group members to sign messages on behalf of the group, while not revealing the signer's identity. Only the group's revocation manager, who is in possession of a secret key for signature opening, can identify the signer.
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Tracing-by-Linking Group Signatures
2005In a group signature [19], any group member can sign on behalf of the group while remaining anonymous, but its identity can be traced in an future dispute investigation. Essentially all state-of-the-art group signatures implement the tracing mechnism by requiring the signer to escrow its identity to an Open Authority (OA) [2, 13, 4, 25, 5, 7, 24].
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Group cryptography: Signature and encryption.
Informatica (Slovenia), 2002Summary: Traditional group signature schemes reflect only one side of the spectrum of public cryptography, i.e., signing, where the group public key is used for a sole purpose: verification of group signatures. This paper describes a new group cryptographic system that presents a promise for both signing and encryption.
Yi Mu 0001, Vijay Varadharajan
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