Results 271 to 280 of about 377,166 (313)

Ring Group Signatures

2012 IEEE 11th International Conference on Trust, Security and Privacy in Computing and Communications, 2012
In many applications of group signatures, not only a signer's identity but also which group the signer belongs to is sensitive information regarding signer privacy. In this paper, we study these applications and combine a group signature with a ring signature to create a ring group signature, which specifies a set of possible groups without revealing ...
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Improving Revocation for Group Signature with Redactable Signature

2021
Group signature is a major cryptographic tool allowing anonymous access to a service. However, in practice, access to a service is usually granted for some periods of time, which implies that the signing rights must be deactivated the rest of the time. This requirement thus calls for complex forms of revocation, reminiscent of the concept of time-bound
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A Group Signature Scheme Committing the Group

2002
In this paper, a group signature scheme committing the group itself is proposed. In normal group signature schemes, a group member can anonymously sign a message on behalf of a group, and the anonymity of the signature can be revoked by only a designated authority. Consider a situation that multiple groups exist.
Toru Nakanishi 0001, Masayuki Tao, Yuji Sugiyama   +2 more
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Group Signatures with Decentralized Tracing

2020
Group signature is a useful cryptographic primitive that allows a message to be signed by a user on behalf of a group which is managed by some trusted authority, namely the group manager. However, group signature schemes typically place a disturbingly high level of trust on the group manager, which has become a major deployment issue in cyber ...
Tingting Lu, Jiangtao Li 0003, Lei Zhang 0009, Kwok-Yan Lam   +3 more
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A convertible group signature scheme

ACM SIGOPS Operating Systems Review, 2004
The digital signature technique is a popular research branch in the field of contemporary cryptography because of its popularity in both economic and official applications. As more and more information gets processed digitally, digital signatures come to play a more and more important role.
Chin-Chen Chang 0001, Yeu-Pong Lai
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Comments on two group signatures

Information Processing Letters, 1999
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Chih-Hung Wang, Tzonelih Hwang, Narn-Yih Lee   +2 more
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Certificateless group inside signature

Proceedings Autonomous Decentralized Systems, 2005. ISADS 2005., 2005
In distributed networks, the signer wants his signature to be verified by anyone in the same group with him and the recipient wants to verify the signature independently. Motivated by this consideration, a certificateless group inside signature is presented in this paper.
Chunbo Ma, FaLiang Ao, Dake He
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Group signatures for hierarchical multigroups

1998
At Eurocrypt'91, D. Chaum and E. Heyst introduced the notion of group signatures, which allow members of a group to make signatures on behalf of the group while remaining anonymous. This paper first presents a new type of group signatures for hierarchical multigroups.
Seungjoo Kim, Sangjoon Park, Dongho Won
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Verifiably Encrypted Group Signatures

2017
Recently, verifiably encrypted signatures (VESs) have been widely used in fair exchange, however most of them do not provide a method to protect the anonymity of the signer, leading to privacy leakage in fair exchange. Verifiably Encrypted Group Signature (VEGS) overcomes drawbacks of VES, which allows a verifier to check its validity without ...
Zhen Wang, Xiling Luo, Qianhong Wu
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On the Security of A Group Signature Scheme

2008 IEEE International Conference on Networking, Sensing and Control, 2008
As 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, the group manager can reveal the actual identity of signer. Anonymity and unlinkability are basic properties of group signature, which distinguish other signature scheme ...
Jianhong Zhang, Qin Geng
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