Results 221 to 230 of about 354,171 (267)

Threshold Signatures in Dynamic Groups

Future Generation Communication and Networking (FGCN 2007), 2007
In this paper we present the efficient solution for the dynamical groups with the variable threshold bound. In fact we consider the more general situation, when there is a family of dynamical groups instead of one group. We were able to handle this more general situation by joining the secret sharing idea together with the certification system device ...
Jacek Pomykala, Tomasz Warchol
openaire   +1 more source

Skipping the q in Group Signatures

2020
The notion of group signatures was introduced to allow group members to sign anonymously on behalf of a group. A group manager allows a user to join a group, and another will be able to open a signature to revoke its anonymity. Several schemes have already been proposed to fulfil these properties, however very few of them are proven in the standard ...
Olivier Blazy, Saqib A. Kakvi
openaire   +1 more source

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 ...
openaire   +3 more sources

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
openaire   +1 more source

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
openaire   +1 more source

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
openaire   +1 more source

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
openaire   +1 more source

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
openaire   +1 more source

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
openaire   +1 more source

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
openaire   +1 more source