Results 221 to 230 of about 375,287 (267)

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
openaire   +1 more source

Study of the amidase signature group

Biochimica et Biophysica Acta (BBA) - Protein Structure and Molecular Enzymology, 1996
Computer methods for database search, multiple alignment and cluster analysis indicated significant homology between amino-acid sequences of 21 amidases or amidohydrolases (EC 3.5). All of them were found to be involved in the reduction of organic nitrogen compounds and ammonia production.
Chebrou, H., Bigey, Frederic, Arnaud, A., Galzy, P.   +3 more
openaire   +3 more sources

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

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   +4 more sources

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   +2 more sources

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   +2 more sources

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   +2 more sources

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   +2 more sources

An ID-based group signature

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
openaire   +2 more sources

Step-out group signatures

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, Lukasz Krzywiecki, Miroslaw Kutylowski, Anna Lauks   +3 more
openaire   +1 more source