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Chaum, D., & Heyst, E. V. 1991, Group signatures. Paper presented at Workshop on the Theory and Application of of Cryptographic Techniques. 
Added by: Jack (8/8/22, 2:34 AM)   Last edited by: Jack (8/8/22, 2:40 AM)
Resource type: Proceedings Article
BibTeX citation key: Chaum1991
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Categories: Monero-focused
Creators: Chaum, Heyst
Publisher: Springer
Collection: Workshop on the Theory and Application of of Cryptographic Techniques
Views: 119/320
Attachments   3-540-46416-6_22.pdf [3/77]
Abstract
In this paper we present a new type of signature for a group of persons, called a group signature,
which has the following properties:
(i) only members of the group can sign messages;
(ii) the receiver can verify that it is a valid group signaa~e,but cannot discover which group member made it;
(iii) if necessary, the signature can be "opened", so that the person who signed the message is revealed.

These group signatures are a "generalization" of the credential/ membership authentication schemes, in which one person proves that he belongs to a certain group.
We present four schemes that satisfy the properties above. Not all these schemes are based on the same cryptographic assumption. In some of the schemes a trusted center is only needed during the setup; and in other schemes, each pason can create the group he belongs to.
  
Notes
Saberhagen referenced this paper as the inspiration for using membership proofs to conceal the sender.
Added by: Jack  Last edited by: Jack
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