Paper 2009/192
Linkability of Blind Signature Schemes over Braid Groups
Manoj Kumar
Abstract
Blindness and unforgeability are two essential security requirements of a secure blind signature scheme. Blindness means that after interacting with various users, the signer can never be able to link a valid message pair. Blindness is meaningless if after interacting with various users, the signer is able to link a valid message signature pair. This security vulnerability is known as linkability attack. Recently, Verma proposed two blind signature schemes over braid groups. Verma claimed that the proposed schemes are secure against all possible security vulnerabilities and also satisfy all essential securities properties.This paper reviews Verma’s proposed blind signature schemes and found that these scheme do not withstand against the linkability vulnerability.
Metadata
- Available format(s)
-
PDF
PS
- Category
- Applications
- Publication info
- Published elsewhere. Unknown where it was published
- Keywords
- public-key cryptographyBlind signaturelinkabilityblindnessbraid groups
- Contact author(s)
- yamu_balyan @ yahoo co in
- History
- 2009-05-04: received
- Short URL
- https://ia.cr/2009/192
- License
-
CC BY
BibTeX
@misc{cryptoeprint:2009/192,
author = {Manoj Kumar},
title = {Linkability of Blind Signature Schemes over Braid Groups},
howpublished = {Cryptology {ePrint} Archive, Paper 2009/192},
year = {2009},
url = {https://eprint.iacr.org/2009/192}
}
