NDLI: Practical Secret Signature Scheme with No Randomness Saving

Content Provider	IEEE Xplore Digital Library
Author	Byoungcheon Lee
Copyright Year	2013
Description	Author affiliation: Dept. of Inf. Security, Joongbu Univ., Geumsan, South Korea (Byoungcheon Lee)
Abstract	Secret signatures, proposed by Lee \textit{et al.} \cite{LCYY07,LLK09}, provide signature privacy and public provability at the same time. Using these schemes a signer can send his signature secretly to a designated receiver such that only the designated receiver can verify the signature. Moreover, if any argument occurs between them, the validity of the secret signature can be proven publicly either by the signer or the receiver. But in these schemes one of the drawback is that the signer has to keep the random number used in the signing algorithm for later use, i.e., to provide public provability. This is very impractical in the real world, since random numbers used in many cryptographic algorithms are generally used only once and they have to be removed safely for security reason. In this paper we amend Lee \textit{et al.}'s secret signature scheme such that random number is replaced by a pseudo random number that can be computed only by the signer as a function of signer's private key and timestamp. With this change signer can compute the pseudo random number at any later time that he doesn't need to save it anymore, and it can be computed only by the signer. With this change we think that secret signature scheme becomes more practical and can be used as an important cryptographic primitive to achieve signature privacy in the real world.
Starting Page	1
Ending Page	3
File Size	90291
Page Count	3
File Format	PDF
ISBN	9781479928453
DOI	10.1109/ICITCS.2013.6717872
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-12-16
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Privacy Receivers Encryption Digital signatures Business
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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