How to convert any digital signature scheme into a group signature scheme

1998 ◽  
pp. 177-190 ◽  
Author(s):  
Holger Petersen
Keyword(s):  
Digital Signature ◽  
Group Signature ◽  
Signature Scheme ◽  
Digital Signature Scheme

scholarly journals A New Approach to Keep the Privacy Information of the Signer in a Digital Signature Scheme

Information ◽  
2020 ◽  
Vol 11 (5) ◽  
pp. 260
Author(s):  
Dung Hoang Duong ◽  
Willy Susilo ◽  
Viet Cuong Trinh
Keyword(s):  
Digital Signature ◽  
Group Signature ◽  
Encryption Scheme ◽  
Signature Scheme ◽  
Secret Key ◽  
New Approach ◽  
Designated Verifier ◽  
Designated Verifier Signature ◽  
Digital Signature Scheme ◽  
Responsible Person

In modern applications, such as Electronic Voting, e-Health, e-Cash, there is a need that the validity of a signature should be verified by only one responsible person. This is opposite to the traditional digital signature scheme where anybody can verify a signature. There have been several solutions for this problem, the first one is we combine a signature scheme with an encryption scheme; the second one is to use the group signature; and the last one is to use the strong designated verifier signature scheme with the undeniable property. In this paper, we extend the traditional digital signature scheme to propose a new solution for the aforementioned problem. Our extension is in the sense that only a designated verifier (responsible person) can verify a signer’s signature, and if necessary (in case the signer refuses to admit his/her signature) the designated verifier without revealing his/her secret key is able to prove to anybody that the signer has actually generated the signature. The comparison between our proposed solution and the three existing solutions shows that our proposed solution is the best one in terms of both security and efficiency.

scholarly journals Improvement to Nyang-Song fast digital signature scheme

1997 ◽  
Vol 33 (22) ◽  
pp. 1861 ◽  
Author(s):  
Wei-Hua He ◽  
Tzong-Chen Wu
Keyword(s):  
Digital Signature ◽  
Signature Scheme ◽  
Digital Signature Scheme

scholarly journals Digital signature scheme on the 2 x 2 matrix algebra

2021 ◽  
Vol 17 (3) ◽  
pp. 254-261
Author(s):  
Nikolay A. Moldovyan ◽  
◽  
Alexandr A. Moldovyan ◽  
Keyword(s):  
Digital Signature ◽  
High Performance ◽  
Matrix Algebra ◽  
Multiplicative Group ◽  
Discrete Logarithm ◽  
Signature Scheme ◽  
The Public ◽  
Signature Generation ◽  
Commutative Subalgebras ◽  
Digital Signature Scheme

The article considers the structure of the 2x2 matrix algebra set over a ground finite field GF(p). It is shown that this algebra contains three types of commutative subalgebras of order p2, which differ in the value of the order of their multiplicative group. Formulas describing the number of subalgebras of every type are derived. A new post-quantum digital signature scheme is introduced based on a novel form of the hidden discrete logarithm problem. The scheme is characterized in using scalar multiplication as an additional operation masking the hidden cyclic group in which the basic exponentiation operation is performed when generating the public key. The advantage of the developed signature scheme is the comparatively high performance of the signature generation and verification algorithms as well as the possibility to implement a blind signature protocol on its base.

scholarly journals Digital Signature Scheme for Image

2012 ◽  
Vol 49 (16) ◽  
pp. 1-6
Author(s):  
Kanchan K.Doke ◽  
S. M. Patil
Keyword(s):  
Digital Signature ◽  
Signature Scheme ◽  
Digital Signature Scheme
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