Formalized security model of multi-proxy signature schemes

2005 ◽  
Author(s):  
Qin Wang ◽  
Zhenfu Cao ◽  
Shengbao Wang
Keyword(s):  
Proxy Signature ◽  
Security Model ◽  
Signature Schemes

Quantum proxy signature with provable security

2020 ◽  
Vol 35 (24) ◽  
pp. 2050197
Author(s):  
Xiangjun Xin ◽  
Qinglan Yang ◽  
Fagen Li
Keyword(s):  
Provable Security ◽  
Proxy Signature ◽  
Quantum Signature ◽  
The Other ◽  
Formal Definition ◽  
Security Model ◽  
Signature Scheme ◽  
Signature Schemes ◽  
Other Hand ◽  
Quantum Proxy Signature

A quantum proxy signature scheme makes the proxy signer can generate a quantum signature on behalf of the original signer. Although many quantum proxy signature schemes have been proposed, none of them can be formally proved to be secure. There is not even security model for the quantum proxy signatures. Some quantum proxy signature schemes have been proved to be insecure against forgery attacks. In this paper, first, the formal definition and the corresponding security model for the quantum proxy signatures are proposed. Second, based on the Hadamard operator and the controlled NOT operation, a new quantum proxy signature scheme is proposed. The security of our quantum proxy signature scheme can be formally proved under security model. The security model of the quantum proxy signatures is helpful for analyzing and improving the security of the quantum proxy signature schemes. On the other hand, compared with the other quantum proxy signatures, the new one proposed in this paper is the first that can be formally proved to be secure under security model.

scholarly journals Secure Proxy Signature Schemes for Delegation of Signing Rights

2010 ◽  
Vol 25 (1) ◽  
pp. 57-115 ◽  
Author(s):  
Alexandra Boldyreva ◽  
Adriana Palacio ◽  
Bogdan Warinschi
Keyword(s):  
Proxy Signature ◽  
Signature Schemes

A Blind Proxy Re-Signatures Scheme Based on Random Oracle

2011 ◽  
Vol 204-210 ◽  
pp. 1062-1065 ◽  
Author(s):  
Yu Qiao Deng
Keyword(s):  
Digital Signature ◽  
Digital Signatures ◽  
Random Oracle ◽  
Proxy Signature ◽  
Public Key ◽  
Signature Scheme ◽  
Signature Schemes

Digital signature schemes allow a signer to transform any message into a signed message, such that anyone can verify the validity of the signed message using the signer’s public key, but only the signer can generate signed messages. A proxy re-signature, which is a type of digital signatures, has significant applications in many areas. Proxy signature scheme was first introduced by Blaze, Bleumer, and Strauss, but that scheme is inefficient and with limited features. After that, some Proxy re-signature schemes were proposed by researchers. This paper constructs a blind proxy re-signatures scheme. Comparing to the previous proxy re-signature schemes, the scheme adds a message blinded feature, and then the security of the scheme is proven.

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