Results 121 to 130 of about 120,111 (165)

A certificateless proxy re-signature scheme

2010 3rd International Conference on Computer Science and Information Technology, 2010
Proxy re-signature is greatly concerned by researchers recently. It is a very useful tool for sharing web certificates, forming weak group signatures, and authenticating a network path. In this paper, we propose the first certificateless proxy re-signature scheme.
null Guo Duntao, null Wei Ping, null Yu Dan, null Yang Xiaoyuan   +3 more
openaire   +1 more source

Provably-Secure Certificateless Proxy Re-signature Scheme

2013 5th International Conference on Intelligent Networking and Collaborative Systems, 2013
The paper proposes a provably-secure certificateless proxy re-signature scheme. Based certificateless public cryptosystem, it solves the using of certificate in certificate-based scheme and removes key escrow in ID-based scheme. Analysis shows that the proposed scheme can satisfy the required properties of a proxy re-signature, and it avoids public key
Haiyan Xiao, Minqing Zhang
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ID-based proxy re-signature without pairing

Telecommunication Systems, 2018
Proxy re-signature is a powerful cryptographic primitive, in which a proxy acts as a translator converts Alice’s signature into Bob’s signature by using the re-signature key. Proxy re-signature is a very useful tool for the interoperable DRM architecture and the passed path proof in cloud computing.
Zhiwei Wang, Aidong Xia, Mingjun He
openaire   +1 more source

Proxy Re-signature Supporting Conditional Delegation

2015 10th International Conference on P2P, Parallel, Grid, Cloud and Internet Computing (3PGCIC), 2015
In proxy re-signature (PRS), a signature computed by Alice's secret key can be transferred to be a new signature by a proxy equipped with the re-signature key, while the new signature can be verified by Bob's public key. However, until now all the PRS scheme have this feature: the proxy can transfer all the delegatee's signature to be the delegator's ...
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A special purpose proxy re-signature scheme

2012 International Conference on Innovations in Information Technology (IIT), 2012
In a proxy re-signature scheme, a semi-trusted entity called proxy is capable of transforming Alice's signature on a message m into Bob's signature on m, with the help of some private information. In this paper, we have addressed the open problem of converting one type of signature into another, this was posed as an interesting issue by Ateniese and ...
S. Sree Vivek, S. Sharmila Deva Selvi, C. Pandu Rangan, C. C Sobin   +3 more
openaire   +1 more source

Proxy Re-signature Schemes

2008
In a proxy re-signature scheme a semi-trusted proxy acts as a translator between Alice and Bob to translate a signature from Alice into a signature from Bob on the same message. In the 12th ACM CCS 2005, Ateniese and Hohenberger presented two secure proxy re-signature schemes based on bilinear maps and left as open challenges the design of multi-use ...
N. R. Sunitha, B. B. Amberker
openaire   +1 more source

Proxy Re-signatures in the Standard Model

2008
This paper studies proxy re-signature schemes. We first classify the expected security notions for proxy re-signature schemes with different properties. We then show how to attack on a recently proposed bidirectional scheme that is purported to be secure without random oracles, and discuss the flaw in their proof.
Sherman S. M. Chow, Raphael C. -W. Phan
openaire   +1 more source

An Efficient Proxy Re-Signature Over Lattices

2019
In 2008, Libert and Vergnaud constructed the first multi-use unidirectional proxy re-signature scheme. In this scheme, the proxy can translate the signatures several times but only in one direction. Thus, two problems remain open. That is, to construct a multi-use unidirectional proxy re-signature scheme based on classical hardness assumptions, and to ...
Mingming Jiang, Jinqiu Hou, Yuyan Guo, Yan Wang, Shimin Wei   +4 more
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On DDos Attack against Proxy in Proxy Re-encryption and Proxy Re-signature

2009 Ninth IEEE International Conference on Computer and Information Technology, 2009
In 1998, Blaze, Bleumer and Strauss proposed new kind of cryptographic primitives called proxy re-encryptionand proxy re-signature. In proxy re-encryption, a proxy cantransform a ciphertext computed under Alice's public key intoone that can be opened under Bob's decryption key. In proxyre-signature, a proxy can transform a signature computed underAlice'
Xu an Wang, Xiaoyuan Yang
openaire   +1 more source

Threshold proxy re-signature: definition and new constructions

Journal of the Chinese Institute of Engineers, 2018
The previous threshold proxy re-signature schemes have been mainly constructed with bilinear maps, the implementations of which are much more time-consuming than exponentiation operations.
Xi Chen, Yun Liu, Lein Harn, Yong Li, Ge Yao   +4 more
openaire   +1 more source