Proxy signatures for delegating signing operation
CCS '96 Proceedings of the 3rd ACM conference on Computer and communications security
A method for obtaining digital signatures and public-key cryptosystems
Communications of the ACM
On Zhang's Nonrepudiable Proxy Signature Schemes
ACISP '98 Proceedings of the Third Australasian Conference on Information Security and Privacy
Secure Mobile Agent Using Strong Non-designated Proxy Signature
ACISP '01 Proceedings of the 6th Australasian Conference on Information Security and Privacy
ICICS '97 Proceedings of the First International Conference on Information and Communication Security
A Practical (t, n) Threshold Proxy Signature Scheme Based on the RSA Cryptosystem
IEEE Transactions on Knowledge and Data Engineering
A fair protocol for signing contracts
IEEE Transactions on Information Theory
A public key cryptosystem and a signature scheme based on discrete logarithms
IEEE Transactions on Information Theory
An efficient nonrepudiable threshold proxy signature scheme with known signers
Computer Communications
Security Analysis of the Pomykala-Barabasz Scheme
Fundamenta Informaticae
Eliptic Curve Based Threshold Proxy Signature Scheme with Known Signers
Fundamenta Informaticae
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Previously, all of the proposed threshold proxy signature schemes which have been based on the discrete logarithms required a protocol to generate and verify a shared secret among the proxy group. Therefore, it is necessary for the proxy signers to execute a lot of expensive modular exponential computations and communications to obtain and verify a shared secret. Thus, it is very time-consuming to construct the proxy signature. Moreover, some of the existing threshold proxy signature schemes reveal that the receiver cannot find out who signed the proxy signatures. In this paper, we proposed a practical, efficient, and low communications (t, n) threshold proxy signature scheme based on RSA cryptosystem. By using our way, not only the original signer can know who generated the proxy signature, but also everyone can be a verifier to certify the actuality of the group signers who made it. So, it is very convenient to clarify the responsibility of the document's signers fairly.