Results 271 to 280 of about 256,005 (297)
Some of the next articles are maybe not open access.
Threshold proxy signature schemes
1998Delegation of rights is a common practice in the real world. Proxy signature schemes have been invented to delegate signing capability efficiently and transparently. In this paper, we present a new nonrepudiable proxy signature scheme. Nonrepudiation means the signature signers, both original and proxy signers, cannot falsely deny later that he ...
openaire +1 more source
Threshold signature schemes for ElGamal variants
Computer Standards & Interfaces, 2011In this paper we present a generic construction of threshold ElGamal signature schemes. We classify ElGamal variants by two types according to ways of generating signatures. Then we develop the generic mechanism to convert a group of ElGamal variants into their threshold versions and prove unforgeability of constructed schemes.
Sungwook Kim 0001 +3 more
openaire +1 more source
A Paillier Based Threshold Signature Scheme
2009 2nd International Conference on Computer Science and its Applications, 2009Based on Paillier public key cryptosystem, a new threshold signature scheme is presented, which under RSA(N,N) assumption, is unforgeable and robust in random oracle model. The scheme enjoys the following properties: signature share gen- eration and verification are non-interactive; and the size of an in- dividual signature share is bounded by a ...
Chuan Chen, Ke-Wei Lv, Yi-Xin Zhu
openaire +1 more source
Orthogonal arrays and ordered threshold schemes [PDF]
Australas. J Comb., 1993 A perfect threshold scheme with threshold \(t\) is a method of sharing a secret key among \(w\) participants such that (i) any \(t\) participants can determine the key from the portions of the \(v\) shadows that they hold, and (ii) if \(t'
Ed Dawson +2 more
openaire +1 more source
Size of Broadcast in Threshold Schemes with Disenrollment
2002Threshold schemes are well-studied cryptographic primitives for distributing information among a number of entities in such a way that the information can only be recovered if a threshold of entities cooperate. Establishment of a threshold scheme involves an initialisation overhead.
Barwick, S. +3 more
openaire +2 more sources
1990
This paper gives constructions of infinite classes of 2, 3 and 4-threshold schemes based on finite incidence structures such as generalised quadrangles and projective planes.
openaire +1 more source
This paper gives constructions of infinite classes of 2, 3 and 4-threshold schemes based on finite incidence structures such as generalised quadrangles and projective planes.
openaire +1 more source
Towards Standardization of Threshold Schemes at NIST
Proceedings of ACM Workshop on Theory of Implementation Security Workshop, 2019The Computer Security Division at the National Institute of Standards and Technology (NIST) is taking steps towards the standardization of threshold schemes for cryptographic primitives. These schemes, applicable to single-device and multi-party implementations, are designed with multiple components in a way to enable essential security properties even
openaire +1 more source
Improvement of threshold proxy signature scheme
Computer Standards & Interfaces, 2004Abstract A (t, n) threshold proxy signature scheme allows any t or more proxy signers to cooperatively sign messages on behalf of an original signer, but t−1 or fewer proxy signers cannot. Sun et al. proposed a new (t, n) threshold proxy signature scheme based on Zhang's threshold proxy signature scheme. Recently, Hsu et al.
openaire +1 more source