【摘 要】
：
As a kind of cryptocurrency,bitcoin has attracted much attention with its decentralization.However,there is two problems in the bitcoin transactions:the account security and transaction privacy.In view of the above problems,a new partially blind threshold
【机 构】
：
School of Mathematics and Statistics, Xidian University, Xi’an 710071, China
论文部分内容阅读
As a kind of cryptocurrency,bitcoin has attracted much attention with its decentralization.However,there is two problems in the bitcoin transactions:the account security and transaction privacy.In view of the above problems,a new partially blind threshold signature scheme is proposed,which can both enhance the security of bitcoin account and preserve the privacy of transaction.Firstly,transaction amounts are encrypted by employing the homomorphic Paillier cryptosystem,and output address is disturbed by using one-time public key.Then the encrypted or disrupted transaction information is signed by multiple participants who are authorized by using threshold secret sharing.Compared with partially blind fuzzy signature scheme,the proposed scheme can fully preserve the transaction privacy.Furthermore,performance analysis shows that the proposed scheme is secure and effective in practical applications.
其他文献
The compressed sensing matrices based on affine symplectic space are constructed.Meanwhile,a comparison is made with the compressed sensing matrices constructed by DeVore based on polynomials over finite fields.Moreover,we merge our binary matrices with o
Edge is the intrinsic geometric structure of an image.Edge detection methods are the key technologies in the field of image processing.In this paper,a multi-scale image edge detection method is proposed to effectively extract image geometric features.A so
As different requirements on mobility support will be introduced by diversified communication scenarios in the fifth generation (5G),on demand mobility management is put forward to simplify signaling process,reduce terminal power consumption,improve netwo
A high resolution and fast conversion rate time-to-digital converter (TDC) design based on time amplifier (TA) is proposed.The pulse-train TA employs a two-step scheme.The input time interval is first amplified by a N-times TA and the effective time is ex
Aimed at enhancing privacy protection of location-based services (LBS) in mobile Internet environment,an improved privacy scheme of high service quality on the basis of bilinear pairings theory and k-anonymity is proposed.In circular region of Euclidian d
Cloud storage is getting more and more popular as a new trend of data management.Data replication has been widely used to increase the data availability in cloud storage systems.However,most data replication schemes do not fully consider cost and latency
The new encoding tools of high efficiency video coding (HEVC) make the interpolation operation more complex in motion compensation (MC) for better video compression,but impose higher requirements on the computational efficiency and control logic of the ha
Network virtualization provides a powerful way of sharing substrate networks.Efficient allocation of network resources for multiple virtual networks (VNs) has always been a challenging task.Especially under the ever-increasing demand of customized VN requ
With the boom of wireless devices,the number of wireless users under wireless local area networks (WLANs) has increased dramatically.However,the standard backoff mechanism in IEEE 802.11 adopts fixed initial contention window (CW) size without considering
A two-dimensional direction-of-arrival (DOA) estimation method for non-uniform two-L-shaped array is presented in which the element spacing is larger than half-wavelength.To extract automatically paired low-variance cyclically ambiguous direction cosines