Results 121 to 130 of about 12,645,268 (293)
Cheating immune secret sharing
, 2001 We consider secret sharing with binary shares. This model allows us to use the well developed theory of cryptographically strong boolean functions. We prove that for given secret sharing, the average cheating probability over all cheating and original ...
Josef Pieprzyk +3 more
core +1 more source
World's fastest 10 000‐m breakthrough: The XY‐22 well redefines deep‐earth access in the Tarim Basin
Deep Underground Science and Engineering, EarlyView.The Tarim Basin in northwestern China hosts one of the world's deepest petroleum systems, exemplified by the XY‐22 ultra‐deep well (bottom depth: 11 116 m; ~220°C, ~145 MPa). This study integrates tectonic mapping, geological cross‐sections, ultraviolet fluorescence microscopy, and optical photothermal infrared (OPTIR) spectroscopy to characterize ...
Qingwen Tan +4 more
wiley +1 more source
Secret Image Hiding and Sharing Based on the (t, n)-Threshold
, 2009 [[abstract]]This study proposes a new secret image sharing method based on the (t,n)-threshold. The sharing method is completed through three main steps: (1) quantizing the secret image, (2) generating n shadows from the quantized image, and (3) sharing ...
Chang, C. C. ; Lin, C. Y. ; Tseng, C. S.
core
Deep Underground Science and Engineering, EarlyView.To address seepage‐induced tunnel face collapse, this study develops a two‐phase double‐point MPM framework to capture large‐deformation hydro‐mechanical interactions. Incorporating a cementation‐based constitutive model with dynamic permeability updates, the model is successfully validated against saturated granular‐column collapse experiments ...
Yue Tong +6 more
wiley +1 more source
Deep Underground Science and Engineering, EarlyView.The graphical abstract presents a structured decision‐support framework for assessing the feasibility of converting depleted oil and gas wells into geothermal energy systems. The left panel illustrates a comprehensive, multi‐stage decision‐making framework progressing from prefeasibility screening and technical–economic analysis to policy alignment ...
Karolina Bieryt +3 more
wiley +1 more source
On Converting Secret Sharing Scheme to Visual Secret Sharing Scheme
EURASIP Journal on Advances in Signal Processing, 2010 Traditional Secret Sharing (SS) schemes reconstruct secret exactly the same as the original one but involve complex computation. Visual Secret Sharing (VSS) schemes decode the secret without computation, but each share is m times as big as the original ...
Wang Daoshun, Yi Feng
doaj
Copyright protection for progressive image transmission with qr code and secret sharing applications [PDF]
, 2018 Progressive image transmission (PIT) can be commonly encountered in the browsers due to the bandwidth consumption of different users. With the digital nature of images, they can be easily copied and spread, and hence copyright protection of progressively
H.-C. Huang; Y.-H. Chen; F.-C. Chang; T.-K. Huang
core
Developing a universal tunnel span classification from global tunnel databases
Deep Underground Science and Engineering, EarlyView.A universal tunnel span classification system is introduced that incorporates tunnel span, cross‐sectional area, typical tunnel types, and intended uses. Representative flatness ratio values are also provided for each span class. The classification is derived from a comprehensive database of 450 tunnel profiles from 47 countries.
Simon Heru Prassetyo +8 more
wiley +1 more source
A study of secure Boolean-based multiple secret image sharing scheme
, 2015 碩士 本論文提出一個以(n, n)為門檻值的多重影像秘密分享技術，在此門檻值下可以分享n張秘密影像，並透過本文所提出的演算法產生相同數量的n張分享影像，還原時必須蒐集所有分享影像後才能將秘密影像依序還原。本論文所提出的演算法以XOR布林函式運算為主，故而能有極佳的執行效能。此外，以布林運算為基礎的分享方法，需要使用亂數影像將秘密影像打亂，本論文在分享及還原時，提出亂數影像生成函式，因此在相同數量的分享影像下，可以分享更多數量的秘密影像，也不必耗費額外空間紀錄亂數影像。 相較其他學者所提出的分享方法，
吳緯杰; Wu, Wei-Jie
core +1 more source
A secret image sharing scheme based on array codes
工程科学与技术, 2016 :In order to construct a Perfect and Ideal image threshold secret sharing scheme (Complete Scheme) and improve sharing efficiency, a novel secret image sharing complete scheme based on array codes with a (t, n) threshold structure was proposed.
张景中
doaj