FUZZY UNIVERSAL HASHING AND APPROXIMATE AUTHENTICATION

2011 ◽  
Vol 03 (04) ◽  
pp. 587-607 ◽  
Author(s):  
REIHANEH SAFAVI-NAINI ◽  
DONGVU TONIEN
Keyword(s):  
Universal Hashing ◽  
Data Authentication ◽  
Multiple Messages ◽  
Message Spaces

Traditional data authentication systems are sensitive to single bit changes and so are unsuitable for message spaces that are naturally "fuzzy" where "similar" messages are considered "the same" or indistinguishable. In this paper, we study unconditionally secure approximate authentication. We generalize traditional universal hashing to fuzzy universal hashing and use it to construct secure approximate authentication for multiple messages.

Privacy Secure Data Authentication in Cloud Computing

2018 ◽  
Vol 6 (9) ◽  
pp. 723-731
Author(s):  
Rakesh Prasad Sarang ◽  
Anshu Chaturvedi ◽  
D.N. Goswami
Keyword(s):  
Cloud Computing ◽  
Data Authentication ◽  
Secure Data

Robust Watermarking Scheme for GIS Vector Maps

2018 ◽  
Vol 31 (1) ◽  
pp. 277 ◽  
Author(s):  
Methaq Talib Gaata
Keyword(s):  
Main Idea ◽  
Geospatial Data ◽  
Robust Watermarking ◽  
Digital Map ◽  
Statistical Measures ◽  
Data Authentication ◽  
Two Factors ◽  
Illegal Copying ◽  
Value Decomposition ◽  
Watermarking Scheme

  With the fast progress of information technology and the computer networks, it becomes very easy to reproduce and share the geospatial data due to its digital styles. Therefore, the usage of geospatial data suffers from various problems such as data authentication, ownership proffering, and illegal copying ,etc. These problems can represent the big challenge to future uses of the geospatial data. This paper introduces a new watermarking scheme to ensure the copyright protection of the digital vector map. The main idea of proposed scheme is based on transforming  the digital map to frequently domain using the Singular Value Decomposition (SVD) in order to determine suitable areas to insert the watermark data. The digital map is separated into the isolated parts.Watermark data are embedded within the nominated magnitudes in each part when satisfied the definite criteria. The efficiency of proposed watermarking scheme is assessed within statistical measures based on two factors which are fidelity and robustness. Experimental results demonstrate the proposed watermarking scheme representing ideal trade off for disagreement issue between distortion amount and robustness. Also, the proposed scheme shows  robust resistance for many kinds of attacks.

scholarly journals The informational size of message spaces

1974 ◽  
Vol 8 (2) ◽  
pp. 161-192 ◽  
Author(s):  
Kenneth Mount ◽  
Stanley Reiter
Keyword(s):  
Message Spaces

Broadcast Data Authentication Concepts for Future SBAS Services

2021 ◽  
Author(s):  
Luciano Tosato ◽  
Andrea Dalla Chiara ◽  
Oscar Pozzobon ◽  
Guillermo Fernandez Serrano ◽  
Alessandra Calabrese ◽  
...  
Keyword(s):  
Data Authentication

Implementation an XML Multi-Signature Scheme for XML Data Authentication

2011 ◽  
Vol 65 ◽  
pp. 236-240
Author(s):  
Bao Long Liu ◽  
Hua Chen ◽  
Yi Guo
Keyword(s):  
Signature Scheme ◽  
Hierarchical Network ◽  
Xml Data ◽  
Data Authentication ◽  
Multiple Data ◽  
Xml Signature ◽  
Parallel Graph

XML signature is used to ensure XML data authentication. An XML multi-signature should satisfy multiple data authentication requirements for XML data which passes a hierarchical network of different responsibilities. Based on presented series-parallel XML multi-signature scheme, the implementation of a series-parallel XML multi-signature scheme is illustrated. The paper describes the algorithm for possible XPath in DTD, algorithm for series-parallel graph converting to sub-signing group, and the presentation for signed results.

Universal hashing

2018 ◽  
pp. 93-96
Author(s):  
Juergen Bierbrauer
Keyword(s):  
Universal Hashing
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