Proceedings of the 7th Software Security, Protection, and Reverse Engineering / Software Security and Protection Workshop

2017 ◽  
Keyword(s):  
Reverse Engineering ◽  
Software Security ◽  
Security And Protection ◽  
Engineering Software

Study on Parametric Reverse Modeling

2014 ◽  
Vol 721 ◽  
pp. 230-233
Author(s):  
Shuang Xi Hu
Keyword(s):  
Reverse Engineering ◽  
3D Modeling ◽  
Point Clouds ◽  
Hybrid Modeling ◽  
Design Intent ◽  
Engineering Software ◽  
Modeling Software

Methods about parametric reverse modeling have been studied based on products’ point clouds by comparing model rebuilding processes in different ways, such as collaborative reconstruction based on both reverse engineering software Geomagic and 3D modeling software, reverse and forward hybrid modeling based on Rapidform. It‘s concluded that reverse and forward hybrid modeling based on Rapidform takes more advantages in parametric reverse modeling, It is more rapid , accurate, and closer to the design intent.

Development and evaluation of a digital dental modeling method based on grating projection and reverse engineering software

2016 ◽  
Vol 115 (1) ◽  
pp. 42-46 ◽  
Author(s):  
Qin Zhou ◽  
Zhenzhen Wang ◽  
Jun Chen ◽  
Jun Song ◽  
Lu Chen ◽  
...  
Keyword(s):  
Reverse Engineering ◽  
Modeling Method ◽  
Engineering Software

Technique of Code Obfuscation Based on Class Splitting

2012 ◽  
Vol 271-272 ◽  
pp. 636-640
Author(s):  
Yong Yong Sun ◽  
Guang Qiu Huang
Keyword(s):  
Reverse Engineering ◽  
Static Analysis ◽  
Object Oriented ◽  
Class Structure ◽  
Software Protection ◽  
Sensitive Data ◽  
Code Obfuscation ◽  
Engineering Software ◽  
Definition Of

The security of software is threatened by piracy, tampering and reverse engineering. Attackers attempt to get important algorithms and sensitive data of software by static analysis or reverse engineering. Software protection becomes an important problem. The algorithm of code obfuscation based on class splitting is proposed that uses of obfuscation technology. The definition of class splitting and realization on algorithm are described. At the same time, the performance on algorithm is analyzed. The obfuscation method enhances the degree of complication about program and static analysis becomes more difficult. The algorithm is applicable to object-oriented program with class structure.

Geometric Analysis of Pipeline Elbows Through Reverse Engineering and Their Associated Imperfections

2014 ◽  
Author(s):  
Muntaseer Kainat ◽  
Celal Cakiroglu ◽  
Samer Adeeb ◽  
J. J. Roger Cheng ◽  
Michael Martens
Keyword(s):  
Reverse Engineering ◽  
Wall Thickness ◽  
Geometric Analysis ◽  
Laser Scanner ◽  
Initial Imperfection ◽  
3D Models ◽  
Element Analysis ◽  
Engineering Software ◽  
Pipe Elbow ◽  
The Ideal

Pipe elbow is a common feature in pipelines and piping systems as a means to changing directions of otherwise straight pipelines. Irrespective of the processes involved in manufacturing pipe elbows, it is of interest to investigate whether they have any geometric imperfections. Researchers at the University of Alberta have devised a technique to measure initial imperfection of straight pipes prior to testing, using high resolution 3D surface profiler in conjunction with 3D reverse engineering software. The objective of the current study is to extend the imperfections measurement technique from measuring straight pipe segments to pipe elbows. Six (6) ninety (90) degree elbows are measured in this research with outside diameters ranging from NPS 12 inch to NPS 42 inch. A 3D laser scanner is used to acquire surface data and create 3D models corresponding to each elbow. A method for the geometric analysis of the elbows is developed using 3D inspection and reverse engineering software Geomagic®. The geometric idealization of a pipe elbow is a torus, which can be defined by a circle revolving around an axis, coplanar with the circle. The idealized geometry for each elbow is obtained through the developed method of geometric analysis, which includes the diameter of the circle defining the torus, and its distance from the axis of revolution. The difference between the ideal torus and the scanned geometry is considered as imperfection of each pipe elbow. The wall thickness values at the ends or edges of select pipe elbows are also measured from the scanned data and are reported as percentage deviation from the specified wall thickness around the perimeter at different cross sections. The 3D reverse engineering of the elbows indicated that they resemble the ideal geometry very closely. The ovalization imperfections are seen to be well within the value specified by CSA Z662-11. The wall thickness deviations are seen to vary between −10% to +25% of the specified value, with increased thickness being more prominent in the elbows. Finite element analysis of an elbow with thickness imperfection shows that higher hoop stress appears on the intrados than initially intended.

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