[Abstract]
I will be talking about a method to protect software against
the code analysis, by instruction camouflage. Our method
first overwrites the original instructions with dummy instructions.
Then, the binary program restores the original instructions
within a certain period of execution, by autonomously replacing
the dummy instructions with the original ones. This drastically
increases the complexity of the code analysis, since the analysis
fails if the dummy instructions are inspected as they are. The number
of camouflaged instructions can be tuned by taking protection-performance
tradeoff into account.
[Abstract]
In many cases, we work in a group, and to know the situation each
other, for example "where he/she is?" or "Is he/she busy now?", is
necessary for collaborative work. In my project, I'll construct the
system named "ALTAIR" which automatically detect and tracks the
location of the users. The system uses wireless network, the
combination of IR(Infra-Red)-tags which the user has and wide angle
cameras. In this presentation, I introduce my approach, system, and
plan of my research.
[Abstract]
Global Navigation Satellite Systems (GNSS) is effective in
locating mobile nodes. However, GNSS has limits on accuracy
due to various error factors. In order to enhance the accuracy,
it is necessary to send the error correction data to these
nodes. This data is based on the electric wave data, which is
observed at reference stations, from some satellites. The
position of reference stations has been determined with high
accuracy.
I have proposed the Internet-Based Augmentation System for
GNSS (IBAS) which collects the observation data of the electric
wave from satellites, generates and provides the error
correction data on the Internet. And I have already established
the IBAS, which consists of five reference stations around the
Tokyo bay, and one reference station located at NAIST.
In this presentation, I talk about the system architecture and
the deployment of IBAS. The result of pilot study for our
proposal system is also referred. In conclusion, we consider
the enhancement of the IBAS.