Projects

• perfect secrecy chatter
• damcv.de
• msc-kleinhau.de
• com-science.de
• quite simple Linux/Window console chat program
• mx manager
• driver community

perfect secrecy chatter

Idea is a small instant messenger on console. For simplicity e.g. implemented with perl. Take the mersenne-twister already coded in the source section under perl and feed it with random numbers that the sender and the recipient know. To keep the twister synchronized on both sides a index must be stored to jump to the correct position after connection lost or new chat session. For not every time compute the whole sequence we store the last value and index and the random values in the array of the mersenne twister. That is kind of risky but if one knows these numbers she could also take knowledge of the initial values. The perfect secrecy concerns the man-in-the-middle-attack not the one who probably sits already in one of the hosts of communication.

We need 624 initial values for the mersenne twister. 624 * 32-bit values results in 1.5 mb of data. We reduce the transfered data between communication partners if each determine 312 values. Then each sends its data to the other which should could do parallel via a full duplex connection. Afterwards we start the twister and communication.

Openmp implementation of Square-and-multiply and afterwards Miller-Rabin-Primality-Test

Until now the status is only the idea. I have implemented these things in perl but not in C with OpenMP. That will be the next stage. I hope I'll find the time for this soon.

I found pre-work here.

chat client for Linux/Windows

• Quite simple chat program for the console. First to test if the BSD socket concept is also useful on windows hosts. But it is very useful if you have multi platforms in you network and do not have any internet connection or one which is sometimes not functioning. In these cases you can use this program.
• First develop client and server application seperately. Then mix them to one programm with help of threads.
• sound file to play if data occurs. Under Windows is PlaySound() method in api as I saw in Petzold book.
• STATUS:
  • client: waits for input and sends it to the server
  • server: waits for connection and then give the received data to stdout

mx manager

An application to configure a couple of drivers and its data. You can add and edit driver data and their results. The results are given in different ways like gtk-view, pdf, html generation. The complete way for giving points for different places is configureable.

• task 1: create quite simple dialog where you can edit the driver data
• task 2: load xml file into dialog
• task 3: after edit data save the data to xml file
• STATUS: nothing
• TEST:
  • dialogs can be build by galde for windows

driver community

some site similar to one of these which appear each day

com-science.de

• imap server configuration first because we need announcement of an user to get access to smtp
• mail server configuration with sasl and tls

msc-kleinhau.de

ToDo

• msc counter has been realized through google chart api. It need to build into the webpage.

• The header picture needs an update with a fresh animation.

damcv.de

damcv.de