pamiętnik programisty

EXIF is metadata containing basic information about taken picture. Most cameras store there parameters ( such as camera manufacturer, resolution, shutter time and so on ) used when picture was taken. It is also possible to store geographical coordinates of a place where photo was done and visualize them on ie. google maps. So far [...]

There are many articles describing how to setup GMail as a relayhost in Postfix mail server. Most of them involve creating local CA certificate and generation of client certificate. There is absolutely no need to! Just think, how GMail would be able to validate your own certificate created by your own CA available only on [...]

My task was to migrate database from Mambo 4.5.1 to newest Joomla version which is now 1.6. I didn’t have to migrate any additional components data, just core functionality. At first I thought I will be an easy task, but then a few difficulties showed. Below I provide step which took me to happy end.

My BSc Thesis is to implement steganography algorithm that use VoIP packets as a transport. The main aim is to modify delay of RTP packets without noticeable impact on transmission quality. I create hidden channel by sending two packets that average delay is 20ms. For example if we send 1 packet 10ms after previous and [...]