This Bachelor's thesis focuses on the testing of the outputs of smart cards random number generators. The theoretical section of the thesis covers the problematics of random numbers generating and its testing, as well as descriptions of several types of programmable smart cards. The thesis compares various tools for testing the quality of randomnes and describes the changes in the Python implementation of the testing suite NIST STS. The thesis includes description of the created application for the automatic testing of the number generated by JavaCard and BasicCard cards. This application was used for the testing of 7 cards for this thesis. The testing revealed that the tested generators do not generate perfectly random sequences, but their...