Computational Cryptography 2020-21 - Tuesday-03 Νοε 2020
https://centralntua.webex.com/recordingservice/sites/centralntua/recording/playback/71ec0fba73a141f0b4f5d798d0e9285a

Computational Cryptography 2020-21 - Friday-06 Νοε 2020
https://centralntua.webex.com/recordingservice/sites/centralntua/recording/playback/ef4cb0c25b1d4b2db5ef031a601af280

Computational Cryptography 2020-21 - Tuesday-10 Νοε 2020
https://centralntua.webex.com/recordingservice/sites/centralntua/recording/playback/3772a8541352404290389a0575f1267a