{"guid":"import-3db2bb3d91071a3717","title":"Swedish analysis of Nazi crypto TTYs","subtitle":"How Beurling et al. broke the Siemens \u0026 Halske T52 crypto teleprinter","slug":"cccamp07-en-2073-Swedish_analysis_of_Nazi_crypto_TTYs","link":"http://events.ccc.de/camp/2007/Fahrplan/events/2073.en.html","description":"This talk will describe how a team of Swedish cryptanalysts broke the electromechanical cryptographic teleprinter \"Siemens \u0026 Halske T52\" which was used by the Germans during World War II for \"important\" traffic. It contained a stream cipher implementation much more sophisticated than the substitution engine of the well-known Enigma. The talk will focus on reconstructing how the Swedes, specifically the key figure of Arne Beurling, could have gotten the ideas for breaking the cipher -- a process about which next to no historical accounts exist.\n","original_language":"eng","persons":["Sven Moritz Hallberg"],"tags":["camp2007"," Science"],"view_count":177,"promoted":false,"date":"2007-08-11T02:00:00.000+02:00","release_date":"2009-09-28T02:00:00.000+02:00","updated_at":"2026-03-29T15:00:06.245+02:00","length":3252,"duration":3252,"thumb_url":"https://static.media.ccc.de/media/conferences/camp2007/cccamp07-en-2073-Swedish_analysis_of_Nazi_crypto_TTYs.jpg","poster_url":"https://static.media.ccc.de/media/conferences/camp2007/cccamp07-en-2073-Swedish_analysis_of_Nazi_crypto_TTYs_preview.jpg","timeline_url":"https://static.media.ccc.de/media/conferences/camp2007/import-3db2bb3d91071a3717-timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/conferences/camp2007/import-3db2bb3d91071a3717-thumbnails.vtt","frontend_link":"https://media.ccc.de/v/cccamp07-en-2073-Swedish_analysis_of_Nazi_crypto_TTYs","url":"https://api.media.ccc.de/public/events/import-3db2bb3d91071a3717","conference_title":"Chaos Communication Camp 2007","conference_url":"https://api.media.ccc.de/public/conferences/camp2007","related":[{"event_id":83,"event_guid":"import-c15e62840cf593cf18","weight":2},{"event_id":93,"event_guid":"import-cadcd1a1d078b2012c","weight":1},{"event_id":106,"event_guid":"import-c6b33fcb2523d7b8e4","weight":1},{"event_id":112,"event_guid":"import-e17ac3732113f6cf20","weight":1},{"event_id":118,"event_guid":"import-1f4121511842b31d10","weight":1},{"event_id":120,"event_guid":"import-03e8559233b739dbdc","weight":1},{"event_id":1005,"event_guid":"import-497b8fb8715bf2cdd6","weight":2},{"event_id":2733,"event_guid":"a990a339-b544-47e7-a5d6-1f2650d18e2a","weight":1},{"event_id":2980,"event_guid":"c2724e07-7ce6-41ba-b88b-00bbe950e98b","weight":1},{"event_id":3054,"event_guid":"896d8375-9d7e-4c1a-a079-7145bd4cd1d8","weight":2},{"event_id":3287,"event_guid":"7bfcb76f-effd-5342-a13a-aa45535f8666","weight":1},{"event_id":3671,"event_guid":"4ef69e6a-026f-4b30-888d-af654b220a3d","weight":1},{"event_id":3717,"event_guid":"07a731a0-2c3a-40f1-928e-3f709eb1eccf","weight":1}],"recordings":[{"size":87,"length":3252,"mime_type":"video/mp4","language":"eng","filename":"cccamp07-en-2073-Swedish_analysis_of_Nazi_crypto_TTYs.m4v","state":"downloaded","folder":"video/m4v","high_quality":true,"width":640,"height":480,"updated_at":"2016-01-27T11:02:39.107+01:00","recording_url":"https://cdn.media.ccc.de/events/camp2007/video/m4v/cccamp07-en-2073-Swedish_analysis_of_Nazi_crypto_TTYs.m4v","url":"https://api.media.ccc.de/public/recordings/34","event_url":"https://api.media.ccc.de/public/events/import-3db2bb3d91071a3717","conference_url":"https://api.media.ccc.de/public/conferences/camp2007"}]}