Wiki » History » Version 16
Karsten, 08/21/2020 09:10 AM
| 1 | 8 | Karsten | h3. Overview |
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| 2 | 1 | Sascha | |
| 3 | 14 | Karsten | This open source software allows the 'cracking' of A5/1 keys used to encrypt GSM 2G calls and SMS. |
| 4 | The cracking utility Kraken, developed by Frank A. Stevenson, is written in C++/python and runs on AMD GPUs or CPUs. |
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| 5 | Kraken leverages rainbow tables that were computed as a community effort. |
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| 6 | 1 | Sascha | |
| 7 | h3. Mailing list |
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| 9 | 8 | Karsten | A public mailing list for announcements and discussion can be found "here":http://lists.srlabs.de/cgi-bin/mailman/listinfo/a51 . |
| 10 | 14 | Karsten | You may also file bugs and support requests through the "issue tracker":http://opensource.srlabs.de/projects/a51-decrypt/issues/new if they are of little relevance to the majority of the mailing list subscribers. |
| 11 | 1 | Sascha | |
| 12 | 8 | Karsten | h3. Code |
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| 14 | The (read only) Kraken git can be fetched with |
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| 16 | 1 | Sascha | <pre> |
| 17 | git clone git://git.srlabs.de/kraken |
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| 18 | </pre> |
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| 19 | 14 | Karsten | |
| 20 | h3. Rainbow tables |
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| 22 | 16 | Karsten | "Decryption is achieved with rainbow tables":https://srlabs.de/bites/decrypting-gsm/ , which can be downloaded through "BitTorrent":https://opensource.srlabs.de/projects/a51-decrypt/files |
| 23 | 8 | Karsten | |
| 24 | h3. Related projects |
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| 26 | 9 | Karsten | The A5/1 decryption was originally meant to be used with "Airprobe":http://airprobe.org), which allows interfacing with the radio waves with |
| 27 | 13 | Karsten | the help of gnuradio. |
| 28 | 8 | Karsten | |
| 29 | Airprobe has, for most users, since been replaced by the cheaper "Osmocom phones":http://bb.osmocom.org |
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| 31 | 15 | Karsten | h3. [[A51|Further reading on A5/1 Cryptoanalysis]] |