The A5/1 encryption algorithm used in (traditional) GSM networks were proven to be breakable by brute force back in 2009/2010. This means that GSM calls can be intercepted, decoded and listened to by anyone. (SMS also, but that is a different story)
To do this easily you need a 1600 GB big rainbow table.
These files are/were available on bittorrent; a mirror of the torrents is available. The original source on reflextor.com is unavailable.
I’m offering the files for sale on disk or as paid download.
The intent with this is to facilitate further research and experimentation. Drop me an email and we’ll figure out the details.
Updated 2013-10-23: Clarified language.
Update 2016-05-10: Too much hassle shipping disk drives from outside the EU. From this point on I’m offering access to the files on FTP only.
Blog of Lasse Karstensen 
Hey Lasse,
Cool blog, has been reading for a while, let me know if you’re still selling the RTs, I’ll happily pay you for them, downloading is sooooooo slow in Australia,
Let me know!
Lance
Hi Lance.
Sure, we can work something out. Lets continue this on email.
Hey Lasse,
I know this is kinda old, but are you still offering this?
Hi Matt.
Sure, I’m still offering this. Let me email you the details.
I am interested in the tables as well as the radio. How do we arrange the details?
Hi Rf. Let’s take this over email.
Hi Lasse
Can you sent me a list of the hardware that you have and prices?
Thanks
Greetings
Incendiari0
Hi Lasse,
I am interested in purchasing the files on a disk. I also have a question which I’ll address in email.
Thanks,
Troy
Is it not true that many GSM carriers now employ frequency hopping which makes the prior methods of capturing GSM calls obsolete?
Hi,
Due to b/w restrictions and speed in South Africa it would take me about 115 days to get the tables, are you still selling them? I’d love to get a copy!
-AM
Hi Andrew. Sure, I’m still selling these. Let us sort out the details on email. -Lasse
Kindly let me know the price and method for paying
Hi. I sent you the details on email just now.
I would to purchase the files on a disk. Please email me the details.
Hi DP. Thanks for making contact, I’ve sent you an email with the details. -Lasse
Hi, I’m interested in buying a direct download if possible. Please let me know the details.
Regards,
Can you contact me ?
thanks
Hi Lasse, do you still have the rt? If so can you email me the details? Thanks.
Hi Lasse, I am interested in buying the Disk with the tables. Kindly, thank you in advance.
Hi,
Is this still active blog? Cheers.
Yup. :-)
Hi Lasse,
I have a few questions:
1. http://hyse.org/a51torrents/ – it’s all tables? or do you have more?
2. Why such a weird tables numbering?
3. Which cover (from 2^64) the tables?
Thanks in advance
Hi Beshoy.
This is the Berlin file set you get from Bittorrent.
Check out the a51 email list for more information.
I am too interested in buying the disk …thank you
Hi Lasse, I’m interested in buying the rainbow tables, could you please let me know the details by email? thanks
Hi Andy. Check your email. :-)
Hi Lasse, I am interested to buy the RTs and tables. could you please let me know the details by email? thanks
Hi, also interested in purchasing a set of the tables on disk, based in the UK btw. Cheers!
Hi Lasse,
I’m interested in purchasing the set of tables. Let’s discuss it over email.
Hi Lasse, it’s all tables? or do you have more?
Hi Edgaras.
This is the 40 .dlt files you can get over bittorrent. (“Berlin set”)
I’m not familiar with any recent efforts in expanding it further. (better hitrate)
-Lasse
Hi, also interested in purchasing a set of the tables on disk, based in the FR.
Thank’s
Hi TLK. Check your email. -lk
Hi Lasse,
I’d love to have a copy. Please send my an email with the details.
Best regards
Hi SirNick. Check your email :) -lk
Hi Lasse,
I’m interested in RTs too. Can I have them in some way?
Hi Yuri.
Let me send you the details on email.
-Lasse
Hei,
Could you contact me about the tables?
Thanks :)
Sure, check your email.
-Lasse
I’m also interested in a disk version of the tables, can you drop me a line?
Hi! Check your email :-) -Lasse
Hi Lasse,
I am interested in the disk version of the RTs. Are the RTs only the A51 or does it include the other RTs such as NTLM/SHA1/etc?
Thanks in advance!
Nick
Hi Nick.
The tables are for A5/1 only. I’ll send you a followup email with the details.
Hey Lasse
Do you still have this RT available for direct download?
Thanks in advance
Hi.
Yes, I still have this operational. I’ll email you the details.
Hi, I am interested also in a set of the tables on disk, can you mail me the details also, thanks.
Looking for direct download,
Thanks in advance
Hi! Emailed you the details. -Lasse
Hi,
I’m interested in your tables on disk, but have no idea how much would it cost, can you kindly email me how much is the estimates for this,
How much is the paid download also?
Looking forward for your reply.
Thank you
Hi Darkman. I’ll email you the details. -Lasse
hi, i would like to pay for download if possible, please drop me an email with the steps, thanks.
Hey, I’m interested in the tables on disk.
Hi, I would like to pay for a download. Pls drop me a mail.
Hi,
I’m interested in the disk or download. Please send me an email.
Thanks,
Andrew
Hi Andrew. Check your email for details. -Lasse
Hi lasse,
I’m interested in a download – if you could email me that would be great.
Thanks,
Jamie
Hi Jamie. Check your email. -Lasse
Hi. Interested in the download. Please let me know how.
Hi. Check your email for details. -Lasse
hi not yet there. can you try again? checked all other folders.
Hi, I’m interested in the download as well. Thanks!
Sure! Details sent on email just now. -Lasse
Hi, I’m interested in the download as well. Thanks!
Sure thing, details sent on email now. -Lasse
Hello, what’s the price for the ftp access ? is there a demo access to test speed ? (at least 1 table)
Thank you
Hi. I’ll send you the details on email, and yes of course you can test the FTP speed before buying.