baseband-devel July 2022

baseband-devel@lists.osmocom.org

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Engagetted !
by Sébastien Lorquet 14 Oct '25

14 Oct '25

http://www.engadget.com/2010/12/29/researchers-eavesdrop-on-encrypted-gsm-c… Congrats!

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Re: New attack ?
by Mychaela Falconia 06 Jun '23

06 Jun '23

Bastien Baranoff wrote: > Hello all, the attack : you generate the rainbow tables for each possibles ki > with a given rand set, send this rand (which is not random ;) the phone > respond with sres you make the operation for 3 or 4 rand and meaningly > decrease the possibility of ki. Do you think it is realisable ? Someone please correct me if I'm wrong on this detail, but it is my understanding that no mainstream commercial operator today (outside of personal enthusiast tinkerers in Osmocom and similar communities) issues native 2G SIM cards any more - instead all of their current SIM cards are actually USIM/ISIM, and if GSM 11.11 SIM operation is supported at all, it is only provided as a backward compatibility mode. I reason that these "modern" SIMs must be using Milenage in their native 3G/4G mode, thus their secret key material is not classic Ki, but K/Ki (128 bits) plus OPc (another 128 bits), for a total of 256 bits of secret key material. What happens when these "modern" SIMs are accessed via GSM 11.11 SIM protocol, or when 2G authentication is requested in a USIM session? I find it doubtful that they switch to COMP128 (any version) in this mode, instead I reason that they use 2G mode of Milenage, which still uses both K/Ki and OPc - thus the secret key material used even for 2G Kc and SRES generation from RAND is still 256 bits rather than 128. Again, someone please correct me if my reasoning is wrong here. M~

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About 3g5 hardware
by Bastien Baranoff 07 Aug '22

07 Aug '22

Hello @osmocom i wonder something. I have bought IP. accès NANO 3 G S8 Modèle # 237BA UMTS Band 2/5 (800 Mhz) will i have a chance to make it work with accelerate 3g5 software thanks, Bastien Baranoff

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sylvainburst_ind
by abrahamt 10 Jul '22

10 Jul '22

mailto:baseband-devel@lists.osmocom.org Hello everybody! I built osmocombb main branch many times without problem. I downloaded sylvain_ind branch prebuilt vm because has no success to buiding. My error is: make[1]: Entering directory '/home/user/osmocom-bb-sylvain-burst_ind/src/target/firmware' make[1]: *** No rule to make target 'include/tiffs.h', needed by 'board/compal_e88/init.o'. Stop. But even prebuilt VM dosent show BURST_IND when start ccch_scan. I have feeling that everything is firmware problem. Can somebody send me a link with prebult sylvain_ind firmware or even better link oo some upload service with prebuilt VM? I will be very thankfull and i am willing to pay for that and some explanation via chat or email. Thank you very much! Kind regards!

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baseband-devel July 2022