As I am using an old (10-15 years) SIM-card, I was asking myself if the hardware and software on the sim-card is equivalent to the newer sim-cards.

Are the old-sim-cards (10-15years) the same as the new ones ?

Are usim-cards already in use ?

As Example the encryption, how to know if my card supports A5/1 or A5/3 ?

• A stream cipher known as the A5 algorithm.

– A5/0: no encryption.

– A5/1: original A5 algorithm used in Europe.

– A5/2: weaker encryption algorithm created for export, in

– A5/3: strong encryption algorithm created as part of the 3rd Generation Partnership Project (3GPP)

Does some People (scriptkiddies-criminals...) be able to these Threats ?

Threats to SIM Data

• GSM SIMs can be cloned because authentication protocol has flaw

–COMP128 is popular algorithm and a published standard

• Leaks information at every connect attempt.

• Chosen-plaintext attack

–Approximately 150,000 queries required takes about 8-11 hours with a suitable smart card reader

From here

  • usim have been in use for about the last 15 years. – Marcus Müller Jan 6 '17 at 21:20
  • and yes, it's easy to decrypt a5/1 and it has been publicly demonstrated – Marcus Müller Jan 6 '17 at 21:21
  • The provider didn't ask to get a new one. How to know if it's a usim, it is printed in front, because they seem outside the same ? Thanks – Tech-IO Jan 6 '17 at 21:36
  • usim is one of the kind of softwares that can run on the card; you're mixing up terminology. If you can use it to connect to 3G, it contains USIM capabilities. – Marcus Müller Jan 6 '17 at 21:40
  • Means, if the hardware of my old sim was able to update it to usim or it was already. I never used it with Internet over mobile (3G). I use just a normal last generation nokia mobilephone. Maybe there are some codes to call to test it or in short I just ask for a new one. – Tech-IO Jan 6 '17 at 21:51

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