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I am familiar with A5/2, but what is A5/3 encryption ? I assume there should be no impact on RAN Engg with this….(?)
RK
Please explain about A5/2 encyyption
A5/3 is the new standard for cyphering in mobile communication… it should be implemented in GSM pretty soon !
have a look there for more technical details :
en.wikipedia.org/wiki/KASUMI_(block_cipher)
thanks a lot pix
It is already supported on Siemens BSS.
Which Siemens release supports A5/3 ? can you confirm, please.
Thanks,
RK
Is it possible to decode mobile number if both end bluetooth is on???
Siemens supports A5/3 starting from BR9.0 SW release.
Since the ciphering algorithm A5/2 encryption is weaker (encryption security) compared to A5/1. Would there be any other reason for an operator to use the ciphering algorithm A5/2 only on their BSSAP end, but A5/1 on MSC PLMN?
Zehan,
As far as i know, no.. this is a security breach.
… or perhaps there is another operator using A5/2, and therefore they are also using A5/2 in order to avoid intra PLMN HO failure ? 5change of ciphering during a HO is certainly a little bit complicated…)
