Posted Jan 8, 2010 13:42 UTC (Fri) by anton
In reply to: UMTS
Parent article: GSM encryption crack made public
With a well-designed protocol the content is encrypted end-to-end and the provider does not need (and ideally should not be able to) decrypt it. So the provider only needs to decrypt some meta-data, which is not that much. Also, AFAIK AES is designed (and was selected) to be cheap to encrypt and decrypt. The chances that the UMTS designers found something significantly cheaper that's as secure are very small.
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