[Cryptography] Is Apple correct?

Jerry Leichter leichter at lrw.com
Fri Feb 19 17:07:17 EST 2016


> Isn't the IMEI in stored on the phone's SIM card? That was my impression.
> 
Oh, and BTW, the serial number portion of an IMEI is only 6 decimal digits long. The rest of the IMEI identifies maker and model, possibly a software version number, and a checksum.  Those parts are easily determined in typical attack scenarios.  Not to mention that IMEI's aren't treated as particularly confidential anyway.

Basing anything cryptographic on the IMEI would be a really bad idea.

                                                        -- Jerry

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