How do SIM Cards work?

[thinking_guy]

 

[Sry.com]

Bumpz

 

[Kasun0]

learned something new, thanks

 

[EdNygma]

Thanks for Sharing.

 

[SimonRiley]

tfs ++ bump

 

[EvilEye]

bp

 

[asylum]

bump.

 

[sirajstc]

thx

 

[ACHIK]

Bump.

 

[imhotep]

Reminds me of the Gemalto affair. Gemalto was one of the largest sim card suppliers. Mobile phones and also credit cards and for e-Passports.
NSa & GCHQ remotely hacked Gemalto and stole the encryption keys for a massive number of SIM cards.
This enabled the NSA & GCHQ to access a number of phones all over the world, encrypted or not.
When the SIM is manufactured, an encryption key Ki is in the chip, and this Ki gets passed on to the telecom carrier network to authenticate the identity. To intercept the communications one has to know the Ki - and this is what the NSA did - steal Ki.

 

[sirajstc]

Reminds me of the Gemalto affair. Gemalto was one of the largest sim card suppliers. Mobile phones and also credit cards and for e-Passports.
NSa & GCHQ remotely hacked Gemalto and stole the encryption keys for a massive number of SIM cards.
This enabled the NSA & GCHQ to access a number of phones all over the world, encrypted or not.
When the SIM is manufactured, an encryption key Ki is in the chip, and this Ki gets passed on to the telecom carrier network to authenticate the identity. To intercept the communications one has to know the Ki - and this is what the NSA did - steal Ki.