ECDSA smartphone key extraction using $2 magnetic probe

Re:ECDSA smartphone key extraction using $2 magnetic probe by nly on Friday March 25, 2016 @07:48AM (#11359532)

Not specifically. ECDSA is a signing algorithm. Unless there's some really fancy asymmetric authentication protocol between components within the phone, which perform curve operations, it's most unlikely. Of course, there's no saying a hardware side-channel isn't a possible attack vector.

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Re:ECDSA smartphone key extraction using $2 magnetic probe by TickleSteve on Friday March 25, 2016 @08:50AM (#11359718)

There is a dedicated authentication coprocessor, to which the communications will be authenticated, so yes.

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Re:ECDSA smartphone key extraction using $2 magnetic probe by ctz on Friday March 25, 2016 @10:39AM (#11360285)

The thing you're talking about ("secure enclave") is not present in the phone the FBI are trying to attack.

Also, the Secure Enclave co-processor is on-die, so there will be no need to authenticate or encrypt communications with it.

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