Mr Solnik says it will take hardware changes to prevent FBiOS from working against future iPhone models. Can't patchhttps://twitter.com/msolnik/status/701638682638315521 …
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Replying to @riskybusiness
@riskybusiness@msolnik not true, they could change PBKDF iterations in software and slow down brute force attempts easily w/ sw update1 reply 0 retweets 0 likes -
Replying to @dguido
@dguido@riskybusiness how does that fix the ability to upload a signed ramdisk/SEP firmware disabling the limiting?1 reply 0 retweets 1 like -
Replying to @msolnik
@msolnik@riskybusiness it doesn't, but those protections would not matter as much if it took whole seconds per passcode attempt.2 replies 0 retweets 0 likes -
Replying to @dguido
@dguido@riskybusiness and the only way to limit it to whole second would be with a hardware change. Hardware allows fast input now...2 replies 0 retweets 1 like
@msolnik @riskybusiness I thought iteration count was controlled in sw? It's variable based on measured CPU speed.
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