Farook’s iPhone

Are you confused by the FBI vs Apple dispute regarding Syed Farook’s iPhone? I am.

In an excellent article published today, Cnet neatly summarized the delicate position in which Apple finds itself, following the issuance of a court order that compels Apple to help authorities unlock the iPhone 5c that was used by Islamic terrorist and mass murderer Syed Farook.

The nugget that surprises me is that the FBI appears to be preparing a brute force attack on this iPhone’s 256-bit AES encryption. This is a daunting task. To brute-force attack encrypted data that’s encrypted with AES-256, you need to try each of 2256 or 116,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000, 000,000,000,000,000,000 possibilities.  That’s more than the number of atoms in the universe.

If Farook chose a strong passphrase, it could require thousands of years for most computers to decrypt his data. It appears that the FBI has serious horsepower to throw at this task.

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