Hacker Decrypts Apple's Secure Enclave Processor (SEP) Firmware

Hacker Decrypts Apple's Secure Enclave Processor (SEP) Firmware

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Hacker xerub has posted the decryption key for Apple's Secure Enclave Processor (SEP) firmware.

The security coprocessor was introduced alongside the iPhone 5s and Touch ID. It performs secure services for the rest of the SOC and prevents the main processor from getting direct access to sensitive data. It runs its own operating system (SEPOS) which includes a kernel, drivers, services, and applications.

The Secure Enclave is responsible for processing fingerprint data from the Touch ID sensor, determining if there is a match against registered fingerprints, and then enabling access or purchases on behalf of the user. Communication between the processor and the Touch ID sensor takes place over a serial peripheral interface bus. The processor forwards the data to the Secure Enclave but can’t read it. It’s encrypted and authenticated with a session key that is negotiated using the device’s shared key that is provisioned for the Touch ID sensor and the Secure Enclave. The session key exchange uses AES key wrapping with both sides providing a random key that establishes the session key and uses AES-CCM transport encryption

Today, xerub announced the decryption key 'is fully grown'. You can use img4lib to decrypt the firmware and xerub's SEP firmware split tool to process.

Decryption of the SEP Firmware will make it easier for hackers and security researchers to comb through the SEP for vulnerabilities.

You can find the decryption key at the link below. Please follow iClarified on Twitter, Facebook, Google+, or RSS for updates.

Read More [via @xerub]


Hacker Decrypts Apple's Secure Enclave Processor (SEP) Firmware
Me - August 20, 2017 at 12:23am
Who give a fuuuccvvkkkI want a jailbreak for iOS 11,
D4xM4Nx - August 18, 2017 at 6:39am
No biggie with this finding and public release, an update can and will close the hole. Apple Pay is a huge deal for everyone involved, the SEP has to stay impenetrable. In my opinion, the SEP should've never been touched since there's already access to the NFC chip, it's doable tho.
Raas Al Ghul - August 18, 2017 at 5:00am
Most of the comments you seem to be from people that do not understand what has been published yes Apple Pride themselves on security and compare to many other companies such as Samsung products Touch ID and the processor used to process the information related to it has been out for around four years and this is the first time something like this has been published that’s pretty good Apple can easily patch this via the update
Raas Al Ghul - August 18, 2017 at 5:12am
Imagine the Secure Enclave as a vault. Apple hung a big, dark curtain over it to prevent anyone from even seeing the vault. Now, that curtain has been opened and people can see the vault. The vault, however, is still locked as securely as ever. No one has broken into it and no one has even gotten any closer to breaking into it.
Why? - August 17, 2017 at 5:54pm
And what is the purpose of this guy publishing the key? Does it help consumers/users in any way, or was it a total dick move?
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