That's good info, but the device in question is an iPhone 5C. The 5C uses the A6 SoC, which has no secure enclave. I'm not 100% sure what security features it d

That's good info, but the device in question is an iPhone 5C. The 5C uses the A6 SoC, which has no secure enclave. I'm not 100% sure what security features it does have, but it sounds as if Apple could load a custom version of iOS that lacks the erasure feature. Even then, decryption is not certain. Files are encrypted with a combination of the passcode and the SoC's unique key.[1] That means unlock attempts have to be done on the phone hardware. If you imaged the device for parallel cracking, you'd need to figure out the 256-bit AES key in addition to the passcode. Still, a 4-digit PIN would certainly be broken. An 8-digit PIN would probably take months to crack (100ms * 10^8 == 116 days). An actual passphrase? Good luck. 1. See the Encryption and Data Protection section of Apple's 2014 iOS security guide, starting on page 9 of https://s3.amazonaws.com/s3.documentcloud.org/documents/1302613/ios-security-guide-sept-2014.pdf https://s3.amazonaws.com/s3.documentcloud.org/documents/1302...