Re:Apple Is Said to Be Working on an iPhone Even It Can’t Hack
by ikeboy on Wednesday February 24, 2016 @07:43PM
(#11171535)
Short answer: yes.
Longer answer: There's a key that encrypts the actual data, and that key is stored on disk, but encrypted with your passcode along with a hardware key. The hardware key cannot be read, only used to decrypt. Changing your code just changes the key stored to disk, but not the encryption key, so it's quick, but preserves security.
Longer answer: There's a key that encrypts the actual data, and that key is stored on disk, but encrypted with your passcode along with a hardware key. The hardware key cannot be read, only used to decrypt. Changing your code just changes the key stored to disk, but not the encryption key, so it's quick, but preserves security.
Longest and most accurate answer: https://www.apple.com/business/docs/iOS_Security_Guide.pdf from page 10.