Please see this link[1], Apple explains exactly how keys are stored in their datacenters (Hint: it is not in clear text). They use HSM's which destroy the user

Please see this link[1], Apple explains exactly how keys are stored in their datacenters (Hint: it is not in clear text). They use HSM's which destroy the user's key after 10 failed attempts. [1]: https://www.apple.com/business/docs/iOS_Security_Guide.pdf https://www.apple.com/business/docs/iOS_Security_Guide.pdf