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A comment on Determining the Average Apple Device Lifespan. Parent comment

Re:Determining the Average Apple Device Lifespan by astrodust on Thursday March 01, 2018 @10:17PM (#16498704)
2010 iMac, 2012 Mac Mini, 2013 iPhone 5S. All of them are running the latest version of the OS without problems.

The only problem with the two computers was a lack of SSD but a kit from OWC fixed that for both of them.

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Re:Determining the Average Apple Device Lifespan by thisacctforreal on Thursday March 01, 2018 @11:07PM (#16498918)
iPhone 5Ss are great to keep around, you can generate an ECC private key inside the secure enclave (albeit only using the NIST P256 curve). Using Krypton[0] or your own software you can use the phone as a hardware private key.

Krypton includes support for SSH, gpg signed git commits, and soon generic gpg signing[1], all backed by TouchID or your passphrase[2]. Make sure to setup Krypton with the "Nist P256 (Secure Enclave)" curve. Private keys generated in the Secure Enclave are only possible to extract using a zero-day in the Secure Enclave coprocessor.

[0] https://krypt.co [1] https://github.com/kryptco/krypton-ios/pull/95

[2] Protip: iOS passphrases consisting of only digits will use a keypad on the unlock screen.

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