“One of the most common encryption ciphers used in the world and the one macOS relies on the most — whether it’s FileVault, creating an encrypted disk image, or password protecting an iWork document — is Advanced Encryption Standard (AES),” Vrijenhoek writes. “AES is a solid cipher and can be used with 128-bit or 256-bit keys. They are both very good, and if a strong password is used the likelihood of it being cracked are very slim.”
“On everything macOS uses AES encryption, it defaults to 128-bit,” Vrijenhoek writes. “So you may be asking, why is 256-bit an option in Disk Utility? Most likely it’s there because government requires 256-bit AES encryption for ‘TOP SECRET’ files, and if the government requires it, others may as well, so Apple gives them the option to avoid complaints. For everyone else, 128-bit is more than enough to secure data… Any Mac since 2010 should be able to handle FileVault just fine without impacting performance. It’s built-in, it’s free and an excellent way to protect your data—using FileVault encryption is strongly recommended!”
Read more in the full article here.
MacDailyNews Take: 128-bit ought to be enough for anybody. 😉
Securing your Mac’s SSD before handing it off for repair – June 28, 2016
Why a strong password doesn’t help as much as a unique one – July 22, 2015