New answers tagged encryption
PGP and PKI are two somehow similar but differently working cryptographical schemes (PGP/GPG vs. PKI). Keychain Access doesn't provide PGP support. Instead you have to download GPG Suite 2015.08 which contains its own GPGKeychain.app. Here you will find a tutorial how to work with it.
I think you're trying to mix two different encryption schemes here: S/MIME and PGP. Mail.app supports S/MIME by default, so I guess that's what you're currently using. PGP support can be added by installing the Mail plugin that is part of the GPG Suite. After you also generate a PGP key for yourself, you can use both S/MIME and PGP encryption. You can ...
I assume you're backing up to a directly attached drive (USB drive or something similar)? When you select a local drive for encrypted backups, it converts the entire drive (or at least the volume you selected) to encrypted format, then starts backing up your data into it. Basically, it's encrypting the current contents (probably most blank, but it encrypts ...
if you encrypt something once, you can't weaken it through encrypting it another time. you can strengthen it, but not that much that I makes a big difference. most attacks are brute force password Crack attacks, on both filevault and the disk image, because there is the highest chance for the decrypter to win. so you harden the step of decryption because you ...
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