Explain why master key is 4096 bits
Signed-off-by: Konstantin Ryabitsev <konstantin@linuxfoundation.org>
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@ -221,9 +221,11 @@ from other PGP users you come across.
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If you are using Linux, you should already have GnuPG installed. On a Mac,
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you should install [GPG-Suite](https://gpgtools.org) or you can use `brew
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install gnupg2`. On a Windows PC, you should install [GPG4Win](https://www.gpg4win.org).
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For all other platforms, you'll need to do your own research
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to find the correct places to download and install GnuPG.
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install gnupg2`. On a Windows PC, you should install
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[GPG4Win](https://www.gpg4win.org), and you will probably need to adjust some
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of the commands in the guide to work for you, unless you have a unix-like
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environment set up. For all other platforms, you'll need to do your own
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research to find the correct places to download and install GnuPG.
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##### GnuPG 1 vs. 2
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@ -334,6 +336,13 @@ possible to start using ED25519 keys right now, it is likely that you will
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come across tools and hardware devices that will not be able to handle them
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correctly.
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You may also wonder why the master key is 4096-bit, if later in the guide we
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state that 2048-bit keys should be good enough for the lifetime of RSA public
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key cryptography. The reasons are mostly social and not technical: master keys
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happen to be the most visible ones on the keychain, and some of the developers
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you interact with will inevitably judge you negatively if your master key has
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fewer bits than theirs.
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#### Generate the master key
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To generate your new master key, issue the following command, putting in the
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