-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA512
Please all find my new PGP key attached below. Replace the old key and use this with immediate effect.
New Key Fingerprint: 5A48F5D050E9905262B4799DCCB238E47CFEDFBC
-----BEGIN PGP SIGNATURE-----
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=vfUM
-----END PGP SIGNATURE-----
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=tv2s
-----END PGP PUBLIC KEY BLOCK-----
What you need to do is to sign your new key with your old key. The command
to do this is as follows:
You just need to enter Command Mode and enter the following commands from
the prompt.
gpg --default-key <Old Key> --sign-key <New Key>
pub 4096R/30D3EB73 2013-10-07
uid [ unknown] Dread Pirate Roberts
sub 4096R/28820345 2013-10-07
pub 4096R/7CFEDFBC 2013-12-19 [expires: 2014-12-31]
uid [ unknown] Dread Pirate Roberts <silkroad6ownowfk.onion>
sub 4096R/F6F90F3C 2013-12-19 [expires: 2014-12-31]
Given that the above are your keys, the command you would use is as follows:
gpg --default-key 0x30D3EB73 --sign-key 0x7CFEDFBC
You will be prompted for your passphrase, and confirmation before the
signing operation is completed.
For most intents and purposes, generating an entirely new key is overkill.
This usually leads, as you may have already seen, to a multitude of
questions about why you did this.
I'm not entirely certain what your motivation was to generate a new PGP key,
however, if your goal was to prevent the potential future decryption of
already-existing message traffic, generating a new key is not necessary --
all that is necessary is to generate a new encryption sub-key, and expire
the old sub-key. Finally, you need to delete the private half of the now-
deprecated encryption sub-key, and ensure that all backups of that sub-key
are also destroyed.
One of the advantages of doing that is that you don't need to throw-out the
baby with the bathwater -- you can still keep the signing half of the key,
that you used to sign messages with, only the sub-key used to encrypt
messages will be changed.
If you expire, and later delete the private half of the encryption sub-key,
then there are NO circumstances under which you can be compelled to decrypt
traffic encrypted using that sub-key. The only way for anyone to access
such traffic would be to:
1) Find a copy of the private half of that sub-key backed-up and stashed
away somewhere; or
2) The Feds would have to factor your 4096-bit PGP encryption sub-key. This
is considered infeasible at the current time, ever for such large, well-
funded entities as governments.
I'll get into the topic of forward secrecy in another post, as I'm feeling
under the weather right now, and need to lie down.
Nightcrawler
4096R/BBF7433B 2012-09-22 Nightcrawler <Nightcrawler@SR>
PGP Key Fingerprint = D870 C6AC CC6E 46B0 E0C7 3955 B8F1 D88E BBF7 433B
Security is a bit like religion... some things have to be taken on faith.
Where security differs from religion is that security is NOT retroactive.
Unlike Christianity, where you can come to Jesus, be 'saved' and have all
your sins washed away, with security you can adopt Tails or PGP, and be
secure from that point forward, but rest assured that your previous sins
(security failings) WILL come back to haunt you and bite you in the ass.
The original DPR is the poster child for that, right now.
Folly, thou conquerest, and I must yield!
Against stupidity the very gods Themselves
contend in vain. --Friedrich Schiller