If during your apt activity you are getting some errors like this:
W: GPG error: http://ftp.us.debian.org etch Release: The following signatures couldn’t be verified because the public key is not available: NO_PUBKEY 9AA38DCD55BE302B
Try to add the key from keyserver specifying the key id and you should be ok
~# gpg –keyserver pgpkeys.mit.edu –recv-key 9AA38DCD55BE302B
~# gpg -a –export 9AA38DCD55BE302B [...]
In the need for a quick pipeline to encrypt and decrypt data, gpg can be quite handy, for example it can be used in this way to encrypt some backup before transferring it to a third part hosted storage:
cat backupfile.tgz | gpg -c –cipher-algo=BLOWFISH > backupfile.tgz.gpg
(you’ll be asked for the Passphrase to use for encryption)
and [...]
Continue reading about Quick data pipeline for encryption and decryption
