If you want to protect files so that they can transverse across cyberspace safely, or you just want to protect them from
prying eyes with a password.
use the gpg command.
gpg -c filename
You will be asked for a pass phrase.
enter your pass phrase.
You will be asked to repeat your pass phrase
a file will be created with the .gpg extention
Caution: if you forget your pass phrase you will not be able to recover your file. the encryption used is that good.
to decrypt the file simply type
gpg filename.gpg
enter your pass phrase when asked.
To do multiple files I usually zip them into one zip file and then encrypt the zip file.
you can do this in one shot by typing the following
zip - file1 file2 file3 file4 file5 | gpg -eat > outfile.zip.asc
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