An overview of GPG
GPG stands for Gnu Privacy Guard. It is a program from the FSF which allows you to encrypt and verify signed files created by others all without a shared secret which would allow others to impersonate you or get access to your encrypted files.
The purpose of encryption is to make something readable only to a select individual or group. The simplest ways of doing this are "codes" which basically mean that parts (possibly all of it in total) are transposed with other unique items.
By T. W. Zellers at IP-Wars.
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