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PGP/GPG is a form of asymmetric encryption that makes use of two different encryption keys called your public key and your private key. The public key is intended to be shared; you advertise your public key, and individuals or organizations wishing to contact you use your public key to encrypt a message. Messages encrypted to your public key can only be decrypted by the private key; therefore, it is important that your private key stays private, and that no one outside of your team or organization has access to this key.

A general discussion on encryption algorithms is beyond the scope of this report, but at the time of this writing, it is recommended to generate RSA keys with a length of at least 4096 bits to ensure security into the near-to-moderate-term future.

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