Linux Journal continues its book excerpt series on encryption with
"To cope with the uncertainties, or at least express them, the GPG program has the concept of levels of trust in keys. A key that someone leaves on a CD on your desk may have a low level of trust. Perhaps someone switched or copied the CD. A key that you yourself generated a moment ago can be trusted absolutely. You might notice that the output when we generated a key included the text "key marked as ultimately trusted."
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