The main form of logo
The main form of logo, slightly modified, stressing the [p]retty [g]ood [g]uard. (-; This way, the "fo(u)r" figure made of intertwined words is more prominent. At the same time, the number one ("ace") is formed along the edges of the figure.
Some other forms of letter combinations follow (possibly welcome for some other purposes)...
I have reduced maximally all the graphical elements being led by two main demands: a modern look and with no much details, so the picture is very stylized and symbolic. The level of details though may be corrected, and their number added, if such demand would exist, depending on the "fine tweaking" needed.
In its current ("flat/clean") state, the logo is equally suitable, and in my opinion enough expressive and distinctive, for all the usual purposes: web sites, headings of all sorts of documents, business and other cards, notebooks, badges, T-shirts and so on.
By possibly adding more details, the range of applicability listed above shouldn't be reduced.
Nuances of the colors used are considerately selected to be pleasant for eyes and attractive, but still enough intensive for calling needed attention. (Logos whose colors/shapes after certain amount of time -- eg. office workers and generally people who are watching them often for any reason -- produce feeling of unpleasantness, or any other sort of irritability or subtle disturbance, are not happiest solutions. Often it is exactly the matter of a wrong shape at a wrong place, or a wrong nuance of a color. It makes difference then between a well shocked and well, and long standingly, attracted.)
Specifications of the main form. [Also available at his page.]
Dimensions: width=250, height=300
Background: transparent
Font : Courier New, bold
Font size : 36
Font color: "gn " #FF9900 | 255 153 0
"priv cy" #FF9900 | 255 153 0
"guard" #CC0000 | 204 0 0
Font
positions: The right edge of the right `foot' of "n" from
"gnu" touches the edge of yellow rectangle at
height of y=192. After this one all other
positions are defined.
Rectangles
color: foreground 1st - yellow #FDEB68 | 253 235 104
middle 2nd - red #FF3300 | 255 51 0
background 3rd - blue #330099 | 51 0 153
Rectangles
dimensions: foreground 1st - width=30 height=300 x=97 y=0
middle 2nd - width=129 height=78 x=32 y=73
background 3rd - width=194 height=87 x=56 y=84
*
The font
chosen: Courier, to denote plainness, like in "plain text",
simplicity, cleanliness, clarity, a "transparency",
like in (fully) open source.
Then, its fixed width is convenient for ASCII art,
the art/play of modern age, and for keeping proportions
of the created figures, and text, well fixed and clear.
Also, it resembles the letters of typewriter, an "old
fashioned" element denoting certain "tradition" and
"roots" of the project/primary motive, giving to the
modern needed continuity, vitality and support.
The dot
before
"privacy": It denotes the source operative system and its hidden
("guarded/protected") files/directories, stressing
thus another essential characteristic of GnuPG.
Rectangles: They are (various) "shields" and means of defense and
protection, given in modern/stylized/symbolic forms
and without unnecessary details. (The yellow rectangle
easily may represent a sword as well, red one a shield
and so on. In the same time they may represent some
more "innocent" forms, if needed.)
They are multiple, functioning from various levels,
and are in various dynamic and interactive positions.
Rectangles
colors: The basic colors/methods all other ones are derived
from, by mutual combinations.