Hung buv rav: patlh Hut
  classified level 9 and above (KBoP)

Hung buv = "security classification" (i.e. security clearance)

TREK TRIVIA:

Shortly before her death in 2387, Ambassador K'Ehleyr was denied access to files on the Net relating to the High Council's inquiries into the Khitomer Massacre,  Council Member Duras had restricted the files to *du-ko-cha* clearance or higher and K'Ehleyr's own clearance of *pah-doQ-cha* was insufficient. (TNG "Reunion")

SEE ALSO:

poj                     analysis (n)
HIDjolev                menu (n)
mem                     catalog (n)
chovnatlh               specimen (n)
mut                     species (n)
Segh                    race (type, sort, class) (n)

ngoq                    code (n)
ngoqDe'                 encoded message (n)
chaw' ngoq              password, passcode (n)

buv                     classify (v)
poj                     analyze (v)
pegh                    keep something secret, be secret, classified (v)

(Lieven, 11/2014 < qepHom 2014):  Maltz also said that now that everyone knows the word meS ["knot"], he can add that meS is a frequently used slang term for "encrypt". Similarly, meSHa' means "decrypt".

Lieven also mentioned that So' is the normal way to say "encrypt", So'Ha' means "decrypt with permission", and baghHa' means "decrypt without permission".