hint; suggestion; clue; suggestion
implicitly; indirectly; tacitly; by implication; obscurely
secret manoeuvres (maneuvers); operating behind the scenes
memorization; memorisation; learning by heart
suspicion will raise bogies; once you suspect something, everything else will look suspicious; jumping at shadows
(theatrical) blackout; taking a (sudden) turn for the worse; rapid deterioration
dark side (of nature, town, etc.)
dark clouds; threatening signs; ominous indications
tacit; unspoken; implicit
tacit understanding; unspoken agreement
dark; gloomy; somber; depressing
personal identification number; PIN; password number
encryption; encoding; encipherment
recitation; reciting from memory
light and darkness; light and shade
autosuggestion; self-suggestion
Dark Continent (i.e. Africa)
rote memorization (memorisation); rote learning; indiscriminate memorizing (memorising)
secret feud; wordless pantomime performed in the dark
foolish; imbecile; feebleminded
the dark side; the seamy side
reef; sunken rock; unforeseen difficulty
to run aground; to strike a rock; to be stranded on a reef; to reach a deadlock; to come to a standstill; to run into difficulties
dark; gloomy; black; doleful; discouraged; disappointed
dark clouds gather; threatening signs emerge; trouble is afoot
suggestive; allusive; evocative; implicit
subterranean drain; culvert; conduit
to decide the outcome (e.g. game); to be very different; to be sharply contrasted
night-vision scope; night scope
groping in the dark; exploring new avenues without having any clues
dark place; unlit spot; darkness
memorizing a musical score
assassination of US President John F. Kennedy (November 22, 1963); JFK assassination
memorization power; ability to remember; (good) memory
eclipse period (in viral lifecycle); eclipse phase; dark age
secretly; covertly; tacitly
nyctophobia; fear of the dark; scotophobia
cryptographic key; encryption key
gloom; darkness; seclusion
a work or subject to be memorized (memorised)
butoh; style of contemporary Japanese dance featuring dancers in white paint
camera obscura; black box
encrypted mail; cyphermail
encryption key; cryptographic key
cryptographic system; cryptosystem
behind-the-scenes maneuvering; behind-the-scenes manoeuvring; secret maneuvers; secret manoeuvres
cryptography; encryption technology
dead of night; shades of night; black of night
declaring a concealed kong; forming a concealed four-of-a-kind
beautiful scenery of spring; red-light district
suspicion begets monsters
cryptography; cryptographic theory
sad thought; depressing reflection
assassination of US President John F. Kennedy (November 22, 1963); JFK assassination
terminator; twilight zone
secretly; covertly; tacitly
scent of a flower floating about in the air; lingering scent of a flower in the darkness
cryptographic algorithm; cipher algorithm
gathering dark clouds; being under the shadow of
secret language; code word; argot
crypto-assets; cryptocurrency assets
dark figure (esp. of crime); dark number; hidden figure; difference between the actual and reported figure
symmetric key cryptography
cipher-key; key to a code
secret key cryptography; symmetric key cryptography
road taken by a Chinese ajari buddhist monk when he incurred the wrath of emperor Genso (685-762)
dark hole; idiot; fool; road taken by a Chinese ajari buddhist monk when he incurred the wrath of emperor Genso (685-762)
Great Dark Spot (on Neptune)
cryptography; cryptographic technique
concealed pung; concealed three-of-a-kind
body part encryption indication
implicit meaning; tacitly understood meaning
end-to-end encryption; E2EE
quantum-resistant cryptography
(both) the bright and dark sides
scotopic vision; twilight vision
conventional cryptosystem
cryptographic synchronization
implicit link (process definition)
dark line (in a spectrum); absorption line
encryption; coding; password
conventional cryptosystem
link-by-link encipherment
end-to-end encryption; E2EE
symmetric key cryptography
Data Encryption Standard; DES
asymmetric key cryptography; asymmetric key cryptosystem
book cipher; Ottendorf cipher
indiscriminate learning by heart
symmetric key cryptography
implicit scope terminator
giving an amorous sidelong look; casting an amorous glance (at); playing up to someone behind the scenes
pairing-based cryptography
subterranean drain; culvert; conduit
darkness; blackness; Kalaratri (Deva)