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Menezes (1999), an unknown key-share (UKS) attack on an authenticated key agreement (AK) or authenticated key agreement with key confirmation (AKC) protocol
Unknown_key-share_attack
Type of cryptographic attack
are initially unknown, but where some mathematical relationship connecting the keys is known to the attacker. For example, the attacker might know that
Related-key_attack
Privacy-focused encrypted messaging app
of the Signal Protocol. Among other findings, they presented an unknown key-share attack on the protocol, but in general, they found that it was secure
Signal_(software)
Non-federated cryptographic protocol
analysis of TextSecure v3. Among other findings, they presented an unknown key-share attack on the protocol, but in general, they found that it was secure
Signal_Protocol
Public-key exchange protocol
Kaliski presented an unknown key-share attack that exploited the missing identities in the MQV key exchange protocol. The attack works against implicitly
MQV
Cryptographic algorithm created by Adi Shamir
sufficient number of shares. Shamir's secret sharing is used in some applications to share the access keys to a master secret. SSS is used to secure a
Shamir's_secret_sharing
Any attack based on information gained from the implementation of a computer system
include: Cache attack – attacks based on attacker's ability to monitor cache accesses made by the victim in a shared physical system as in virtualized environment
Side-channel_attack
Free encrypted messaging app
TextSecure encryption protocol. Among other findings, they presented an unknown key-share attack on the protocol, but in general, they found that the encrypted
TextSecure
Method of exchanging cryptographic keys
establish a shared secret key over an insecure channel. This key can then be used to encrypt subsequent communications using a symmetric-key cipher. Diffie–Hellman
Diffie–Hellman_key_exchange
Cryptographic key agreement scheme
that keys should not be used for more than one purpose, and presents various workarounds. STS-MAC is vulnerable to some unknown key-share attacks, whereby
Station-to-Station_protocol
Canadian cryptographer
Science, 2020 (2001), 308–318. doi:10.1007/3-540-45353-9_23 "Unknown key-share attacks on the station-to-station (STS) protocol" (with S. Blake-Wilson)
Alfred_Menezes
2017 video game
PUBG: Battlegrounds (previously titled PlayerUnknown's Battlegrounds) is a 2017 battle royale video game published by Krafton, and developed by Krafton's
PUBG:_Battlegrounds
Cryptographic attack
symmetric-key ciphers are vulnerable to brute force attacks, every cryptographic hash function is inherently vulnerable to collisions using a birthday attack.
Collision_attack
Novella by H. P. Lovecraft
The Dream-Quest of Unknown Kadath is a horror novella by American writer H. P. Lovecraft. Begun probably in the autumn of 1926, the draft was completed
The Dream-Quest of Unknown Kadath
The_Dream-Quest_of_Unknown_Kadath
2001 terror attacks in the U.S.
to the attack; however, the exact number is unknown due to the difficulty in determining with certainty which cases are related to the attack. Sources
September_11_attacks
Attacks against common ciphers
"related keys" — for related-key attacks, how many related key queries are needed Attacks that lead to disclosure of the key or plaintext. Attacks that allow
Cipher_security_summary
Hash functions
By using a key unknown to the attacker, a keyed hash function like SipHash prevents this sort of attack. While it is possible to add a key to an unkeyed
SipHash
struck by two unknown projectiles around 11 nautical miles north of Oman after it had left a port in the United Arab Emirates. The attack started a fire
List of attacks during the 2026 Iran war
List_of_attacks_during_the_2026_Iran_war
Hash function phenomenon
collision or hash clash is when two distinct pieces of data in a hash table share the same hash value. The hash value in this case is derived from a hash
Hash_collision
Cryptographic attack
a classical scenario, the key is unknown to the attacker. Known-/chosen-key distinguishing attacks apply in the "open key model" instead. They are known
Known-key distinguishing attack
Known-key_distinguishing_attack
2023 armed incursions and massacres in Israel
Israel has identified Yahya Sinwar and Mohammed Deif as the key individuals in planning the attacks, the leadership abroad and the rest of the political wing
October_7_attacks
Islamist terror attacks in India
the Mumbai terror attack probe. However, Interpol secretary general Ronald Noble said that Indian intelligence agencies did not share any information with
2008_Mumbai_attacks
Encrypted information
chosen-ciphertext attack Indifferent chosen-ciphertext attack Related-key attack: similar to a chosen-plaintext attack, except the attacker can obtain ciphertexts
Ciphertext
Peer-to-peer Internet platform for censorship-resistant communication
associated with a key. This is unlike most other P2P networks where node administrators can employ a ratio system, where users have to share a certain amount
Hyphanet
Key that is easy to break with a specific cipher
certificates they assessed share keys due to insufficient entropy during key generation, and were able to obtain DSA and RSA private keys of TLS and SSH hosts
Weak_key
Secure communication method
theorem. The goal of QKD is to enable two parties to produce a shared random secret key known only to them, which then can be used to encrypt and decrypt
Quantum_key_distribution
Augmented password-authenticated key exchange protocol
first packet, the server has every information to compute the shared key K. The attack goes as follow: Carol → Steve: generate random value a; send I
Secure Remote Password protocol
Secure_Remote_Password_protocol
Stream ciphers
Biasse, and Robshaw reported an attack on Salsa20/6 with estimated time complexity of 2177, and a related-key attack on Salsa20/7 with estimated time
Salsa20
Unfixed software vulnerability
known as a 0-day) is a vulnerability or security hole in a computer system unknown to its developers or anyone capable of mitigating it. Until the vulnerability
Zero-day_vulnerability
Cryptographic protocols for securing data in transit
TLS protocol to support authentication based on pre-shared keys. RFC 7457 – "Summarizing Known Attacks on Transport Layer Security (TLS) and Datagram TLS
Transport_Layer_Security
Study of analyzing information systems in order to discover their hidden aspects
cryptographic key is unknown. In addition to mathematical analysis of cryptographic algorithms, cryptanalysis includes the study of side-channel attacks that do
Cryptanalysis
American comic book series
are unknown. Ankh Key Audible Key Biblio Key Compass Key Freemason Key Illuminati Key Jetpack Key Phoenix Key Scepter Key Snow Angel Key Toy Key Trident
Locke_&_Key
Attack against two United States government facilities in Benghazi, Libya
service. Eastern Libya and Benghazi were key intelligence-gathering hubs for intelligence operatives. Before the attack, the CIA was monitoring Ansar al-Sharia
2012_Benghazi_attack
Internet protocol
authentication ‒ either pre-shared or distributed using DNS (preferably with DNSSEC) ‒ and a Diffie–Hellman key exchange to set up a shared session secret from
Internet_Key_Exchange
Unsolved 1922 killings in Germany
referred to today as Hinterkaifeck ([ˈhɪntɐˌkaɪfɛk]), were murdered by an unknown assailant. Occurring approximately 70 kilometres (43 mi) north of Munich
Hinterkaifeck_murders
1918 British military attack on German-held port in Belgium
block Bruges, Keyes and Lynes decided to conduct two raids on the ports through which Bruges had access to the sea. Zeebrugge was to be attacked by a large
First_Ostend_Raid
Type of cipher
attack. Related-key attack: Like a chosen-plaintext attack, except the attacker can obtain ciphertexts encrypted under two different keys. The keys are
Block_cipher
Islamist terrorist attack in Indian-administered Kashmir
The 2025 Pahalgam attack, also referred to as the 2025 Pahalgam massacre, was an Islamist terrorist attack on tourists by three armed terrorists near Pahalgam
2025_Pahalgam_attack
Class of attack on cryptographic systems
repetitions, but not long enough to prevent the attacker from recovering, say, a "randomly" produced key. Random numbers typically go through several layers
Random number generator attack
Random_number_generator_attack
English trip hop group
Massive Attack are an English trip hop collective formed in 1988 in Bristol, England, by Robert "3D" Del Naja, Grant "Daddy G" Marshall, Adrian "Tricky"
Massive_Attack
Militant attacks
The location of Assimi Goïta was unknown until April 28. His first public appearance since the start of the attacks was in a visit to a hospital in Bamako
2026_Mali_offensives
anonymity is a public key cryptography system, where the public key is well-known and used to encrypt a message, and an unknown private key is used to decrypt
Forward_anonymity
American serial killer (1978–2012)
Israel Keyes (January 7, 1978 – December 1, 2012) was an American serial killer, rapist, bank robber, burglar, arsonist, and kidnapper. Keyes is known
Israel_Keyes
Software suite
11 wireless networks WEP keys using an implementation of the Fluhrer, Mantin and Shamir (FMS) attack alongside the ones shared by a hacker named KoreK
Aircrack-ng
Method of building collision-resistant cryptographic hash functions
of inputs related to X even though X remains unknown. Length extension attacks were actually used to attack a number of commercial web message authentication
Merkle–Damgård_construction
Early public-key cryptosystem
puzzles take the form of encrypted messages with unknown keys short enough to allow a brute force attack. Bob sends all the puzzles to Alice, who chooses
Merkle's_Puzzles
Public-key cryptosystem
{\displaystyle G} . The algorithm first performs Diffie–Hellman key agreement to establish a shared secret s {\displaystyle s} , then uses this as a one-time
ElGamal_encryption
Type of active side channel attack
secret key. DFA has also been applied successfully to the AES cipher. Many countermeasures have been proposed to defend from these kinds of attacks. Most
Differential_fault_analysis
Technique for anonymous communication over a computer network
recipient. If an attacker has compromised both ends of a route, a sender may be seen to have transferred an amount of data to an unknown computer a specified
Onion_routing
Explosive device attacks in Lebanon and Syria
Lebanon and Syria, in an Israeli attack nicknamed Operation Grim Beeper. According to an unnamed Hezbollah official, the attack took 1,500 Hezbollah fighters
2024 Lebanon electronic device attacks
2024_Lebanon_electronic_device_attacks
Family of block ciphers
successfully attacked. The best published attacks on Speck in the standard attack model (CPA/CCA with unknown key) are differential cryptanalysis attacks; these
Speck_(cipher)
Science fiction novel by qntm
one department of the secretive Unknown Organization (UO) that protects humanity from anomalous entities, or "unknowns", with her jurisdiction being those
There Is No Antimemetics Division
There_Is_No_Antimemetics_Division
Theoretical attack on block ciphers
XSL attack, a specialized algorithm, termed eXtended Sparse Linearization, is then applied to solve these equations and recover the key. The attack is
XSL_attack
victory, war aim unknown]. Der Spiegel (in German). Stein, Chris (3 March 2026). "US strikes on Iran triggered by Israel's plan to launch attack, Rubio says"
Rationale for the 2026 Iran war
Rationale_for_the_2026_Iran_war
English actress (born 1982)
nominations. She was later praised for her roles in the science fiction film Attack the Block (2011) and the Black Mirror episode "The Entire History of You"
Jodie_Whittaker
Form of cryptanalysis
obtaining guesses at values of key bits, until the number of unknown key bits is low enough that they can be attacked with brute force. Piling-up lemma
Linear_cryptanalysis
Cryptographic attack
a specific unknown key. They then try to use this data with the precomputed table from the preprocessing phase to find the particular key in as little
Time/memory/data tradeoff attack
Time/memory/data_tradeoff_attack
Network security standard to create a secure wireless home network
a remote attacker to recover the WPS PIN in 4–10 hours with a brute-force attack and, with the WPS PIN, the network's WPA/WPA2 pre-shared key (PSK). Users
Wi-Fi_Protected_Setup
Retrieved 17 November 2016. Small Air Force Observer magazine, author unknown, No. 47 July 1988 & No. 50 April 1989 "Royal Thai Air Force" (PDF). Thai
List of equipment of the Royal Thai Air Force
List_of_equipment_of_the_Royal_Thai_Air_Force
German cipher machine during World War II
making it highly resistant to conventional cryptographic attacks based on patterns the keys leave in the resulting ciphertext. For the system to be bidirectional
Enigma_machine
2026 armed conflict in West Asia
necessary condition for regime change. The US conducted an attack on Kharg Island, a key oil export hub home to 90 percent of Iran's oil exports. Over
2026_Iran_war
2023 government storming in Brazil
de Moraes, and is preemptively under arrest after she shared videos of herself during the attack on the National Congress and the Federal Supreme Court
8_January_Brasília_attacks
Cryptographic algorithm for digital signatures
bits—meaning an attacker requires a maximum of about 2 80 {\displaystyle 2^{80}} operations to find the private key—the size of an ECDSA private key would be
Elliptic Curve Digital Signature Algorithm
Elliptic_Curve_Digital_Signature_Algorithm
Aspect of nuclear deterrence strategy
Historically, the shared nuclear weapon delivery systems were not restricted to bombs. Greece used Nike-Hercules Missiles as well as A-7 Corsair II attack aircraft
Nuclear_sharing
English footballer (born 1980)
in the immediate aftermath of the September 11 attacks. During his early days at Chelsea, Terry shared a flat with Andrew Crofts. Terry began to establish
John_Terry
Digital verification standard
algorithm parameters which may be shared between different users of the system, while the second phase computes a single key pair for one user. Choose an approved
Digital_Signature_Algorithm
Symptoms reported by US and Canadian officials abroad
that the health problems were either the result of an attack or due to exposure to an unknown device, but that it was not blaming the Cuban government
Havana_syndrome
Software system for finding relevant information on the Web
the search engine market with a share of approximately 73%, while Google holds around 25%. Yandex also remains a key player in localized services including
Search_engine
2021 attack to stop election certification
was attacked by a mob of supporters of President Donald Trump. Academic debate exists about characterizing the event as a self-coup. The attack happened
January 6 United States Capitol attack
January_6_United_States_Capitol_attack
Violent tactic resulting in the attacker's intentional death
A suicide attack (also known by a wide variety of other names, see below) is a deliberate attack in which the perpetrators intentionally end their own
Suicide_attack
authentication protocol uses asymmetric key management and common key cryptography, and relies on the use of shared secrets and hash functions to respond
Key_selection_vector
Simple and widely known encryption technique
places, equivalent to a right shift of 23 (the shift parameter is used as the key): When encrypting, a person looks up each letter of the message in the "plain"
Caesar_cipher
Terrorist attacks in Ottawa, Canada
a horrific terrorist attack on its Parliament, we share the sense of outrage and trauma of the people of Canada over the attack on the highest institution
2014 shootings at Parliament Hill, Ottawa
2014_shootings_at_Parliament_Hill,_Ottawa
International military operation to protect Red Sea shipping
attacks on shipping in the Red Sea. Following the breakout of the Gaza war in October 2023, the Houthi movement in Yemen launched a series of attacks
Operation_Prosperity_Guardian
British politician (born 1970)
Retrieved 15 June 2022.{{cite web}}: CS1 maint: bot: original URL status unknown (link) Social Care Funding: Time to End a National Scandal (PDF). House
Andy_Burnham
Text used for user authentication to prove identity
rainbow table attacks (which are more efficient than cracking). If it is reversibly encrypted then if the attacker gets the decryption key along with the
Password
Terrorist attack in India
linking the attackers to Pakistan. Shahid Latif, a senior Jaish-e-Mohammed commander and mastermind of the attack was assassinated by unknown gunmen on
2016_Pathankot_attack
captured and beached by Eren Yeager's Attack Titan form. Forming an alliance with Paradis, the Volunteers begin to share technology with the islanders, with
List of Attack on Titan characters
List_of_Attack_on_Titan_characters
World Wide Web content existing on darknets
counting". Sophos. May 2020. "Initial Access Brokers Are Key to Rise in Ransomware Attacks". Recorded Future. 2022. "An interview with initial access
Dark_web
British-American mass murderer and terrorist (1991–2014)
would share it with him soon. Throughout May 2014, Rodger drove throughout Santa Barbara and Montecito during the weeks leading up to the attacks. On May
Elliot_Rodger
Cryptographic hash function
Square Root (VSSR) is the following problem: Let n be the product of two unknown primes of approximately the same size, let k ≤ (log(n))c, and let (p1,p2
Very_smooth_hash
British TV sitcom (2015–2018)
Peter Kay's Car Share is a British sitcom set around supermarket assistant manager John Redmond (Peter Kay) and promotions rep Kayleigh Kitson (Sian Gibson)
Peter_Kay's_Car_Share
Deliberate Salmonella contamination in Oregon, US
Wasco County elections. The incident was the first and largest bioterrorist attack in U.S. history. Rajneesh's followers had previously gained political control
1984 Rajneeshee bioterror attack
1984_Rajneeshee_bioterror_attack
Type of cryptanalytic attack
reconstructed the attacker then has a representation of the encryption, without exact knowledge of the secret key. The interpolation attack can also be used
Interpolation_attack
2018 attempted murder in Salisbury, England
Mance; Michael Peel; Guy Chazan (6 September 2018). "Key western allies back UK over Salisbury attack". Financial Times. Archived from the original on 10
Poisoning of Sergei and Yulia Skripal
Poisoning_of_Sergei_and_Yulia_Skripal
Block cipher used by the 4C Entity
adaptively chosen plaintexts/ciphertexts, and a 253.5 attack when both the key and S-box are unknown. Following an announcement by Japanese HDTV broadcasters
Cryptomeria_cipher
2013 gas attack during the Syrian Civil War
The Ghouta chemical attack was a chemical attack carried out by the forces of Syrian President Bashar al-Assad, in the early hours of 21 August 2013 in
Ghouta_chemical_attack
Hemorrhagic fever caused by ebolaviruses
involved in the Sudan outbreak knew that they were dealing with a heretofore unknown disease, the actual "positive identification" process and the naming of
Ebola
Domestic terrorist attacks
far-right terrorist Anders Behring Breivik committed two domestic terrorist attacks in Norway against the government, the civilian population, and a Workers'
2011_Norway_attacks
Former house in Washington, D.C.
plan. While being detained on a British ship, the attack on Baltimore began on September 12. After Key watched Fort McHenry and its large American flag
Key_House
Conspiracy theory about the Pearl Harbor attack
for possibly containing coded messages, for unknown agents, giving advance notice of the Pearl Harbor attack. The ads were headlined "Achtung, Warning,
Pearl Harbor advance-knowledge conspiracy theory
Pearl_Harbor_advance-knowledge_conspiracy_theory
2015 terrorist attack in Paris, France
satirical weekly magazine Charlie Hebdo were targeted in a terrorist shooting attack by two French-born Algerian Muslim brothers, Saïd Kouachi [ar; de; fa; fr]
Charlie_Hebdo_shooting
Terrorist attack in the United States
26, 1993, Ramzi Yousef and associates carried out a van bomb terrorist attack below the North Tower of the World Trade Center in New York City. The 1
1993 World Trade Center bombing
1993_World_Trade_Center_bombing
Series of murders in Canada
Royal Canadian Mounted Police (RCMP) in the community of Enfield. The attacks are the deadliest shooting rampage in Canadian history. Police were criticized
2020_Nova_Scotia_attacks
Collection of compromised internet-connected devices controlled by a third party
Dixon Murray (28 September 2012). "Banks can't prevent cyber attacks like those hitting PNC, Key, U.S. Bank this week". Cleveland.com. Archived from the original
Botnet
2026 film by Yeon Sang-ho
intelligence, allowing them to share sensory data in real time through mycelium and continuously evolve and learn upon every failed attack within a short period
Colony_(2026_film)
Association football club in Birmingham, England
First Superclub. Unknown Publisher. p. 209. ISBN 978-0-9569833-1-2. Lerwill, John (2012). Aston Villa The First Superclub. Unknown Publisher. p. 213
Aston_Villa_F.C.
Block cipher
against unforeseen/unknown types of attacks. Nevertheless, the very fact that the key is used as the encryption program means that some keys may correspond
FROG
2025 American military action
facility at an unknown location. It has consistently claimed that it is developing nuclear energy and not nuclear weapons. Before Israel attacked Iran in June
2025 United States strikes on Iranian nuclear sites
2025_United_States_strikes_on_Iranian_nuclear_sites
antisemitism, often called "the longest hatred", has included many violent attacks on Jewish institutions such as synagogues, Jewish Community Centers, and
List of attacks on Jewish institutions
List_of_attacks_on_Jewish_institutions
UNKNOWN KEY-SHARE-ATTACK
UNKNOWN KEY-SHARE-ATTACK
Surname or Lastname
English
English : nickname for a frugal person, from Middle English spare ‘sparing’, ‘frugal’.
Female
English
Feminine variant spelling of English unisex Shea, probably SHAE means "hawk-like."Â
Male
English
Short form of English Kenneth, KEN means both "born of fire" and "comely; finely made." Also used as a nickname for other names that begin with Ken-. Compare with another form of Ken.
Surname or Lastname
English and Irish (County Limerick; of English origin)
English and Irish (County Limerick; of English origin) : from Old English scīr, Middle English s(c)hire ‘shire’, perhaps a topographic name for someone who lived by the meeting place of a shire.
Boy/Male
Gaelic
Son of Aidan.
Boy/Male
Unknown
Origin unknown.
Surname or Lastname
English and Scottish
English and Scottish : variant of Kay.
Male
English
Variant spelling of English unisex Shea, possibly SHAYE means "hawk-like."
Surname or Lastname
English
English : unexplained; possibly a respelling of Kay 6, a shortened form of Scottish and Irish McKay.Korean : There is only one Chinese character and one clan for the Kye family name. According to the Kye family genealogy, the clan was founded by a Ming Dynasty government official named Kye SÅk-son who migrated to KoryÅ and settled in today’s Suan County of Hwanghae Province. The majority of bearers of the Kye family name today live in North Korea.
Boy/Male
Unknown
Origin unknown.
Female
English
Variant spelling of English Sherry, SHARI means "darling."
Male
English
Anglicized form of Irish Gaelic Seán, SHANE means "God is gracious."
Boy/Male
Christian, Gaelic, Indian
The One who Opens the Lock
Surname or Lastname
English
English : unexplained.
Surname or Lastname
English and German
English and German : variant of Kay.Irish : reduced form of McKay.
Surname or Lastname
English
English : nickname from Middle English ca ‘jackdaw’, from an unattested Old Norse ká. See also Daw.English : nickname from Middle English cai, kay, kei ‘left-handed’, ‘clumsy’.English : metonymic occupational name for a locksmith, from Middle English keye, kaye ‘key’. Compare Care, Kear.English : topographic name for someone living on or near a quay, Middle English kay(e), Old French cay.English : from a Middle English personal name which figures in Arthurian legend. It is found in Old Welsh as Cai, Middle Welsh Kei, and is ultimately from the Latin personal name Gaius.Scottish and Irish : reduced form of McKay.French : variant of Quay, cognate with 2.Much shortened form of any of various names, mostly Eastern European, beginning with the letter K-.Variant of Danish and Frisian Kai.
Girl/Female
Indian, Tamil
Unknown Species; Not Known
Male
Japanese
(1-å¥, 2-謙, 3-ç ”) Japanese name KEN means 1) "healthy, strong" or 2) "modest," or 3) "study." Compare with another form of Ken.
Boy/Male
Indian, Sanskrit, Tamil
Key; Love
Girl/Female
Unknown
Origin unknown.
UNKNOWN KEY-SHARE-ATTACK
UNKNOWN KEY-SHARE-ATTACK
Girl/Female
Indian
Beautiful
Girl/Female
French German
Of the race of women.
Girl/Female
Hindu
Talent given by God, Beloved, Loving, Gods gift
Girl/Female
Gujarati, Hindu, Indian, Kannada, Malayalam, Marathi, Sanskrit, Sindhi, Telugu
Enveloped with Silk; Goddess Durga
Boy/Male
Muslim
Ease, Wealth, Lives forever
Girl/Female
Tamil
Direct, Lead
Girl/Female
American, Anglo, Armenian, Australian, British, Chinese, Christian, Czech, Danish, Dutch, English, Finnish, French, German, Indian, Italian, Kannada, Latin, Marathi, Netherlands, Polish, Swedish, Tamil
Downy Bearded; Youthful; Name of a Poem; Jove's Child
Boy/Male
Hindu, Indian, Tamil
God
Boy/Male
Indian, Sanskrit
Intellectual Hegemony
Boy/Male
Arabic, Muslim, Sindhi
Attention to Details; Keen-eyed
UNKNOWN KEY-SHARE-ATTACK
UNKNOWN KEY-SHARE-ATTACK
UNKNOWN KEY-SHARE-ATTACK
UNKNOWN KEY-SHARE-ATTACK
UNKNOWN KEY-SHARE-ATTACK
n.
An instrument which is turned like a key in fastening or adjusting any mechanism; as, a watch key; a bed key, etc.
a.
Unknowing; also, unknown; unmeaning.
a.
Cold as a metallic key; lifeless.
n.
A sharp tool or weapon.
n.
A key for opening more locks than one; a master key.
v. t.
To set on shore.
a.
Not known; unknown.
n.
An indehiscent, one-seeded fruit furnished with a wing, as the fruit of the ash and maple; a samara; -- called also key fruit.
n.
A position or condition which affords entrance, control, pr possession, etc.; as, the key of a line of defense; the key of a country; the key of a political situation. Hence, that which serves to unlock, open, discover, or solve something unknown or difficult; as, the key to a riddle; the key to a problem.
v. t.
To fasten or secure firmly; to fasten or tighten with keys or wedges.
n.
That part of an instrument or machine which serves as the means of operating it; as, a telegraph key; the keys of a pianoforte, or of a typewriter.
v.
A certain quantity; a portion; a part; a division; as, a small share of prudence.
a.
Not known; unknown.
n.
A family of tones whose regular members are called diatonic tones, and named key tone (or tonic) or one (or eight), mediant or three, dominant or five, subdominant or four, submediant or six, supertonic or two, and subtonic or seven. Chromatic tones are temporary members of a key, under such names as " sharp four," "flat seven," etc. Scales and tunes of every variety are made from the tones of a key.
n.
A sharp tone or note.
a.
Unknown.
imp. & p. p.
of Share
a.
Not known; not apprehended.