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Secure communication method
Quantum key distribution (QKD) is a secure communication method that implements a cryptographic protocol based on the laws of quantum mechanics, specifically
Quantum_key_distribution
Methods used to share cryptographic key material with other parties
symmetric key cryptography, both parties must possess a secret key which they must exchange prior to using any encryption. Distribution of secret keys has been
Key_distribution
In cryptography, a key distribution center (KDC) is part of a cryptosystem intended to reduce the risks inherent in exchanging keys. KDCs often operate
Key_distribution_center
Topics referred to by the same term
Distribution may refer to: Look up distribution, distribute, distributor, or distributer in Wiktionary, the free dictionary. Distribution (mathematical
Distribution
Encryption technique
diplomatic and military communication, but the problems of secure key distribution make them impractical for many applications. First described by Frank
One-time_pad
Cryptography based on quantum mechanical phenomena
quantum cryptography is quantum key distribution (QKD), which offers an information-theoretically secure solution to the key-exchange problem. Quantum cryptography
Quantum_cryptography
Method of exchanging cryptographic keys
as Diffie–Hellman key exchange. While that system was first described in a paper by Diffie and me, it is a public key distribution system, a concept developed
Diffie–Hellman_key_exchange
Quantum key distribution (QKD) protocols are used in quantum key distribution. The first protocol of that kind was BB84, introduced in 1984 by Charles
List of quantum key distribution protocols
List_of_quantum_key_distribution_protocols
Algorithm
Symmetric-key algorithms are algorithms for cryptography that use the same cryptographic keys for both the encryption of plaintext and the decryption
Symmetric-key_algorithm
Algorithm for public-key cryptography
involves four steps: key generation, key distribution, public-key operation (used for encryption or verifying a signature), and private key operation (used
RSA_cryptosystem
Program of US National Security Agency
accounting, and distribution. Specifically, EKMS generates and distributes electronic key material for all NSA encryption systems whose keys are loaded using
Electronic Key Management System
Electronic_Key_Management_System
Practice and study of secure communication techniques
a "public key" to encrypt a message and a related "private key" to decrypt it. The advantage of asymmetric systems is that the public key can be freely
Cryptography
Security protocol for wireless computer networks
end-user (such as WEP, WPA, WPA2, WPA3) and the method of authentication key distribution, as well as the encryption protocol used. As of July 2020, WPA3 is
Wi-Fi_Protected_Access
Networks connecting quantum processors
quantum key distribution to generate a key k A R {\displaystyle k_{AR}} . Similarly, R and B run quantum key distribution to generate a key k R B {\displaystyle
Quantum_network
Cryptographic system with public and private keys
Public-key cryptography, or asymmetric cryptography, is the field of cryptographic systems that use pairs of related keys. Each key pair consists of a
Public-key_cryptography
Computer hardware technology that uses quantum mechanics
quantum theory to cryptography protocols and demonstrated that quantum key distribution could enhance information security. Quantum algorithms then emerged
Quantum_computing
Function that derives secret keys from a secret value
cryptography, a key derivation function (KDF) is a cryptographic algorithm that derives one or more secret keys from a secret value such as a master key, a password
Key_derivation_function
Computer communications authentication algorithm
sized key block_sized_key = computeBlockSizedKey(key, hash, blockSize) o_key_pad ← block_sized_key xor [0x5c blockSize] // Outer padded key i_key_pad ←
HMAC
Cryptography secured against quantum computers
quantum-resistant, is the development of cryptographic algorithms (usually public-key algorithms) that are currently thought, but not proven, to be secure against
Post-quantum_cryptography
System that can issue, distribute and verify digital certificates
entity via digital signatures. A public key infrastructure (PKI) is a system for the creation, storage, and distribution of digital certificates, which are
Public_key_infrastructure
Quantum key distribution protocol
Bennett and Gilles Brassard in 1984, is a prepare-and-measure quantum key distribution (QKD) protocol, in which, one party (e.g. Alice) performs the encoding
BB84
release) University of Tokyo, Fujitsu, and NEC Succeed in Quantum Key Distribution from Single-Photon Emitter at World-Record Distance of 120 km - Fujitsu
List of companies involved in quantum computing, communication or sensing
List_of_companies_involved_in_quantum_computing,_communication_or_sensing
Information held in the state of a quantum system
quantum key distribution which provide a theoretical solution to the security issue of a classical key. The advantage of quantum key distribution is that
Quantum_information
Number of bits in a key used by a cryptographic algorithm
In cryptography, key size or key length refers to the number of bits in a key used by a cryptographic algorithm (such as a cipher). Key length defines the
Key_size
Discrete probability distribution
probability theory and statistics, the Poisson distribution (/ˈpwɑːsɒn/) is a discrete probability distribution that expresses the probability of a given number
Poisson_distribution
Key distribution is an important issue in wireless sensor network (WSN) design. WSNs are networks of small, battery-powered, memory-constraint devices
Key distribution in wireless sensor networks
Key_distribution_in_wireless_sensor_networks
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
Probability distribution
particular case of the gamma distribution. It is the continuous analogue of the geometric distribution, and it has the key property of being memoryless
Exponential_distribution
Study of analyzing information systems in order to discover their hidden aspects
access to the contents of encrypted messages, even if the cryptographic key is unknown. In addition to mathematical analysis of cryptographic algorithms
Cryptanalysis
High-dimensional quantum key distribution (HDQKD) is a technology for secure communication between two parties. It allows for higher information efficiency
High-dimensional quantum key distribution
High-dimensional_quantum_key_distribution
Used for encoding or decoding ciphertext
function Key distribution center Key escrow Key exchange Key generation Key management Key schedule Key server Key signature (cryptography) Key signing
Key_(cryptography)
Techniques to protect against brute-force attack
In cryptography, key stretching techniques are used to make a possibly weak key, typically a password or passphrase, more secure against a brute-force
Key_stretching
the US food distribution system. Within the United States, there is an issue of food insecurity where food distribution is one of the key solutions to
Food_distribution
Chinese quantum research satellite
European receiving stations. The satellite conducted Space-Earth quantum key distribution (Chinese: 量子密钥分发) experiments, facilitated by laser communications
Quantum Experiments at Space Scale
Quantum_Experiments_at_Space_Scale
Process of converting plaintext to ciphertext
messages involves keys. The two main types of keys in cryptographic systems are symmetric-key and public-key (also known as asymmetric-key). Many complex
Encryption
Cryptographic primitives that involve lattices
standards of post-quantum cryptography. Unlike more widely used and known public-key schemes such as the RSA, Diffie-Hellman or elliptic-curve cryptosystems—which
Lattice-based_cryptography
Set of cryptographic hash functions
the Rwandan genocide. SHA-256 and SHA-512 are used in DNSSEC. Linux distributions usually use 512-bit SHA-2 for secure password hashing. Several cryptocurrencies
SHA-2
Message-digest hashing algorithm
non-cryptographic purposes, for example for determining the partition for a particular key in a partitioned database, and may be preferred due to lower computational
MD5
German cipher machine during World War II
between the keys and the lights with each keypress. In essence, the rotor's motion means every letter is encrypted with a different cryptographic key, making
Enigma_machine
Block cipher
Threefish is a symmetric-key tweakable block cipher designed as part of the Skein hash function, an entry in the NIST hash function competition. Threefish
Threefish
Standard for the encryption of electronic data
different key and block sizes. For AES, NIST selected three members of the Rijndael family, each with a block size of 128 bits, but three different key lengths:
Advanced_Encryption_Standard
Cryptanalytic method for unauthorized users to access data
brute-force attack or exhaustive key search is a cryptanalytic attack that consists of an attacker submitting many possible keys or passwords with the hope
Brute-force_attack
Method to set encryption keys
key (PSK) is a shared secret which was previously shared between the two parties using some secure channel before it needs to be used. To build a key
Pre-shared_key
Protocol in quantum cryptography
In quantum cryptography, a decoy state protocol is a quantum key distribution (QKD) scheme. Practical QKD systems use multi-photon sources, in contrast
Decoy_state
Type of substitution cipher
exchanges letters for symbols which are fragments of a grid. The example key shows one way the letters can be assigned to the grid. The Pigpen cipher
Pigpen_cipher
Suite of IETF specifications
may reject any centralized keying for this reason. Some governments might try to ban DNSSEC-backed encryption key distribution. In September 2008, ICANN
Domain Name System Security Extensions
Domain_Name_System_Security_Extensions
Simple type of polyalphabetic encryption system
increment is determined by the corresponding letter of another text, the key. In a Caesar cipher, each letter of the alphabet is shifted along some number
Vigenère_cipher
Field of robotics, physics
communication between mobile platforms was proposed for reconfigurable quantum key distribution (QKD) applications using unmanned aerial vehicle (UAVs, a.k.a. drones)
Quantum_robotics
problems include quantum key distribution, randomness expansion, and randomness amplification. The goal of quantum key distribution is for two parties, Alice
Device-independent quantum cryptography
Device-independent_quantum_cryptography
Algorithm for encrypting and decrypting information
deciphering key. If one key cannot be deduced from the other, the asymmetric key algorithm has the public/private key property and one of the keys may be made
Cipher
Information used for message authentication and integrity checking
quantum cryptography. By contrast to other cryptographic tasks, such as key distribution, for a rather broad class of quantum MACs it has been shown that quantum
Message_authentication_code
Mathematical scheme for verifying the authenticity of digital documents
Digital signatures are a type of public-key cryptography, and are commonly used for software distribution, financial transactions,[citation needed]
Digital_signature
Alternative SSH server and client
cryptographic libraries like LibTomCrypt included internally in the Dropbear distribution. It derives some parts from OpenSSH to handle BSD-style pseudo terminals
Dropbear_(software)
Archive file format for cryptography objects
cryptography objects as a single file. It is commonly used to bundle a private key with its X.509 certificate or to bundle all the members of a chain of trust
PKCS_12
Digital verification standard
involves four operations: key generation (which creates the key pair), key distribution, signing and signature verification. Key generation has two phases
Digital_Signature_Algorithm
Free and open-source disk encryption utility
block cipher mode of operation is XTS. It generates the header key and the secondary header key (XTS mode) using PBKDF2 with a 512-bit salt. By default, they
VeraCrypt
Concept in cryptography
Since a one-time signature scheme key can only sign a single message securely, it is practical to combine many such keys within a single, larger structure
Hash-based_cryptography
Password cracking dataset
passwords. A common defense against this attack is to compute the hashes using a key derivation function that adds a "salt" to each password before hashing it
Rainbow_table
Indian cybersecurity company
quantum key distribution product, QNu Labs received support from Cisco Launchpad in 2018. Subsequently, it launched two products—a quantum key distributor
QNu_Labs
Message sent to a certificate authority to apply for a certificate
In public key infrastructure (PKI) systems, a certificate signing request (CSR or certification request) is a message sent from an applicant to a certificate
Certificate_signing_request
Message authentication code algorithm
One-key MAC (OMAC) is a family of message authentication codes constructed from a block cipher much like the CBC-MAC algorithm. It may be used to provide
One-key_MAC
Aspect of cryptography
mechanism, based on the X.509 system; a key setup phase, where a symmetric encryption key is formed by employing public-key cryptography; and an application-level
Cryptographic_protocol
Austrian physicist
physicist who conducts research in quantum communication and quantum key distribution. He has taught as an associate professor at the University of Waterloo
Thomas_Jennewein
System that regulates the formation of blocks on a blockchain
protocols because the variance of a rectangular distribution is lower than the variance of a Poisson distribution (with the same mean).[further explanation
Proof_of_work
Computer authentication protocol
authenticates itself to the Authentication Server (AS) which is part of the key distribution center (KDC). The KDC issues a ticket-granting ticket (TGT), which
Kerberos_(protocol)
Swiss tech company
ID Quantique (IDQ) is a Swiss company that provides quantum key distribution (QKD) systems, quantum safe network encryption, single photon counters, and
ID_Quantique
Key agreement protocol
used as a key, or to derive another key. The key, or the derived key, can then be used to encrypt subsequent communications using a symmetric-key cipher
Elliptic-curve_Diffie–Hellman
Making products available to customers
supplier's product. Summary of strategic approaches to distribution In consumer markets, another key strategic level decision is whether to use a push or
Distribution_(marketing)
Standard in public cryptography
In cryptography, PKCS #11 is a Public-Key Cryptography Standard that defines a C programming interface to create and manipulate cryptographic tokens that
PKCS_11
Computer networking standard
on networks supporting quantum key distribution", that gives an overview of networks supporting quantum key distribution (QKD) cryptographic protocols
Y.3800
Early block substitution cipher
very little security. The Playfair cipher uses a 5 × 5 table containing a key word or phrase. Memorization of the keyword and 4 simple rules was all that
Playfair_cipher
Management of cryptographic keys
substantially reduced the risk of key disclosure during distribution. It is possible, using something akin to a book code, to include key indicators as clear text
Key_management
Indian engineer and space scientist (born 1964)
systems, the Indian Regional Navigation Satellite System, quantum key distribution, and lunar exploration missions such as Chandrayaan-3. Desai was born
Nilesh_M._Desai
Quantum key distribution network
The DARPA Quantum Network (2002–2007) was the world's first quantum key distribution (QKD) network, operating 10 optical nodes across Boston and Cambridge
DARPA_Quantum_Network
Quantum key distribution protocol - B92
B92 is a quantum key distribution (QKD) protocol developed by Charles Bennett in 1992. It is a simplified alternative to the BB84 protocol, using only
B92_protocol
Indian proposed quantum computer
establish a multi-node quantum network to implement inter-city quantum key distribution (QKD) for covering distances of over 2,000 kilometres. There is also
India's_quantum_computer
Criteria for a usable quantum computer
regard implementing quantum communication, such as that used in quantum key distribution. One can demonstrate that DiVincenzo's criteria are satisfied by a
DiVincenzo's_criteria
Cryptographic method
Key exchange (also key establishment) is a method in cryptography by which cryptographic keys are exchanged between two parties, allowing use of a cryptographic
Key_exchange
Multiparty cryptographic process
Distributed key generation (DKG) is a cryptographic process in which multiple parties contribute to the calculation of a shared public and private key set. Unlike
Distributed_key_generation
Mathematical function for the probability a given outcome occurs in an experiment
In probability theory and statistics, a probability distribution describes how probabilities are assigned to the possible results of a random phenomenon—more
Probability_distribution
Encrypted information
symmetric-key system, Bob knows Alice's encryption key. Once the message is encrypted, Alice can safely transmit it to Bob (assuming no one else knows the key)
Ciphertext
Interactive key creation in cryptography
password-authenticated key agreement (PAK) method is an interactive method for two or more parties to establish cryptographic keys based on one or more
Password-authenticated key agreement
Password-authenticated_key_agreement
Swiss physicist (born 1952)
using Plug-&-Play and Coherent One Way configurations for quantum key distribution. In 1997, Nicolas Gisin and his group demonstrated Bell inequality
Nicolas_Gisin
Testable implication of local hidden-variable theories
Eq. 2. This is important in entanglement-based quantum key distribution, where the secret key rate depends on the degree of measurement correlations.
CHSH_inequality
Cryptography algorithm
the same plaintext is encrypted multiple times independently with the same key. Block ciphers may be capable of operating on more than one block size, but
Block cipher mode of operation
Block_cipher_mode_of_operation
Digital signature scheme
involves four operations: key generation (which creates the key pair), key distribution, signing and signature verification. Key generation has two phases
ElGamal_signature_scheme
Block cipher
Blowfish is a symmetric-key block cipher, designed in 1993 by Bruce Schneier and included in many cipher suites and encryption products. Blowfish provides
Blowfish_(cipher)
Short sequence of bytes used to authenticate or look up a longer public key
In public-key cryptography, a public key fingerprint is a short sequence of bytes used to identify a longer public key. Fingerprints are created by applying
Public_key_fingerprint
Collection of efficiently-computable functions which emulate a random oracle
the adversary can change the key-distribution depending on the values the hashing function has assigned to the previous keys, the adversary can not force
Pseudorandom_function_family
Computational benchmark
that one cannot classically efficiently sample from a distribution that is close to the distribution generated by the quantum experiment. For this conclusion
Quantum_supremacy
Algorithm that calculates all the round keys from the key
well-designed key schedules can reach a uniform distribution for the probabilities of differentials and linear hulls faster than those with poorly designed key schedules
Key_schedule
Quantum-safe key encapsulation mechanism
ML-KEM (Module-Lattice-Based Key-Encapsulation Mechanism), also known by its original name Kyber, is a key encapsulation mechanism (KEM) designed to be
ML-KEM
Method for dividing a secret among multiple parties
private keys is able to decrypt all of the outer layers to obtain X, the secret, and consequently this system is a secure secret distribution system.
Secret_sharing
Cryptographic algorithm for digital signatures
with elliptic-curve cryptography in general, the bit size of the private key believed to be needed for ECDSA is about twice the size of the security level
Elliptic Curve Digital Signature Algorithm
Elliptic_Curve_Digital_Signature_Algorithm
2015 password-based key derivation function
Argon2 is a key derivation function that was selected as the winner of the 2015 Password Hashing Competition. It was designed by Alex Biryukov, Daniel
Argon2
American electronic components distributor
and since the keyer wasn't selling well, he began selling the components themselves by mail order. This branched off into the distribution of other electronic
DigiKey
Cryptographic key management scheme
Unique Key Per Transaction (DUKPT) is a key management scheme in which for every transaction, a unique key is used which is derived from a fixed key. Therefore
Derived unique key per transaction
Derived_unique_key_per_transaction
Project by NIST to standardize post-quantum cryptography
quantum resistant, efforts have focused on public-key cryptography, namely digital signatures and key encapsulation mechanisms. In December 2016 NIST initiated
NIST Post-Quantum Cryptography Standardization
NIST_Post-Quantum_Cryptography_Standardization
Quantum cryptographic method
"The six-state protocol is a discrete-variable protocol for quantum key distribution that permits tolerating a noisier channel than the BB84 protocol."
Six-state_protocol
Quantum protocol without Bell theorem
BBM92 is a quantum key distribution (QKD) protocol named after Charles H. Bennett, Gilles Brassard and N. David Mermin in 1992. The BBM92 is an entanglement
BBM92_protocol
KEY DISTRIBUTION
KEY DISTRIBUTION
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.
Boy/Male
Indian
Key
Boy/Male
Gaelic
Son of Aidan.
Boy/Male
Bengali, English, Indian, Sindhi
Key
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.
Surname or Lastname
English and German
English and German : variant of Kay.Irish : reduced form of McKay.
Surname or Lastname
English
English : variant of Nye.Irish : reduced form of O’Ney.North German and Jewish (Ashkenazic) : variant of Neu. The Jewish surname may sometimes be a shortened form of a name such as Neuburger.German : habitational name from a place near Boppard.North German : nickname from Middle Low German ni(g)e, ney(g)e ‘(the) new one’.Dutch : from a short form of the personal name Aarnoud (see Arnold).Dutch (de Ney) : variant of Nay 3.
Male
Japanese
(1-æµ, 2-ä½³, 3-敬, 4-åœ, 5-æ…§) Japanese name KEI means 1) "blessed, lucky," 2) "excellent," 3) "respect," 4) "square jewel," or 5) "wise."
Surname or Lastname
English and Scottish
English and Scottish : variant of Kay.
Boy/Male
Arabic
Key; Opener
Boy/Male
Indian, Sanskrit, Tamil
Key; Love
Boy/Male
Christian, Gaelic, Indian
The One who Opens the Lock
Boy/Male
Muslim/Islamic
Key
Boy/Male
Arabic, Muslim
Key; Opener
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.
Male
Greek
(Κήυξ) Greek name, possibly KEYX means "kingfisher." In mythology, this is the name of a king of Thessaly, the son of Eosphoros.
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.
Girl/Female
American, British, Chinese, Dutch, English, Finnish, French, German, Greek, Hebrew, Latin, Scandinavian
Rejoiced; Short Form of Katherine and Other Names Beginning with K; Happy; Pure; Clear; Form of Katherine; Virginal; Keeper of the Keys; Elder Sister
Male
Turkish
Turkish name GÖKER means "man of the sky."
Boy/Male
Muslim
Key
KEY DISTRIBUTION
KEY DISTRIBUTION
Boy/Male
Hindu, Indian
Having Lighten / Bright Body
Boy/Male
Arabic, Muslim
Third
Surname or Lastname
English
English : from Cocke in any the senses described + the suffix -s denoting ‘son of’ or ‘servant of’.Irish (Ulster) : mistranslation of Mac Con Coille (‘son of Cú Choille’, a personal name meaning ‘hound of the wood’), as if formed with coileach ‘cock’, ‘rooster’.
Boy/Male
English
From Wine's hill.
Surname or Lastname
English
English : unexplained.Americanized spelling of German Kneip.
Boy/Male
Norse
Friend of wealth.
Male
Egyptian
, a son of Rameses III.
Boy/Male
Sikh
Kigh of peace and Love
Girl/Female
Tamil
Goddess Durga
Boy/Male
American, British, English
From the Dark Town
KEY DISTRIBUTION
KEY DISTRIBUTION
KEY DISTRIBUTION
KEY DISTRIBUTION
KEY DISTRIBUTION
n.
A key or scale closely related to another as principal; a relative or attendant key. [R.] See Attendant keys, under Attendant, a.
n.
A latch key.
a.
Cold as a metallic key; lifeless.
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.
See Key way, under Key.
v. t.
To fasten or secure firmly; to fasten or tighten with keys or wedges.
n.
An instrument which is turned like a key in fastening or adjusting any mechanism; as, a watch key; a bed key, etc.
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.
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.
p. pr. & vb. n.
of Key
n.
A key for opening more locks than one; a master key.
n.
See Key, a ledge.
a.
Furnished with keys; as, a keyed instrument; also, set to a key, as a tune.
v. t.
To form a key seat, as by cutting. See Key seat, under Key.
n.
An indehiscent, one-seeded fruit furnished with a wing, as the fruit of the ash and maple; a samara; -- called also key fruit.
v. t.
To change the key of.
n.
A key; a glossary.
n. pl.
See Kie, Ky, and Kine.
imp. & p. p.
of Key