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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
Number of bits in a key used by a cryptographic algorithm
of security inherent in the key length). Most symmetric-key algorithms are designed to have security equal to their key length. However, after design
Key_size
Cryptographic system with public and private keys
public-key cryptography in hybrid cryptosystems. Before the mid-1970s, all cipher systems used symmetric key algorithms, in which the same cryptographic key
Public-key_cryptography
Used for encoding or decoding ciphertext
processed through a cryptographic algorithm, can encode or decode cryptographic data. Based on the used method, the key can be different sizes and varieties
Key_(cryptography)
Standard for the encryption of electronic data
(DES), which was published in 1977. The algorithm described by AES is a symmetric-key algorithm, meaning the same key is used for both encrypting and decrypting
Advanced_Encryption_Standard
Cryptographic key management algorithm
Ratchet Algorithm's design is based on the DH ratchet that was introduced by Off-the-Record Messaging (OTR) and combines it with a symmetric-key ratchet
Double_Ratchet_Algorithm
Early unclassified symmetric-key block cipher
Standard (DES /ˌdiːˌiːˈɛs, dɛz/) is a symmetric-key algorithm for the encryption of digital data. Although its short key length of 56 bits makes it too insecure
Data_Encryption_Standard
Practice and study of secure communication techniques
types of cryptosystems: symmetric and asymmetric. In symmetric systems, the only ones known until the 1970s, the same secret key encrypts and decrypts a
Cryptography
wrapping key Symmetric key wrapping keys are used to encrypt other keys using symmetric key algorithms. Key wrapping keys are also known as key encrypting
Cryptographic_key_types
Algorithm for encrypting and decrypting information
same key is used for both encryption and decryption (symmetric key algorithms), or if a different key is used for each (asymmetric key algorithms). If
Cipher
Symmetric-key block cipher
International Data Encryption Algorithm (IDEA), originally called Improved Proposed Encryption Standard (IPES), is a symmetric-key block cipher designed by
International Data Encryption Algorithm
International_Data_Encryption_Algorithm
Management of cryptographic keys
types of keys, with some systems using more than one. These may include symmetric keys or asymmetric keys. In a symmetric key algorithm the keys involved
Key_management
Cryptographic key management scheme
stated above, the algorithm needs an initial single key which in the original description of the algorithm was called the super-secret key, but was later
Derived unique key per transaction
Derived_unique_key_per_transaction
Message-digest hashing algorithm
particular key in a partitioned database, and may be preferred due to lower computational requirements than more recent Secure Hash Algorithms. MD5 is one
MD5
Method of exchanging cryptographic keys
Diffie–Hellman (DH) key exchange is a mathematical method of securely generating a symmetric cryptographic key over a public channel and was one of the
Diffie–Hellman_key_exchange
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)
Information used for message authentication and integrity checking
generation algorithm selects a key from the key space uniformly at random. A MAC generation algorithm efficiently returns a tag given the key and the message
Message_authentication_code
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
Cryptographic algorithm for digital signatures
cryptography, the Elliptic Curve Digital Signature Algorithm (ECDSA) offers a variant of the Digital Signature Algorithm (DSA) which uses elliptic-curve cryptography
Elliptic Curve Digital Signature Algorithm
Elliptic_Curve_Digital_Signature_Algorithm
Encrypted information
Private-key cryptography (symmetric key algorithm): one shared key is used for encryption and decryption Public-key cryptography (asymmetric key algorithm):
Ciphertext
Public-key cryptosystem
which can be arbitrarily large, with a symmetric cipher, and then use ElGamal only to encrypt the symmetric key, which usually is quite small compared
ElGamal_encryption
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
Block cipher
In cryptography, the Tiny Encryption Algorithm (TEA) is a block cipher notable for its simplicity of description and implementation, typically a few lines
Tiny_Encryption_Algorithm
Computer communications authentication algorithm
outer. Next, the first pass of the hash algorithm produces an internal hash derived from the message and the inner key. The second pass produces the final
HMAC
Block cipher
In cryptography, Twofish is a symmetric key block cipher with a block size of 128 bits and key sizes up to 256 bits. It was one of the five finalists of
Twofish
Measure of cryptographic strength
considered broken. Symmetric algorithms usually have a strictly defined security claim. For symmetric ciphers, it is typically equal to the key size of the cipher
Security_level
Secure communication method
key. In real-world situations, it is often also used with encryption using symmetric key algorithms like the Advanced Encryption Standard algorithm.
Quantum_key_distribution
Cryptographic protocol
conversations. OTR uses a combination of AES symmetric-key algorithm with 128 bits key length, the Diffie–Hellman key exchange with 1536 bits group size, and
Off-the-Record Messaging protocol
Off-the-Record_Messaging_protocol
Cipher machines used by the German Army during World War II
subtraction (without 'borrow'). Vernam's cipher is a symmetric-key algorithm, i.e. the same key is used both to encipher plaintext to produce the ciphertext
Lorenz_cipher
Stream cipher
bits is generated using the pseudo-random generation algorithm (PRGA). The key-scheduling algorithm is used to initialize the permutation in the array "S"
RC4
Message sent to a certificate authority to apply for a certificate
signature algorithm identifier, and a digital signature on the certification request information using the private key related to the public key being certified
Certificate_signing_request
Free and open-source disk encryption utility
there is some degradation in the memory contents, various algorithms may be able to recover the keys. This method, known as a cold boot attack, which would
VeraCrypt
Random data used as an additional input to a hash function
remains worthwhile to ensure that the security of the password hashing algorithm, including the generation of unique salt values, is adequate.[citation
Salt_(cryptography)
Data encryption and authentication program
symmetric-key encryption and public-key encryption. The message is encrypted using a symmetric encryption algorithm, which requires a symmetric key generated
Pretty_Good_Privacy
Block cipher
Triple Data Encryption Algorithm (TDEA or Triple DEA), is a symmetric-key block cipher, which applies the DES cipher algorithm three times to each data
Triple_DES
Password cracking dataset
invented by Philippe Oechslin as an application of an earlier, simpler algorithm by Martin Hellman. For user authentication, passwords are stored either
Rainbow_table
(AES). Ronald L. Rivest, US, MIT, inventor of RC cipher series and MD algorithm series. Bruce Schneier, US, inventor of Blowfish and co-inventor of Twofish
List_of_cryptographers
Hash functions
a general purpose key-less hash function such as Secure Hash Algorithms (SHA) and therefore must always be used with a secret key in order to be secure
SipHash
Digital signature scheme
Schnorr signature is a digital signature produced by the Schnorr signature algorithm that was invented by Claus Schnorr. It is known for its simplicity, among
Schnorr_signature
Digital verification standard
The Digital Signature Algorithm (DSA) is a public-key cryptosystem and Federal Information Processing Standard for digital signatures, based on the mathematical
Digital_Signature_Algorithm
just as strong) symmetric key. The slower asymmetric algorithm securely sends a symmetric session key, and the faster symmetric algorithm takes over for
History_of_cryptography
Suite of cryptographic algorithms needed to implement a particular security service
confidentiality (encryption). Typically, a cryptosystem consists of three algorithms: one for key generation, one for encryption, and one for decryption. The term
Cryptosystem
Cryptographic primitives that involve lattices
public-key schemes such as the RSA, Diffie-Hellman or elliptic-curve cryptosystems—which could, theoretically, be defeated using Shor's algorithm on a quantum
Lattice-based_cryptography
Method for dividing a secret among multiple parties
dispersal algorithm (IDA) with Shamir's secret sharing. Data is first encrypted with a randomly generated key, using a symmetric encryption algorithm. Next
Secret_sharing
System that regulates the formation of blocks on a blockchain
specification "The scrypt Password-Based Key Derivation Function," Scrypt was designed as a memory-intensive algorithm, requiring a moderate amount of RAM
Proof_of_work
Process of converting plaintext to ciphertext
cryptographic algorithms often use simple modular arithmetic in their implementations. In symmetric-key schemes, the encryption and decryption keys are the
Encryption
Block cipher
In cryptography, RC6 is a symmetric key block cipher derived from RC5. It was designed by Ron Rivest, Matt Robshaw, Ray Sidney, and Yiqun Lisa Yin to
RC6
Attack against cryptographical hash functions
hashing algorithm at that point, input the last few characters, and generate a new digest which can sign his new message without the original key. New Signature:
Length_extension_attack
Block cipher
In cryptography, RC5 is a symmetric-key block cipher notable for its simplicity. Designed by Ronald Rivest in 1994, According to Ron Rivest, RC stands
RC5
Set of cryptographic algorithms by the NSA
The Commercial National Security Algorithm Suite (CNSA) is a set of cryptographic algorithms promulgated by the National Security Agency as a replacement
Commercial National Security Algorithm Suite
Commercial_National_Security_Algorithm_Suite
Simple encryption method
effectively has no key, and decryption requires no more knowledge than the fact that ROT13 is in use. Even without this knowledge, the algorithm is easily broken
ROT13
Early block substitution cipher
Playfair cipher or Playfair square or Wheatstone–Playfair cipher is a manual symmetric encryption technique and was the first literal digram substitution cipher
Playfair_cipher
Type of cipher
paired algorithms, one for encryption, E, and the other for decryption, D. Both algorithms accept two inputs: an input block of size n bits and a key of size
Block_cipher
analysis Contact analysis Index of coincidence Kasiski examination Symmetric algorithms Boomerang attack Brute force attack Davies' attack Differential cryptanalysis
Outline_of_cryptography
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
Basic cryptographic algorithm used to build cryptographic protocols
message (e.g., SHA-256) Symmetric key cryptography—compute a ciphertext decodable with the same key used to encode (e.g., AES) Public-key cryptography—compute
Cryptographic_primitive
Type of symmetric key cipher
A stream cipher is a symmetric key cipher where plaintext digits are combined with a pseudorandom cipher digit stream (keystream). In a stream cipher
Stream_cipher
Hiding messages in other messages
unnoticed. Steganalysis that targets a particular algorithm has much better success as it is able to key in on the anomalies that are left behind. This is
Steganography
System that can issue, distribute and verify digital certificates
public key—methods, whereas actual communication uses faster symmetric key—i.e., secret key—methods; Mobile signatures are electronic signatures that are
Public_key_infrastructure
Cryptographic hash function
diffusion matrix was found that lowered the estimated security of the algorithm below its potential. Changing the 8x8 rotating matrix constants from (1
Whirlpool_(hash_function)
Process of generating keys in cryptography
generate keys is called a key generator or keygen. Modern cryptographic systems include symmetric-key algorithms (such as DES and AES) and public-key algorithms
Key_generation
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
Authenticated encryption with associated data algorithm
ChaCha20-Poly1305 is an authenticated encryption with associated data (AEAD) algorithm, that combines the ChaCha20 stream cipher with the Poly1305 message authentication
ChaCha20-Poly1305
Cryptographic attack
for the square-and-multiply algorithm used in modular exponentiation depends linearly on the number of '1' bits in the key. While the number of '1' bits
Timing_attack
Password-based key derivation function
developed a new key setup algorithm for Blowfish, dubbing the resulting cipher "Eksblowfish" ("expensive key schedule Blowfish"). The key setup begins with
Bcrypt
Cryptanalytic method for unauthorized users to access data
modern symmetric algorithms typically use computationally stronger 128- to 256-bit keys. There is a physical argument that a 128-bit symmetric key is computationally
Brute-force_attack
System to replace plaintext with ciphertext
units of the plaintext (its input) in a defined manner, with the help of a key; the "units" may be single letters (the most common), pairs of letters, triplets
Substitution_cipher
Cryptographic hash function
candidates but lost to Keccak in 2012, which was selected for the SHA-3 algorithm. Like SHA-2, BLAKE comes in two variants: one that uses 32-bit words,
BLAKE_(hash_function)
Surveillance strategy
algorithms to mitigate these threats. This new version of Commercial National Security Algorithm Suite uses publicly-available algorithms and is
Harvest_now,_decrypt_later
Method to set encryption keys
shared secret, the key derivation function is typically used. Such systems almost always use symmetric key cryptographic algorithms. The term PSK is used
Pre-shared_key
Stream ciphers
project, receiving the highest weighted voting score of any Profile 1 algorithm at the end of Phase 2. Salsa20 had previously been selected as a Phase
Salsa20
Techniques to protect against brute-force attack
attacks by memory-bound adversaries. Key stretching algorithms depend on an algorithm which receives an input key and then expends considerable effort
Key_stretching
Authenticated encryption mode for block ciphers
operation for cryptographic block ciphers. It is an authenticated encryption algorithm designed to provide both authentication and confidentiality. CCM mode
CCM_mode
Cryptographic secret, not public in contrast to salt
attacker knows a plaintext password and a user's salt, as well as the algorithm used to hash the password, then discovering the pepper can be a matter
Pepper_(cryptography)
Cryptography construction
cryptography, a Feistel cipher (also known as Luby–Rackoff block cipher) is a symmetric structure used in the construction of block ciphers, named after the German-born
Feistel_cipher
Term applied to cryptographic systems that are highly resistant to cryptanalysis
1999[update] any implementation of the symmetric encryption algorithm with the key length above 56 bits or its public key equivalent to be strong and thus potentially
Strong_cryptography
Cryptographic attack
hash(p2 ∥ s2), where ∥ denotes the concatenation operation. Much like symmetric-key ciphers are vulnerable to brute force attacks, every cryptographic hash
Collision_attack
Project by NIST to standardize post-quantum cryptography
used RSA algorithm insecure by 2030. As a result, a need to standardize quantum-secure cryptographic primitives was pursued. Since most symmetric primitives
NIST Post-Quantum Cryptography Standardization
NIST_Post-Quantum_Cryptography_Standardization
Input to a cryptographic primitive
single invocation of the AES algorithm transforms a 128-bit plaintext block into a ciphertext block of 128 bits in size. The key, which is given as one input
Initialization_vector
Digital signature scheme
three functions: generate, sign, and verify. Key generation The key generation algorithm selects the private key by picking a random integer x ∈ [ 0 , q −
BLS_digital_signature
Hybrid encryption in cryptography
{\displaystyle g^{y}} . Alice then computes a symmetric key k {\displaystyle k} using this information and a key derivation function (KDF) as follows: k =
Integrated_Encryption_Scheme
Basic component of symmetric key algorithms
component of symmetric key algorithms which performs substitution. In block ciphers, they are typically used to obscure the relationship between the key and the
S-box
International standard
Cryptographic Message Syntax (CMS), in use) RFC 9629 (Using Key Encapsulation Mechanism (KEM) Algorithms in the Cryptographic Message Syntax (CMS), in use) CAdES
Cryptographic_Message_Syntax
Darknet anonymity network
uses a hybrid shuffle, consisted of a verifiable shuffle and a symmetric-key algorithm. The Hybrid Shuffle protocol consists of a setup phase and a transmission
Riffle_(anonymity_network)
Type of cryptographic attack
contract, not just the fraudulent one. Pollard's rho algorithm for logarithms is an example for an algorithm using a birthday attack for the computation of
Birthday_attack
Type of functions designed for being unsolvable by root-finding algorithms
DUHK (Don't Use Hard-coded Keys) attack on WPA2 where hardware vendors use a hardcoded seed key for the ANSI X9.31 RNG algorithm, stating "an attacker can
Cryptographically secure pseudorandom number generator
Cryptographically_secure_pseudorandom_number_generator
Set of cryptographic hash functions
SHA-2 (Secure Hash Algorithm 2) is a set of cryptographic hash functions designed by the United States National Security Agency (NSA) and first published
SHA-2
Property of some cryptosystems
definition is specific to an asymmetric-key cryptosystem, it can be adapted to the symmetric case by replacing the public-key encryption function with an encryption
Ciphertext indistinguishability
Ciphertext_indistinguishability
Block cipher
'Grasshopper'; Cyrillic script: Кузнечик) is a symmetric block cipher. It has a block size of 128 bits and key length of 256 bits. It is defined in the National
Kuznyechik
Any attack based on information gained from the implementation of a computer system
; Ravi Prakash Giri; Bernard Menezes (2016). "Highly Efficient Algorithms for AES Key Retrieval in Cache Access Attacks". 2016 IEEE European Symposium
Side-channel_attack
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
Cryptography method
proving the security of practical cryptosystems. In the case of symmetric-key algorithm cryptosystems, an adversary must not be able to compute any information
Semantic_security
Ability to easily switch cryptographic primitives
solutions should be kept in mind. Symmetric-key algorithms should be flexible in their key lengths. Hash algorithms should support different lengths of
Cryptographic_agility
Approach to public-key cryptography
combining the key agreement with a symmetric encryption scheme. They are also used in several integer factorization algorithms that have applications in cryptography
Elliptic-curve_cryptography
Adding data to a message prior to encryption to hide its length
Some block cipher modes (CBC and PCBC essentially) for symmetric-key encryption algorithms require plain text input that is a multiple of the block
Padding_(cryptography)
Cryptographic method
keys. If the cipher is a symmetric key cipher, both will need a copy of the same key. If it is an asymmetric key cipher with the public/private key property
Key_exchange
Chinese block cipher
The algorithm was declassified in January, 2006, and it became a national standard (GB/T 32907-2016) in August 2016. The SM4 cipher has a key size and
SM4_(cipher)
Discontinued source-available disk encryption utility
is some degradation in the memory contents, various algorithms can intelligently recover the keys. This method, known as a cold boot attack (which would
TrueCrypt
Overview of and topical guide to algorithms
to algorithms: An algorithm is a finite, well-defined sequence of instructions or rules for solving a problem or performing a computation. Algorithms are
Outline_of_algorithms
Mathematical scheme for verifying the authenticity of digital documents
consists of three algorithms: A key generation algorithm that selects a private key at random from a set of possible private keys. The algorithm outputs the
Digital_signature
SYMMETRIC KEY-ALGORITHM
SYMMETRIC KEY-ALGORITHM
Boy/Male
Gaelic
Son of Aidan.
Boy/Male
Indian, Sanskrit, Tamil
Key; Love
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.
Male
Turkish
Turkish name GÖKER means "man of the sky."
Boy/Male
Christian, Gaelic, Indian
The One who Opens the Lock
Male
Greek
(Κήυξ) Greek name, possibly KEYX means "kingfisher." In mythology, this is the name of a king of Thessaly, the son of Eosphoros.
Surname or Lastname
English and German
English and German : variant of Kay.Irish : reduced form of McKay.
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
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.
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.
Girl/Female
African, Arabic, Muslim, Swahili
Symmetry
Boy/Male
Muslim/Islamic
Key
Surname or Lastname
English and Scottish
English and Scottish : variant of Kay.
Boy/Male
Muslim
Key
Boy/Male
Tamil
Symmetry, Harmony
Boy/Male
Indian
Key
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.
Boy/Male
Bengali, English, Indian, Sindhi
Key
Boy/Male
Hindu
Symmetry, Harmony
Boy/Male
Sikh
Symmetry, Harmony
SYMMETRIC KEY-ALGORITHM
SYMMETRIC KEY-ALGORITHM
Boy/Male
Arabic
Accomplishes; Success; Salvation
Girl/Female
Hindu, Indian, Traditional
Draupadi
Female
Hungarian
Feminine form of Hungarian Anasztáz, ANASZTÃZIA means "resurrection."
Girl/Female
Indian
Chief, Leader, Lady
Boy/Male
Hindu, Indian, Kannada, Marathi, Sanskrit, Telugu
Wise
Surname or Lastname
English
English : habitational name for someone from a place in East Yorkshire called Wauldby (recorded in Domesday Book as Walbi ‘(village) on the wold’) or from Walby in Cumbria (‘(village) by the (Roman) wall’).
Girl/Female
Hindu
One who lives
Girl/Female
Tamil
Childs plaything
Girl/Female
Assamese, Bengali, Gujarati, Hindu, Indian, Jain, Kannada, Malayalam, Marathi, Oriya, Punjabi, Sanskrit, Sikh, Tamil, Telugu, Traditional
Peace
Girl/Female
Indian, Sikh
A Prize from God; Precious; Priceless
SYMMETRIC KEY-ALGORITHM
SYMMETRIC KEY-ALGORITHM
SYMMETRIC KEY-ALGORITHM
SYMMETRIC KEY-ALGORITHM
SYMMETRIC KEY-ALGORITHM
a.
Exhibiting pseudo-symmetry.
v. t.
To make proportional in its parts; to reduce to symmetry.
a.
Cold as a metallic key; lifeless.
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.
The law of likeness; similarity of structure; regularity in form and arrangement; orderly and similar distribution of parts, such that an animal may be divided into parts which are structurally symmetrical.
n.
One eminently studious of symmetry of parts.
n.
An instrument which is turned like a key in fastening or adjusting any mechanism; as, a watch key; a bed key, etc.
a.
Involving or exhibiting symmetry; proportional in parts; having its parts in due proportion as to dimensions; as, a symmetrical body or building.
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 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.
a.
Symmetrical.
n.
A key or scale closely related to another as principal; a relative or attendant key. [R.] See Attendant keys, under Attendant, a.
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.
a.
Commensurable; symmetrical.
n.
See Key way, under Key.
n.
A key for opening more locks than one; a master key.
n.
One eminently studious of symmetry of parts.
v. t.
To form a key seat, as by cutting. See Key seat, under Key.
v. t.
To fasten or secure firmly; to fasten or tighten with keys or wedges.
a.
Having the organs or parts of one side corresponding with those of the other; having the parts in two or more series of organs the same in number; exhibiting a symmetry. See Symmetry, 2.