A parameter used in conjunction with a cryptographic algorithm that determines its operation.
Examples applicable to this Standard include:
1. The computation of a digital signature from data, and
2. The verification of a digital signature.
Sources:
FIPS 186-5
under Key
NIST SP 800-12 Rev. 1
under Key
A parameter used in conjunction with a cryptographic algorithm that determines the specific operation of that algorithm.
Sources:
FIPS 201-3
under Cryptographic Key
The parameter of a block cipher that determines the selection of a permutation from the block cipher family.
Sources:
FIPS 197
[NIST FIPS 197-upd1]
under Key
A parameter used in conjunction with a cryptographic algorithm that determines the specific operation of that algorithm.
Sources:
NIST SP 1800-12b
under cryptographic key (key)
A parameter used in conjunction with a cryptographic algorithm that determines its operation. Examples applicable to this Recommendation include: 1. The computation of a digital signature from data, and 2. The verification of a digital signature.
Sources:
NIST SP 800-102
under Key
A parameter used with a cryptographic algorithm that determines its operation in such a way that an entity with knowledge of the key can reproduce or reverse the operation, while an entity without knowledge of the key cannot. Examples applicable to this Recommendation include:
1. The computation of a keyed-hash message authentication code.
2. The verification of a keyed-hash message authentication code.
3. The generation of a digital signature on a message.
4. The verification of a digital signature.
Sources:
NIST SP 800-107 Rev. 1
under Key
A parameter used in conjunction with a cryptographic algorithm that determines the algorithm’s operation in such a way that an entity with knowledge of the key can reproduce or reverse the operation, while an entity without knowledge of the key cannot. Examples include:
1. The transformation of plaintext data into ciphertext data,
2. The transformation of ciphertext data into plaintext data,
3. The computation of a digital signature from data,
4. The verification of a digital signature,
5. The computation of an authentication code from data,
6. The verification of an authentication code from data and a received authentication code.
Sources:
NIST SP 800-135 Rev. 1
under Cryptographic key (key)
A parameter that determines the transformation from plaintext to ciphertext and vice versa. (A DEA key is a 64-bit parameter consisting of 56 independent bits and 8 parity bits). Multiple (1, 2 or 3) keys may be used in the Triple Data Encryption Algorithm.
Sources:
NIST SP 800-20
under Cryptographic key
A parameter used in the block cipher algorithm that determines the forward cipher operation and the inverse cipher operation.
Sources:
NIST SP 800-38A
under Cryptographic Key
The parameter of the block cipher that determines the selection of the forward cipher function from the family of permutations.
Sources:
NIST SP 800-38D
under Key
A parameter used in the block cipher algorithm that determines the forward cipher function.
Sources:
NIST SP 800-38C
under Cryptographic Key
A parameter used with a cryptographic algorithm that determines its operation.
Sources:
NIST SP 800-56B Rev. 2
under Cryptographic key (Key)
A value used to control cryptographic operations, such as decryption, encryption, signature generation, or signature verification. For the purposes of these guidelines, key requirements shall meet the minimum requirements stated in Table 2 of NIST SP 800-57 Part 1.
See also Asymmetric Keys, Symmetric Key.
Sources:
NIST SP 800-63-3
under Cryptographic Key
A parameter that determines the transformation using DEA and TDEA forward and inverse operations.
Sources:
NIST SP 800-67 Rev. 2
under Cryptographic Key
A parameter used in conjunction with a cryptographic algorithm that determines its operation in such a way that an entity with knowledge of the key can reproduce the operation, while an entity without knowledge of the key cannot. Examples of the use of a key that are applicable to this Recommendation include: 1. The computation of a digital signature from data, and 2. The verification of a digital signature.
Sources:
NIST SP 800-89
under Key
A parameter that determines the operation of a cryptographic function, such as:
1. The transformation from plaintext to ciphertext and vice versa,
2. The generation of keying material, or
3. A digital signature computation or verification.
Sources:
NIST SP 800-90A Rev. 1
under Cryptographic Key (Key)
A parameter used in conjunction with a cryptographic algorithm that determines its operation in such a way that an entity with knowledge of the key can reproduce or reverse the operation, while an entity without knowledge of the key cannot. Examples include: The transformation of plaintext data inot cipertext data, the transformation of ciphertext into plaintext data, The computation of a digital signautre from data, The verification of a digital signautre, The computation of an authentication code from data, The computation of a shared secret that is used to derive keying material.
Sources:
NIST SP 800-57 Part 2 Rev.1
under Cryptographic key (key)
See cryptographic key.
Sources:
NIST SP 800-133 Rev. 2
under Key
NIST SP 800-175B Rev. 1
under Key
NIST SP 800-20
under Key
NIST SP 800-57 Part 1 Rev. 5
under Key
NIST SP 800-67 Rev. 2
under Key
NIST SP 800-90A Rev. 1
under Key
A value used to control cryptographic operations, such as decryption, encryption, signature generation, or signature verification. For the purposes of these guidelines, key requirements shall meet the minimum requirements stated in Table 2 of NIST SP 800-57 Part 1.
See also Asymmetric Keys, Symmetric Key.
Sources:
NIST SP 800-63-3
under Cryptographic Key
A parameter used in conjunction with a cryptographic algorithm that determines its operation in such a way that an entity with knowledge of the key can reproduce or reverse the operation while an entity without knowledge of the key cannot. Examples include 1. The transformation of plaintext data into ciphertext data, 2. The transformation of ciphertext data into plaintext data, 3. The computation of a digital signature from data, 4. The verification of a digital signature, 5. The computation of a message authentication code (MAC) from data, 6. The verification of a MAC received with data, 7. The computation of a shared secret that is used to derive keying material.
Sources:
NIST SP 800-175B Rev. 1
under Cryptographic key
A parameter used in conjunction with a cryptographic algorithm that determines its operation in such a way that an entity with knowledge of the key can reproduce, reverse or verify the operation while an entity without knowledge of the key cannot. Examples include: 1. The transformation of plaintext data into ciphertext data, 2. The transformation of ciphertext data into plaintext data, 3. The computation of a digital signature from data, 4. The verification of a digital signature on data, 5. The computation of an authentication code from data, 6. The verification of an authentication code from data and a received or retrieved authentication code, and 7. The computation of a shared secret that is used to derive keying material.
Sources:
NIST SP 800-57 Part 1 Rev. 5
under Cryptographic key (key)
A parameter used in conjunction with a cryptographic algorithm that determines its operation in such a way that an entity with knowledge of the correct key can reproduce or reverse the operation, while an entity without knowledge of the key cannot. Examples of cryptographic operations requiring the use of cryptographic keys include:
1. The transformation of plaintext data into ciphertext data,
2. The transformation of ciphertext data into plaintext data,
3. The computation of a digital signature from data,
4. The verification of a digital signature,
5. The computation of a message authentication code (MAC) from data,
6. The verification of a MAC from data and a received MAC,
7. The computation of a shared secret that is used to derive keying material, and
8. The derivation of additional keying material from a keyderivation key (e.g., a pre-shared key).
The specification of a cryptographic algorithm (as employed in a particular application) typically declares which of its parameters are keys.
Sources:
NIST SP 800-133 Rev. 2
under Cryptographic key (key)
A value used to control cryptographic operations, such as decryption, encryption, signature generation, or signature verification.
Sources:
NIST SP 1800-21B
under Cryptographic Key
from
NIST SP 800-63-3
A bit string used as a secret parameter by a cryptographic algorithm. In this Recommendation, a cryptographic key is either a random bit string of a length specified by the cryptographic algorithm or a pseudorandom bit string of the required length that is computationally indistinguishable from one selected uniformly at random from the set of all bit strings of that length.
Sources:
NIST SP 800-108r1
[August 2022 (Includes updates as of 02-02-2024)]
A parameter used with a cryptographic algorithm that determines its operation.
Sources:
NIST SP 800-56C Rev. 2
under Cryptographic key
A cryptographic key. In this document, keys generally refer to public key cryptography key pairs used for authentication of users and/or machines (using digital signatures). Examples include identity key and authorized keys. The SSH protocol also uses host keys that are used for authenticating SSH servers to SSH clients connecting them.
Sources:
NISTIR 7966
under Key