Ver:
·
Clave
1. Parámetro usado por un algoritmo para validar,
autenticar, cifrar o descifrar un mensaje (ISO-8732)
2. Sucesión de símbolos que controlan las
operaciones de cifrado y descifrado (ISO-7498-2). 3. Parámetro usado por un
algoritmo criptográfico para cifrar y descifrar datos, obtener la firma digital
de unos datos, verificar ésta o calcular un código de autenticación de mensajes
o una función resumen (FIPS 140-1).
A menudo se expresa simplemente mediante la palabra
clave.
[Ribagorda:1997]
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 into ciphertext data,
·
The
transformation of ciphertext data into plaintext data,
·
The
computation of a digital signature from data,
·
The
verification of a digital signature,
·
The
computation of an authentication code from data,
·
The
verification of an authentication code from data and a received authentication
code,
·
The
computation of a shared secret that is used to derive keying material.
[NIST-SP800-57:2007]
A sequence of symbols that
controls the operation of a cryptographic transformation.
EXAMPLE: A cryptographic
transformation may include but not limited to encipherment, decipherment,
cryptographic check function computation, signature generation, or signature
verification.
[ISO-19790:2006]
a parameter used in
conjunction with a cryptographic algorithm that determines
·
the
transformation of plaintext data into ciphertext data,
·
the
transformation of ciphertext data into plaintext data,
·
a digital
signature computed from data,
·
the
verification of a digital signature computed from data,
·
an
authentication code computed from data, or
·
an
exchange agreement of a shared secret.
[FIPS-140-2:2001]