Clave pública

Ver:

·         Par asimétrico de claves

·         Clave

·         Clave criptográfica

clave pública

(En un critposistema de claves públicas) clave de un par de claves de usuario que es conocida públicamente. [X.509:2005]

Clave pública

En un criptosistema asimétrico, clave criptográfica de un usuario que se hace de público conocimiento (ISO/IEC 9594-2, ITU-T X.509). [Ribagorda:1997]

clave pública

Clave que se utiliza con un algoritmo criptográfico asimétrico y que puede estar disponible públicamente. [X.810:1995]

(en) public key

A cryptographic key that may be widely published and is used to enable the operation of an asymmetric cryptography scheme. This key is mathematically linked with a corresponding private key. Typically, a public key can be used to encrypt, but not decrypt, or to validate a signature, but not to sign. [CNSSI_4009:2010]

(en) public key

1. (I) The publicly disclosable component of a pair of cryptographic keys used for asymmetric cryptography. (See: key pair. Compare: private key.)

2. (O) In a public key cryptosystem, "that key of a user's key pair which is publicly known." [X509]

[RFC4949:2007]

(en) Public key

A cryptographic key used with a public key cryptographic algorithm that is uniquely associated with an entity and that may be made public.  In an asymmetric (public) cryptosystem, the public key is associated with a private key. The public key may be known by anyone and, depending on the algorithm, may be used to:

·         Verify a digital signature that is signed by the corresponding private key,

·         Encrypt data that can be decrypted by the corresponding private key, or

·         Compute a piece of shared data.

[NIST-SP800-57:2007]

(en) public key

that key of an entitys asymmetric key pair which can be made public [ISO/IEC ISO-11770-1:1996]. [ISO-18033-1:2005]

(en) Public Key

(In a public key cryptosystem) that key of a user's key pair which is publicly known. [X.509:2005]

(en) Public key or public number

That data item, key or number, of an asymmetric pair, that can be made public and shall be used by every verifier for establishing the claimant's identity. [ISO-9798-5:2004]

(en) Public key

that key of an entity's asymmetric key pair which can be made public.

NOTE. In the case of an asymmetric signature system the public key defines the verification transformation. In the case of an asymmetric encipherment system the public key defines the encipherment transformation. A key that is 'publicly known' is not necessarily globally available. The key may only be available to all members of a pre-specified group.

[ISO-11770-3:2008]

(en) Public key

That key of an entity's asymmetric key pair which can be made public.

NOTE. In the case of an asymmetric signature system, the public key defines the verification transformation. In the case of an asymmetric encipherment system the public key defines the encipherment transformation. A key that is 'publicly known' is not necessarily globally available. The key may only be available to all members of a pre-specified group.

[ISO-9798-1:1997]

(en) Public Key

A key that is used with an asymmetric cryptographic algorithm and that can be made publicly available. [X.810:1995]

(fr) clé publique

(dans un système de chiffrement avec clé publique) celle des clés d'une paire de clés d'un utilisateur qui est connue de manière publique. [X.509:2005]

(fr) Clé publique

Une des deux clés du couple clé publique/clé privée rendue publique et connue par tous. Elle intervient dans le mécanisme de chiffrement et permet de chiffrer électroniquement des messages à l'intention du détenteur de cette clef, message qui sera ensuite déchiffré par la clé privée. [ISO-9798-1:1997]

(fr) clé publique

clé qui est utilisée avec un algorithme asymétrique de cryptographie et qui peut être rendue publique. [X.810:1995]

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