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public key

nounid 3725·updated May 9, 2026
candidate

A cryptographic key, used with a public key cryptographic algorithm, that is uniquely associated with an entity and 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, for example, to: 1) Verify a digital signature that is signed by the corresponding private key, 2) Encrypt keys that can be decrypted by the corresponding private key, or 3) Compute a shared secret during a key-agreement transaction.

polysemousMWE

Classifications

Entity Type

Credential90%rule-basedr:entity.credential.cert.v1

Sensitivity

unclassified

Information Class

unclassified

Variants

plural
public keys
possessive
public key's
pluralpossessive
public keys'

Framework definitions

SANS Glossary of Security Terms1 senseview framework →
§1
The publicly-disclosed component of a pair of cryptographic keys used for asymmetric cryptography.
National Initiative for Cybersecurity Careers and Studies (NICCS) Cybersecurity Lexicon1 senseview framework →
§1 · extended_definition_available
A cryptographic key that may be widely published and is used to enable the operation of an asymmetric (public key) cryptographic algorithm.
Federal Financial Institutions Examination Council (FFIEC) IT Examination Handbook Infobase, Glossary1 senseview framework →
§1
See "PKI".
NISTIR 7298: Glossary of Key Information Security Terms, Revision 25 sensesview framework →
§1
The public part of an asymmetric key pair that is typically used to verify signatures or encrypt data.
§2 · sense_2_pending_review
A cryptographic key, used with a public key cryptographic algorithm, that is uniquely associated with an entity and 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, for example, to: 1) Verify a digital signature that is signed by the corresponding private key, 2) Encrypt keys that can be decrypted by the corresponding private key, or 3) Compute a shared secret during a key-agreement transaction.
§3 · sense_3_pending_review
A cryptographic key used with a public key cryptographic algorithm, uniquely associated with an entity, and which may be made public; it is used to verify a digital signature; this key is mathematically linked with a corresponding private key.
§4 · sense_4_pending_review
A cryptographic key used with a public key cryptographic algorithm that is uniquely associated with an entity and that may be made public.
§5 · sense_5_pending_review
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 (Glossary of Information Assurance Terms)1 senseview framework →
§1
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.
NIST SP 800-631 senseview framework →
§1
The public part of an asymmetric key pair that is typically used to verify signatures or encrypt data.
FIPS PUB 140-21 senseview framework →
§1
A cryptographic key used with a public key cryptographic algorithm that is uniquely associated with an entity and that may be made public.
FIPS PUB 2011 senseview framework →
§1
The public part of an asymmetric key pair that is typically used to verify signatures or encrypt data.
NIST SP 800-57 Part 11 senseview framework →
§1
A cryptographic key, used with a public key cryptographic algorithm, that is uniquely associated with an entity and 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, for example, to: 1) Verify a digital signature that is signed by the corresponding private key, 2) Encrypt keys that can be decrypted by the corresponding private key, or 3) Compute a shared secret during a key-agreement transaction.
FIPS PUB 1961 senseview framework →
§1
A cryptographic key used with a public key cryptographic algorithm, uniquely associated with an entity, and which may be made public; it is used to verify a digital signature; this key is mathematically linked with a corresponding private key.

Outgoing relationships

No outgoing triples
This term is not the subject of any RDF-style relationship yet.

Incoming relationships

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