root certificate authority

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Abbreviation(s) and Synonym(s):

None

Definition(s):

In a hierarchical public key infrastructure (PKI), the certification authority (CA) whose public key serves as the most trusted datum (i.e., the beginning of trust paths) for a security domain.
Source(s):
CNSSI 4009-2015 NIST SP 800-32

Glossary Comments

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See NISTIR 7298 Rev. 3 for additional details.

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root certificate authority

Glossary Comments