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Trusted Third Party (TTP)

Abbreviation(s) and Synonym(s):

Definition(s):

  An entity other than the owner and verifier that is trusted by the owner, the verifier or both to provide certain services.
Source(s):
NIST SP 800-89

  A third party, such as a CA, that is trusted by its clients to perform certain services. (By contrast, the two participants in a key-establishment transaction are considered to be the first and second parties.)
Source(s):
NIST SP 800-56B Rev. 2 under Trusted third party

  A third party, such as a CA, that is trusted by its clients to perform certain services. (By contrast, in a key establishment transaction, the participants, parties U and V, are considered to be the first and second parties.)
Source(s):
NIST SP 800-56A Rev. 2 [Superseded] under Trusted third party

  A third party, such as a CA, that is trusted by its clients to perform certain services. (By contrast, for example, the sender and receiver in a scheme are considered to be the first and second parties in a key-establishment transaction).
Source(s):
NIST SP 800-56B Rev. 1 [Superseded] under Trusted third party