A party that either (1) receives a public key; or (2) obtains assurance from an assurance provider (e.g., assurance of the validity of a candidate public key or assurance of possession of the private key corresponding to a public key); or (3) receives key confirmation from a key-confirmation provider.
Sources:
NIST SP 800-56B Rev. 2
under Recipient
Natural or legal person, public authority, agency, or any other body to whom data are disclosed.
Sources:
NIST SP 800-188
from
ISO/TS 25237:2008
natural or legal person, public authority, agency or any other body to whom data are disclosed
Sources:
NISTIR 8053
from
ISO/TS 25237:2008