| (I) Verify (i.e., establish the truth of) an identity claimed by
or for a system entity. (See: authentication.)
(D) In general English usage, this term usually means "to prove
genuine" (e.g., an art expert authenticates a Michelangelo
painting). But the recommended definition carries a much narrower
meaning. For example, to be precise, an ISD SHOULD NOT say "the
host authenticates each received datagram". Instead, the ISD
SHOULD say "the host authenticates the origin of each received
datagram". In most cases, we also can say "and verifies the
datagram's integrity", because that is usually implied. (See:
("relationship between data integrity service and authentication
services" under) data integrity service.)
(D) ISDs SHOULD NOT talk about authenticating a digital signature
or digital certificate. Instead, we "sign" and then "verify"
digital signatures, and we "issue" and then "validate" digital
certificates. (See: validate vs. verify.)
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