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Security Dictionary
Can't tell 'smtp' from 'snmp'? Find the precise meaning of these and hundreds of other security-related terms in our convenient and up-to-date Security Dictionary.
data integrity service
(I) A security service that protects against unauthorized changes
to data, including both intentional change or destruction and
accidental change or loss, by ensuring that changes to data are
detectable. (See: data integrity.)
(C) A data integrity service can only detect a change and report
it to an appropriate system entity; changes cannot be prevented
unless the system is perfect (error-free) and no malicious user
has access. However, a system that offers data integrity service
might also attempt to correct and recover from changes.
(C) Relationship between data integrity service and authentication
services: Although data integrity service is defined separately
from data origin authentication service and peer entity
authentication service, it is closely related to them.
Authentication services depend, by definition, on companion data
integrity services. Data origin authentication service provides
verification that the identity of the original source of a
received data unit is as claimed; there can be no such
verification if the data unit has been altered. Peer entity
authentication service provides verification that the identity of
a peer entity in a current association is as claimed; there can be
no such verification if the claimed identity has been altered.
