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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.
key establishment (algorithm or protocol)
(I) A process that combines the key generation and key
distribution steps needed to set up or install a secure
communication association. (See: key agreement, key transport.)
(O) "The procedure to share a symmetric key among different
parties by either key agreement or key transport." [A9042]
(C) Key establishment involves either key agreement or key
transport:
- Key transport: One entity generates a secret key and securely
sends it to the other entity. (Or each entity generates a
secret value and securely sends it to the other entity, where
the two values are combined to form a secret key.)
- Key agreement: No secret is sent from one entity to another.
Instead, both entities, without prior arrangement except a
public exchange of data, compute the same secret value. I.e.,
each can independently generate the same value, but that value
cannot be computed by other entities.
