Security Association definition in Computer Security terms:
Definition(s): A relationship established between two or more entities to enable them to protect data they exchange.
Source(s): CNSSI 4009-2015
A relationship between two network entities in which security information is shared and used to support secure communication between the two entities.
Source(s): NIST SP 800-57 Part 3 Rev. 1
Set of values that define the features and protections applied to a connection.
Source(s): NIST SP 800-77
The logical set of security parameters containing elements required for authentication, key establishment, and data encryption.
Source(s): NIST SP 800-127
reference: CSRC Glossary