Editing Communications security (section)

== Specialties ==
* '''Cryptographic security''': The component of communications security that results from the provision of technically sound [[cryptography|cryptosystems]] and their proper use.  This includes ensuring message confidentiality and authenticity.
* '''[[Tempest (codename)|Emission security]] (EMSEC)''': The protection resulting from all measures taken to deny unauthorized persons information of value that might be derived from communications systems and cryptographic equipment intercepts and the interception and analysis of compromising emanations from cryptographic equipment, information systems, and telecommunications systems.<ref name=":0">{{cite web |url=http://static.e-publishing.af.mil/production/1/afisra/publication/afisrai33-203/afisrai33-203.pdf |title=AIR FORCE AIR INTELLIGENCE, SURVEILLANCE AND RECONNAISSANCE AGENCY INSTRUCTION 33-203 |date=May 25, 2011 |work=The Air Force ISR Agency Tempest and Emission Security Program |publisher=[[Air Force Intelligence, Surveillance and Reconnaissance Agency]] |archive-url=https://web.archive.org/web/20131020063028/http://static.e-publishing.af.mil/production/1/afisra/publication/afisrai33-203/afisrai33-203.pdf |archive-date=October 20, 2013 |url-status=dead |access-date=October 3, 2015 }}</ref>
* '''[[Transmission security]] (TRANSEC)''': The component of communications security that results from the application of measures designed to protect transmissions from interception and exploitation by means other than [[cryptanalysis]] (e.g. [[frequency hopping]] and [[spread spectrum]]).
* '''Physical security''': The component of communications security that results from all [[physical security|physical measures]] necessary to safeguard classified equipment, material, and documents from [[Access control|access]] thereto or observation thereof by unauthorized persons.