Perimeter Defenses Fences Fences range from 1M to 2.4M with barbed wire on top and should be designed to steer ingress and egress to contolled points such as doors and gates. Gates Gates range from Class I gates (home) deter…
Cornerstone Cryptographic Concepts Cryptology – Science of secure communications. Encompasses both cryptography and cryptoanalysis Cryptography – Creates messages whose meaning is hidden Cryptoanalysis – Science of breaking encrypted messages Cipher – A cryptographic algorithm Plaintext – unencrypted message Encryption –…
Security Models Reading down and Writing Up Reading Down – Occurs when a subject reads an object at a lower sensitivity level. ie A top secret subject reading a secret object. Writing Up – At the expense of integrity, when…