Introduction to ciphers and substitution. Alice and Bob and Carl and Julius: terminology and Caesar Cipher ; The key to the matter: generalizing the Caesar Cipher ; Multiplicative ciphers ; Affine ...

The Cupertino, Calif.-based company launched this month with a virtual appliance that can be used on-premise or in the cloud to encrypt sensitive data before it reaches the cloud. And unlike other ...

The NSA Report: Liberty and Security in a Changing World is out, suggesting 46 specific actions the US government can take to make sure nothing like the Snowden debacle ever happens again. The ideas ...