Effective Secrecy: Reliability, Confusion and Stealth
This addresses security issues in communication systems, but appears incremental as it builds on existing secrecy concepts.
The paper tackles the problem of secure communication by defining 'effective secrecy', which ensures messages cannot be deciphered and the presence of communication is hidden, using resolvability for stealth measurement and applying results to wire-tap and broadcast channels.
A security measure called effective security is defined that includes strong secrecy and stealth communication. Effective secrecy ensures that a message cannot be deciphered and that the presence of meaningful communication is hidden. To measure stealth we use resolvability and relate this to binary hypothesis testing. Results are developed for wire-tap channels and broadcast channels with confidential messages.