QoSs definition and session description protocol for secure communication using compressive sensing

In Compressive Sensing (CS)-based cryptographic mechanisms, the measurement matrix is treated as a secret key (secret CS-matrix), so that the encryption and/or the generation of authentication codes are performed during the compressed sampling process. If the secret CS-matrix is used once for each signal, only the key management is required for the effective use of CS-based cryptographic operations for security. In order to be used during a secure CS-based communication in general and during the secure session initialization in particular, the secret CS-matrix and associated metadata and parameters need to be described and formatted for further secure negotiations. In standard cryptography, only secret binary keys and associated metadata are negotiated during the initialization of a secure communication. In contrast, different secret CS-matrices may have different sizes, properties, and structures, depending on the characteristics of the input vector, the desired performance, the compressive sampling rate, and the expected reconstruction results. This paper proposes a description of the character- istics and properties of the secret CS-matrix. This includes the description of its parameters and metadata, the definition of associated services (security related and application related) and the description of Methods and protocols needed for the negotiation of all required parameters, properties, and services.