A SECURED EMBEDDED SCHEME BASED ON MULTI-CRYPTOGRAPHIC PROTOCOLS

Transmission of information via unsecured channel requires confidentiality, authorization and authentication as part of major factors that must be put into consideration. This work proposes a scheme that can take care of these major factors at once. The method involves a multi-level approach that comprises of a key exchange protocol, a message authentication code, a key derivation function and a symmetric encryption known as polyalphabetic substitution that makes use of a 94x94 Vigenere table. The four cryptographic techniques are combined to form an encryption protocol, coined MLES for a message to be securely transmitted. In order to test the functionality of MLES scheme, it was implemented using Java 1.8.0 and tested on a text data. The result shows a feasible protocol that can secure a message in steganography.