Hardware Implementation of Two Level Authentication Algorithm Using Cryptography with Steganography for Text-Image Security

This paper proposes two level authentication for an image communication through world wide web. The algorithm presented here mainly consist of techniques combined with symmetric key cryptography and LSB based steganography. Here two factor authentication are used that requires two forms of identification to access sensitive data. Symmetric key algorithms are algorithm for cryptography that use the same cryptographic keys for both the encryption of plaintext and the decryption of cipher text to maintain a private and secure communication. LSB steganography is commonly used technique for hiding secret messages within images. This algorithm can detoriate the secret message quality but still secret message is mostly recognized and is smoothed fine and noise reduced using Gaussian filter. Here the algorithm is implemented in software(using MATLAB) and in hardware(using FPGA and PSoC).