DATA SECURITY FOR HIGHLY SECURE MESSAGES WITH THE CONCEPT OF STEGANOGRAPHY AND CRYPTOGRAPHY
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Abstract
To transmit secret data over the internet, the
information should be sent in a way attacker finds
it difficult to read the secret data. In this paper
patient’s secret information is hidden in the biomedical
signal like ECG/EEG/PPG. The
transmitted information generally contains
biomedical -signals patient data. Main concerns
include privacy and authenticity of the data being
transmitted. A secret key is used which is known
to sender and receiver. This paper introduces a
novel steganography technique that guarantees
protection of private data utilizing a key and
originality of the bio-medical-signals. To
maximize embedding, Fast-Walsh-Hadamard
Transform is used to convert the signals into a set
of coefficients. The proposed technique can be
applied on three bio-medical signals like
ECG/EEG/PPG unlike any other technique which
uses only one bio-medical signal. To achieve least
distortion, coefficients of least significant bit is
considered. The algorithm has less impact on the
bio-medical signal and the signal at the
transmitting side can be recovered with
lessdistortion.
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