As text covers, color and grayscale images are employed. The suggested model encrypts secret data and hides them using 2D-DWT-3L. The proposed model is built by combining a proposed hybrid encryption system with either a 2D Discrete Wavelet Transform 1 Level (2D-DWT-1L) or a 2D Discrete Wavelet Transform 2 Level (2D-DWT-2L) steganography technique. In this paper, we present a hybrid security model for the protection of diagnostic text data contained in medical photographs. Numerous cryptographic algorithms are already available, including data encryption standard (DES), Rivest–Shamir–Adleman (RSA), and advanced encryption standard (AES). Communication between two devices securely is a difficult problem. The security and integrity of medical data have emerged as major barriers for healthcare service systems as the Internet of Things has evolved dramatically in the healthcare business. Numerous methods for data protection have been developed during the previous decades, including steganography and cryptography. The incredible advancements in data transmission technology have opened up more potentials for data security than ever before.
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