Hadamard matrices are a special type of matrices having various applications in cryptography. Here we present a method for the construction of Hadamard matrices using plateaued Boolean functions. The key generated using Hadamard matrices is used for end to end encryption of the messages using symmetric key cryptography. The performance of the proposed system is compared with the Advanced Encryption Standard (AES), and RSA cryptosystems. The results prove that the proposed system outperforms existing systems.
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