Abstract: Cryptography, as both an art and a science, employs specific terminology to secure messages, including plaintext, ciphertext, encryption, decryption, and keys. The encryption process ...

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This application is a command-line tool that can be used to encrypt and decrypt messages using a shared shift key.

The Caesar Cipher is a basic encryption algorithm where each letter in the plaintext is shifted a certain number of places down or up the alphabet. In this implementation, the user can input a plain ...

Abstract: The paper describes a microcontroller based secured optical wireless communication system using laser and phototransistor. These days the usage of Wi-Fi has reached to every nook and corner ...