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An Electronic Shelf Label is a device that's typically attached to the front edge of retail shelving. ESL Firebase Edition V2.0 utilizes the AES-256 in CBC mode and Google Firebase. It doesn't require an expensive gateway to function, once configured, all it needs is a power supply and a Wi-Fi access point. ESL Firebase Edition V2.0 allows you to operate as many of them as you wish, provided that each has its own unique ID, and there's enough power and bandwidth for all of them. For...

The hash latch generates keys in a manner similar to how some cryptocurrencies are mined. It takes a string and brute-forces a prefix for it so that the hash of the string with the prefix has a certain number of leading zeroes. But that alone would've been too easy to hack. To prevent an attacker from forging the keys by generating a new prefix: the hash latch doesn't output the keys in the plaintext. Instead, it encrypts the key and outputs the ciphertext. That means that instead of...

Encrypt is a small application which allows you to encrypt your files and even write plain text to be encrypted in GZIP code so it effectively cannot be read by humans. Your note passing, personal diary and more is safe. As well as that, it can decode your GZIP messages back into plain text so it can be read again. It is written entirely in Java, and is very easy to use. For more information on this application, please refer to my YouTube tutorial or send me an email at romejanic@gmail.com....