

Hybrid Crypto: A Secure and User-Friendly Encryption System for Digital Communication
Abstract
In this paper, we present Hybrid Crypto, a secure and convenient data protection system for empowering users based on the notion of hybrid cryptography. AES-GCM with 128-bit keys for strong data confidentiality and integrity, combined with RSA with 3072-bit keys for secure key exchange offering better resistance to future potential quantum attacks. As an application of visual cryptography, it allows users to hide images in encrypted shares, presenting a new path to visual information security. An easy to use GUI that makes encryption and decryption round to be a breeze, especially with ease of using it on different devices to secure your messages and images.
Hybrid Crypto presents a practical compromise between a strong security and the usability and is used in a secure communication (e.g. messaging, cloud-based sharing). In addition to this, the implementation is used as a teaching tool for students in order to understand the application of cryptographic solutions in practical systems. It is further optimized in order to increase its resistance to future threats, among other things using post-quantum algorithmsReferences
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