Abstract
This paper announces data security cryptosystems using Elliptic Curve Diffie-Hellman (ECDH) with elliptic curve type parameter secp224r1. It discusses key exchanges such as, for example, the process of calculating symmetric keys chosen from elliptic groups by binary 
operations, encryption processes, and decryption processes, etc. The proposed cryptosystem that belongs to this site contains a number of materials relating to security, digital forensics, networks, and many other things. Such systems are known to show hidden appeal. We also show that the new cryptosystem has multi-stability and attractiveness that coexist. This implementation uses Elliptic Curve Cryptography (ECC) with JavaScript.