ECDH Tool Contact

ECDH Tool Contact is an application that allows you to calculate Shared Secrets Diffie-Hellman using Elliptic Curves.
The application can generate ECC Keys on the terminal (your phone) or you can download the applet provided into a JCOP SmartCard using my application CAP Loader, and then generate key pairs in the terminal and the Smart Card in order to compute and check the shared secret in both devices.

You need an USB Smart Card Reader and an OnTheGo adapter.

This program is distributed in the hope that it will be useful for educational purposes.

★ Allows you to Generate ECC Keys on your phone and compute Diffie-Hellman Shared Secret

★ Allows you to Generate ECC Keys both on your phone and in a Smart Card and compute Diffie-Hellman Shared Secret.

★ Allows you to Paste your own ECC Keys on your phone and compute Diffie-Hellman Shared Secret

★ With the application is downloaded an Expansion File what is located in /sdcard/Android/obb/main.2.com.jmarroyo.ecdhtoolcontact.obb
You must copy this file to another location using a file explorer on your phone.
Once you can get it from your PC, rename to main.2.com.jmarroyo.ecdhtoolcontact.ZIP and you can extract
the applet provided appletecdh.cap


Some of the Supported Readers from the manufacturer ACS Advanced Card Systems Ltd.
For further information and updated list of devices supported visit www.acs.com.hk
ACR33U
ACR38U-CCID/ACR100-CCID
ACR3801
ACR39U
ACR88U
ACR89U-AX
ACR100I
ACR101
ACR102
ACR122UX
ACR125
ACR128XU
072F 8201 APG8201-A1
072F 90DB CryptoMate64