ECDH Tool Contact Application icon

ECDH Tool Contact 1.4

2.6 MB / 1+ Downloads / Rating 5.0 - 1 reviews


See previous versions

ECDH Tool Contact, developed and published by José Mª Arroyo Castejón, has released its latest version, 1.4, on 2023-12-21. This app falls under the Tools category on the Google Play Store and has achieved over 100 installs. It currently holds an overall rating of 5.0, based on 1 reviews.

ECDH Tool Contact APK available on this page is compatible with all Android devices that meet the required specifications (Android 3.1+). It can also be installed on PC and Mac using an Android emulator such as Bluestacks, LDPlayer, and others.

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App Screenshot

App Screenshot

App Details

Package name: com.jmarroyo.ecdhtoolcontact

Updated: 1 year ago

Developer Name: José Mª Arroyo Castejón

Category: Tools

New features: Show more

Installation Instructions

This article outlines two straightforward methods for installing ECDH Tool Contact on PC Windows and Mac.

Using BlueStacks

  1. Download the APK/XAPK file from this page.
  2. Install BlueStacks by visiting http://bluestacks.com.
  3. Open the APK/XAPK file by double-clicking it. This action will launch BlueStacks and begin the application's installation. If the APK file does not automatically open with BlueStacks, right-click on it and select 'Open with...', then navigate to BlueStacks. Alternatively, you can drag-and-drop the APK file onto the BlueStacks home screen.
  4. Wait a few seconds for the installation to complete. Once done, the installed app will appear on the BlueStacks home screen. Click its icon to start using the application.

Using LDPlayer

  1. Download and install LDPlayer from https://www.ldplayer.net.
  2. Drag the APK/XAPK file directly into LDPlayer.

If you have any questions, please don't hesitate to contact us.

Previous Versions

ECDH Tool Contact 1.4
2023-12-21 / 2.6 MB / Android 3.1+

About this app

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

New features

Adding expansion file