dedis / personhood.online

The new personhood app

POPCOIN

POPCOIN is an appliation for a currency which has the mechanism featured by demurrage and universal basic income (in the future) a global currency.

Now this is only a demo version with restricted features. Creating a new account with EPFL Tequila authentication, receiving and sending coins to others.

How To Build

Environment

Node.js

For windows user, you can download Node.js installer (.msi) here.

For macOS user, you can also download Node.js from the link above or use Homebrew (package manager for macOS):

brew install node

For installing the Node.js on Linux, please check the document here for different distributions of Linux.

React Native and Dependencies

After clone this project by the commands below:

# Get the repo
git clone [email protected]:dedis/personhood.online.git

# Switch to this branch
git fetch
git checkout rn-dev

# Change directory to the project
cd ./personhood.online

Then prepare react native dependencies:

yarn

# or using the default package manager

npm install

If you not familiar with yarn. please check here. Both package manager yarn or npm works for this project.

For both iOS and Android, they have their own dependencies for supporting react native packages.

iOS

It can only run on macOS

Ensure that you already have Xcode and CocoaPods installed on your macOS. Then run:

npx pod-install ios

# or
cd ./ios
pod install 

The script below will build the app and run it in the simulator. It will also automatically start the metro daemon for compiling project dynamically.

yarn ios

Android

Similarly, the script below will run the app in an Android simulator. You also need to have Andriod Studio and gradle installed first.

yarn android

To make a release build:

cd ./android
./gradlew assembleRelease

Then you will find the APK in ./android/app/build/outputs/apk/release/

Build Contract

By running the script below, you will get the ABI and bytecode of the POPCOIN contract:

solc -o . --bin --abi ./contract/Popcoin.sol

personhood.online's Issues

Personhood minting on iOS

When minting is clicked on iOS, it hides the badge below it.

Add Rock Paper Scissors

For a first demo, add a simple Rock, Paper, Scissors contract. It should:

1. get a salted hash from player 1 with his choice, plus the coins he wants to put at stake
2. get the choice of player 2, coins matching the stake, and the account of player 2 for an eventual win
3. get the pre-hash of player 1, and the account where an eventual win should be stored

Manage-tab doesn't have correct fonts

The different parts of the Manage-tab are not shown correctly on all displays.

Version listed in settings page differs from the real version

0.3.8 real, 0.3.7 in settings page

Progress bars everywhere

Some missing progress-bars:

• personhood / create party
• personhood / activate barrier point
• identity / publish personhood

Party Editing display

Now: on some displays, not all fields are shown
Wanted: add ScrollView (or whatever).

Scanning party - display and remove keys

Now: all keys are static
wanted: when a key is clicked, its QRCode pops up, with delete and cancel buttons

Settings - "Add Personhood"

now: when clicked and Save pushed, nothing happens
wanted: give feedback when personhood added

Party editing improvements

wanted:

• make it possible to remove organizer
• check if organizer is already in list

clicking on delete all crashes

I did "start -> give alias -> delete all" and the app crashed.

Personhood party - attendee QRCode

now: the qrcode from the attendees is small and sometimes difficult to scan
wanted: when the qrcode is clicked, it should show it like the qrcodes from 'Contact'

Add save/load of configuration

Using https://www.npmjs.com/package/nativescript-mediafilepicker to make it possible to load a configuration file in case an update went wrong...

The saving of the configuration is already possible, but not yet enabled.

Scanning party - sort keys

Now: all of the attendee's keys are unsorted
wanted: sort attendee's keys in display

Sending of coins

Now: when a user wants to send all coins, it refuses
wanted: making it possible for the user to send all his coins

Merge new app?

@ineiti Should I merge new app development branch (rn-dev) to master?

proposed minor formatting changes

The URL should be a link you can click on.

The logo should be a link you can click on.

The space before the colon should be removed in English.

"Once your identity got activated" -> is activated.

lab: rock-paper-scissors: can play with self (but never finish)

• create a new game
• delete it, it will stay here showing "click to join game"
  • self can play then it will show "waiting for reveal" and we can't interact with it anymore
  • self can try to delete it but it doesn't do anything

Add polling contract or service

For the demo, add a polling contract (or service) where all members of a personhood-party can reply once for a given question, using linkable ring signatures to make sure every member only votes once.

Consider attack scenarios when the URLs in QRs are edited

Here is the URL that is in the qr code when I look at the "user info" from Gaylor:
https://pop.dedis.ch/qrcode/identity-1?credentialIID=cc99b5ac2c6cfccb8476d0920072b661f0b3a45b282b8ec1ad7c4df24e53a20c&public_ed25519=b7a1e2b0a8c76636f65cab8b1e62e5fa43da2f0944e60729a5ee78ad41dc29d7&alias=Gaylor

I could edit that URL to point at my id, leaving alias=Gaylor, then make a forged personhood app by editing a screenshot. Then if I can get someone to add my fake Gaylor to his contract, then when they send coins to "Gaylor", my account is credited with them.

Of course, this is the "binding public keys to humans" problem, but it feels like the binding of the alias to the public key is too weak at this point.

New Personhood party on iOS

When creating a new personhood party on iOS, several problems appear:

• + button to create a new party does not show up (too little space in upper bar)
• When chosing new date or time, the selector doesn't allow to pick the date
• Cannot add other organizer, as the list shows up empty