web3studio-dont's Introduction

The decentralized Off-chain Non-transferable (dONT) system

Very much a WIP and actively seeking contributors (preferably with experience in haskell and/or implementing encryption protocols)

dONT will be composed of the following components:

An AWS Lambda Authorizer that uses ECDSA over the Koblitz curve secp256k1 to verify the source and integrity of the message (same method used by Ethereum to validate transactions). This authorizer will also check the public key against a smart contract so that only smart contract authorized addresses (e.g. token holders) have access to a given lambda function. This Authorizer will be completely portable.
A client-side watermarking scheme based off TTP-Free Asymmetric Fingerprinting Based on Client Side Embedding by Tiziano Bianchi and Alessandro Piva, in which a client generates an identifyer, encrypts it with a homomorphic encryption scheme, and sends it to a server who uses it to generate a personalized decryption key. The server then sends the personalized decryption key to the client. When the client uses this key to decrypt the video, the video will be simultaneously decrypted and watermarked. This means that the client is forced to watermark their own copy of the video in order to view it.
An escrow-like system that ties off-chain service provision with on-chain clients.

To use: from top-most directory:

npm install
stack build

To run tests: stack test

To run lambda functions locally: serverless offline start

To run locally, you will need an installation of cryptol, with the binary added to your path. You will also need an installation of z3

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