🥷 SecretMD

Product Intro

What is it?

SecretMD is a rich text editor which allows users to store and share any plain text file onto a distributed and confidential Phala blockchain in Polkadot ecosystem.

When to use it?

Privacy

• Share a secret message to someone
• Securely save your important personal information
• A more private way than sending a PGP encryption email without any need of email or PGP keys

Storage

• Store information FOREVER on a decentralized blockchain

Why use it?

End to end encryption using Polkadot wallet

No Extra Key Required - Without any need of a separate set of encryption key like PGP, SecretMD requires only a Polkadot wallet for encryption/decryption.

No need for password -Unlike Pastebin.com, encryption does not require a password to encrypt or decrypt a file.

Decentralized storage

Unlike Pastebin.com which stores the encrypted file on a centralized server which is susceptible for lost, SecretMD stores the file on Phala blockchain.

Hardware level End to End encryption

From Phala's Intro to Confidential Contract

By leveraging Trusted Execution Environment (TEE), which is powered by secure hardware, Phala supports confidential contracts, which are just like ordinary smart contracts but their input and states are encrypted and protected by hardware.

Development

Technical Overview

Development

Follow Tutorial from Phala to set up local development environment.

Client

Environment Variables

Note: This step is necessary because backend services are required.

You can use environment variables to set prpc base url and ws provider endpoint:

cp .env .env.local

Then edit .env.local, for example:

NEXT_PUBLIC_BASE_URL=http://0.0.0.0:8001
NEXT_PUBLIC_WS_ENDPOINT=ws://0.0.0.0:19944

Getting Started

yarn
yarn dev

Open http://localhost:3000.

Server

It requires three different binaries to be executed in order.

From Phala Blockchain in Detail

phala-node: The Substrate-based blockchain node
pRuntime: The TEE runtime. Contracts run in pRuntime
pherry: The Substrate-TEE bridge relayer. Connects the blockchain and pRuntime

Building and running Phala blockchain

Refer to README_Phala for details.

If running on a VM, make sure to bind the 9944 WebSocket port.

vagrant ssh -- -L 9944:127.0.0.1:9944 -L 8000:127.0.0.1:8000

1. Run phala-node

./target/release/phala-node --dev --tmp

2. Run pRuntime

source /opt/intel/sgxsdk/environment
cd ./standalone/pruntime/bin
./app

3. Run pherry

./target/release/pherry --dev --no-wait