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https://github.com/sbip-sg/tokenswap
Token atomic swap between Ethereum and corda
https://github.com/sbip-sg/tokenswap
Last synced: 8 days ago
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Token atomic swap between Ethereum and corda
- Host: GitHub
- URL: https://github.com/sbip-sg/tokenswap
- Owner: sbip-sg
- Created: 2021-05-25T08:52:05.000Z (over 3 years ago)
- Default Branch: master
- Last Pushed: 2022-06-24T04:00:18.000Z (over 2 years ago)
- Last Synced: 2024-11-21T21:02:53.087Z (about 1 month ago)
- Language: JavaScript
- Size: 664 KB
- Stars: 2
- Watchers: 5
- Forks: 1
- Open Issues: 5
-
Metadata Files:
- Readme: README.md
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README
# tokenswap
This demo project aims to swap token between corda network and ethereum network.
### Architecture
The ethedapp folder implements a token contract based erc-20 and a htlc contract.
The cordapp folder implements a fungible token housetoken based corda token sdk.
### Scenario
There are 3 participants
Party C is an issuer of housetoken
Part A wants to buy 100 amount of housetoken that is owned by Party B.
- Party A transfer ehter(or erc token) to Party B()
- Party B transfer 100 amount of housetoken to Party A
### Pre-requisites
**Ethereum environment**
- Node.js v12
- Python v2
- Npm v6
use npm install dependencies in ./ethdapp folder
``` npm install```
Noted: if truffel install failed, use ```npm install truffle -g``` to install globally
**Cordapp environment**
- Java 1.8
- Xterm(linux)
- Gradle 5.64
For more specific information, please refer to: [Setup Guide](https://docs.corda.net/getting-set-up.html).
### Atomic swap between Ethereum and Corda
User Account information
1. Compile and Start Corda nodes in local developed enviroment
```bash
#compile(linus or macos)
./gradlew clean depolyNodes
#run the nodes
./build/nodes/runnodes
or
cd ./build/nodes & java -jar runnodes.jar
```
2. Escrosw issue creat token and issue 50 house token to Alice(work in Escrow node)
```bash
#create token
flow start CreateHouseTokenFlow symbol: house, valuation: 100000
#issue token
flow start IssueHouseTokenFlow symbol: house, quantity: 50, holder: Alice
```
### HTLC Process
3. Alice Init HTLC and fund 30 token to Escrow node in Alice's terminal(corda side)
flow start HTLCFundFlow HTLCId: 1001, escrow: Escrow, receiver: Bob, symbol: house, amount: 30, time: 3000, hash: 0xfd69353b27210d2567bc0ade61674bbc3fc01a558a61c2a0cb2b13d96f9387cd
4. Bob deploy token and htlc contracts, then fund 0.1 Ether in htlc contract(Ethereum side)
#deploy htlc contract in kovan
truffle migrate --reset --network kovan
5. Alice withdraw Ether from htlc contract (Ethereum side)
use ``truffle console --network kovan` open kovan console
```bash
#Get Alice and Bob Address
const addresses = await web3.eth.getAccounts()
const Alice = addresses[1]
const Bob = addresses[0]
const htlc = await HTLC.deployed()
#withdarw, secret get from Alice's htlc contract
await htlc.fund({from:Bob,value:200000000000000000})
await htlc.withdraw('abracadabra',{from:Alice})
#check blance
#const token = await Token.deployed()
#const balance = await token.balanceOf(Alice)
#bob get secrect from smartcontract
const mySecret = await htlc.getSecret.call({from:Bob})
```
6. Withdraw HTLC from Escrow in Bob's terminal
flow start HTLCWithdrawFlow escrow: Escrow, HTLCId: 1001, secret: abracadabra
7. Other Secrinos
1) Alice Refund token when time expires
flow start HTLCFundFlow HTLCId: 1002, escrow: Escrow, receiver: Bob, symbol: house, amount: 10, time: 30, hash: 0xfd69353b27210d2567bc0ade61674bbc3fc01a558a61c2a0cb2b13d96f9387cd
flow start HTLCRefundFlow escrow: Escrow, HTLCId: 1002