How--to-deploy-smart-contracts-on
The following smart contract code is only an example and is NOT to be used in Production systems.
pragma solidity ^0.4.11;
/**
* Math operations with safety checks
*/
library SafeMath {
function mul(uint a, uint b) internal pure returns (uint) {
uint c = a * b;
assert(a == 0 || c / a == b);
return c;
}
function div(uint a, uint b) internal pure returns (uint) {
assert(b > 0);
uint c = a / b;
assert(a == b * c + a % b);
return c;
}
function sub(uint a, uint b) internal pure returns (uint) {
assert(b <= a);
return a - b;
}
function add(uint a, uint b) internal pure returns (uint) {
uint c = a + b;
assert(c >= a);
return c;
}
function max64(uint64 a, uint64 b) internal pure returns (uint64) {
return a >= b ? a : b;
}
function min64(uint64 a, uint64 b) internal pure returns (uint64) {
return a < b ? a : b;
}
function max256(uint256 a, uint256 b) internal pure returns (uint256) {
return a >= b ? a : b;
}
function min256(uint256 a, uint256 b) internal pure returns (uint256) {
return a < b ? a : b;
}
}
contract ERC20Protocol {
/* This is a slight change to the ERC20 base standard.
function totalSupply() constant returns (uint supply);
is replaced with:
uint public totalSupply;
This automatically creates a getter function for the totalSupply.
This is moved to the base contract since public getter functions are not
currently recognised as an implementation of the matching abstract
function by the compiler.
*/
/// total amount of tokens
uint public totalSupply;
/// @param _owner The address from which the balance will be retrieved
/// @return The balance
function balanceOf(address _owner) public constant returns (uint balance);
/// @notice send `_value` token to `_to` from `msg.sender`
/// @param _to The address of the recipient
/// @param _value The amount of token to be transferred
/// @return Whether the transfer was successful or not
function transfer(address _to, uint _value) public returns (bool success);
/// @notice send `_value` token to `_to` from `_from` on the condition it is approved by `_from`
/// @param _from The address of the sender
/// @param _to The address of the recipient
/// @param _value The amount of token to be transferred
/// @return Whether the transfer was successful or not
function transferFrom(address _from, address _to, uint _value) public returns (bool success);
///if you want to use privacy transaction,you need to implement this function in your contract
/// @notice send `_value` token to `_to` from `msg.sender`
/// @param _to The address of the recipient
/// @param _toKey the ota pubkey
/// @param _value The amount of token to be transferred
/// @return Whether the transfer was successful or not
function otatransfer(address _to, bytes _toKey, uint256 _value) public returns (string);
///check privacy transaction
/// @param _owner The address from which the ota balance will be retrieved
/// @return The balance
function otabalanceOf(address _owner) public constant returns (uint256 balance);
/// @notice `msg.sender` approves `_spender` to spend `_value` tokens
/// @param _spender The address of the account able to transfer the tokens
/// @param _value The amount of tokens to be approved for transfer
/// @return Whether the approval was successful or not
function approve(address _spender, uint _value) public returns (bool success);
/// @param _owner The address of the account owning tokens
/// @param _spender The address of the account able to transfer the tokens
/// @return Amount of remaining tokens allowed to spent
function allowance(address _owner, address _spender) public constant returns (uint remaining);
event Transfer(address indexed _from, address indexed _to, uint _value);
event Approval(address indexed _owner, address indexed _spender, uint _value);
}
//the contract implements ERC20Protocol interface with privacy transaction
contract StandardToken is ERC20Protocol {
using SafeMath for uint;
string public constant name = "WanToken-Beta";
string public constant symbol = "WanToken";
uint public constant decimals = 18;
function transfer(address _to, uint _value) public returns (bool success) {
if (balances[msg.sender] >= _value) {
balances[msg.sender] -= _value;
balances[_to] += _value;
Transfer(msg.sender, _to, _value);
return true;
} else { return false; }
}
function transferFrom(address _from, address _to, uint _value) public returns (bool success) {
if (balances[_from] >= _value && allowed[_from][msg.sender] >= _value) {
balances[_to] += _value;
balances[_from] -= _value;
allowed[_from][msg.sender] -= _value;
Transfer(_from, _to, _value);
return true;
} else { return false; }
}
function balanceOf(address _owner) public constant returns (uint balance) {
return balances[_owner];
}
function approve(address _spender, uint _value) public returns (bool success) {
assert((_value == 0) || (allowed[msg.sender][_spender] == 0));
allowed[msg.sender][_spender] = _value;
Approval(msg.sender, _spender, _value);
return true;
}
function allowance(address _owner, address _spender) public constant returns (uint remaining) {
return allowed[_owner][_spender];
}
////////////////////////////////////////////////////////////////////////
mapping (address => uint) balances;
mapping (address => mapping (address => uint)) allowed;
// privacy balance, bytes for public key
mapping (address => uint256) public privacyBalance;
mapping (address => bytes) public otaKey;
//this only for initialize, only for test to mint token to one wan address
function initPrivacyAsset(address initialBase, bytes baseKeyBytes, uint256 value) public {
privacyBalance[initialBase] = value;
otaKey[initialBase] = baseKeyBytes;
}
// return string just for debug
function otatransfer(address _to, bytes _toKey, uint256 _value) public returns (string) {
if(privacyBalance[msg.sender] < _value) return "sender token too low";
privacyBalance[msg.sender] -= _value;
privacyBalance[_to] += _value;
otaKey[_to] = _toKey;
return "success";
}
//check privacy balance
function otabalanceOf(address _owner) public view returns (uint256 balance) {
return privacyBalance[_owner];
}
Note:
- Privacy transaction function is "otatransfer" in the ERC20 Protocol, the contract with privacy transaction need to implement ERC20 Protocol
- Privacy balance is stored in the map privacyBalance, function otabalanceOf can get this balance
How to compile and deploy:
Requirement:
1: a working Wanchain client, go to the github site, https://github.com/wanchain/go-wanchain, to get the latest version
2: remix https://remix.ethereum.org, which is an amazing online smart contract development IDE
3: your awesome Dapp consists of one or multiple smart contracts
Steps:
1: go to remix, copy and paste your smart contract code, make static syntax analysis, and compile it
2: click Details on the right panel of remix, copy all the code of WEB3DEPLOY section from the pop-up
3: copy the script and run it in gwan console
var erc20simple_contract = web3.eth.contract([{"constant":true,"inputs":[],"name":"name","outputs":[{"name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_spender","type":"address"},{"name":"_value","type":"uint256"}],"name":"approve","outputs":[{"name":"success","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"totalSupply","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_to","type":"address"},{"name":"_toKey","type":"bytes"},{"name":"_value","type":"uint256"}],"name":"otatransfer","outputs":[{"name":"","type":"string"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"_from","type":"address"},{"name":"_to","type":"address"},{"name":"_value","type":"uint256"}],"name":"transferFrom","outputs":[{"name":"success","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"decimals","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"name":"","type":"address"}],"name":"privacyBalance","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"name":"_owner","type":"address"}],"name":"balanceOf","outputs":[{"name":"balance","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"symbol","outputs":[{"name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"initialBase","type":"address"},{"name":"baseKeyBytes","type":"bytes"},{"name":"value","type":"uint256"}],"name":"initPrivacyAsset","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"_to","type":"address"},{"name":"_value","type":"uint256"}],"name":"transfer","outputs":[{"name":"success","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"name":"_owner","type":"address"}],"name":"otabalanceOf","outputs":[{"name":"balance","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"name":"_owner","type":"address"},{"name":"_spender","type":"address"}],"name":"allowance","outputs":[{"name":"remaining","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"name":"","type":"address"}],"name":"otaKey","outputs":[{"name":"","type":"bytes"}],"payable":false,"stateMutability":"view","type":"function"},{"anonymous":false,"inputs":[{"indexed":true,"name":"_from","type":"address"},{"indexed":true,"name":"_to","type":"address"},{"indexed":false,"name":"_value","type":"uint256"}],"name":"Transfer","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"_owner","type":"address"},{"indexed":true,"name":"_spender","type":"address"},{"indexed":false,"name":"_value","type":"uint256"}],"name":"Approval","type":"event"}]);
var erc20simple = erc20simple_contract.new(
{
from: web3.eth.accounts[1],
data: '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',
gas: '4700000'
}, function (e, contract){
console.log(e, contract);
if (typeof contract.address !== 'undefined') {
console.log('Contract mined! address: ' + contract.address + ' transactionHash: ' + contract.transactionHash);
}
})
4: the transaction id and contract address (hash values starting with '0x') will be printed out onto the console after few seconds
5: now, you can play with your Dapp
Note:
You can locate a demo WANCHAIN token contract and involved scripts under contracts/demo/ directory
How to invoke privacy transfer
After deployed above token contract on WANCHAIN,in the WANCHAIN console,you can invoke token privacy transaction according to following process:
Suppose there are at lease 3 accounts in your WANCHAIN node
- Define asset function and variable
var initPriBalance = 10000;
var priTranValue = 888;
var wanBalance = function(addr){
return web3.fromWin(web3.eth.getBalance(addr));
}
var wanUnlock = function(addr){
return personal.unlockAccount(addr,"wanglu",99999);
}
var sendWanFromUnlock = function (From, To , V){
eth.sendTransaction({from:From, to: To, value: web3.toWin(V)});
}
var wait = function (conditionFunc) {
var loopLimit = 130;
var loopTimes = 0;
while (!conditionFunc()) {
admin.sleep(2);
loopTimes++;
if(loopTimes>=loopLimit){
throw Error("wait timeout! conditionFunc:" + conditionFunc)
}
}
}
wanUnlock(eth.accounts[1])
wanUnlock(eth.accounts[2])
stampBalance = 0.09;
- buy stamp for token privacy transaction
abiDefStamp = [{"constant":false,"type":"function","stateMutability":"nonpayable","inputs":[{"name":"OtaAddr","type":"string"},{"name":"Value","type":"uint256"}],"name":"buyStamp","outputs":[{"name":"OtaAddr","type":"string"},{"name":"Value","type":"uint256"}]},{"constant":false,"type":"function","inputs":[{"name":"RingSignedData","type":"string"},{"name":"Value","type":"uint256"}],"name":"refundCoin","outputs":[{"name":"RingSignedData","type":"string"},{"name":"Value","type":"uint256"}]},{"constant":false,"type":"function","stateMutability":"nonpayable","inputs":[],"name":"getCoins","outputs":[{"name":"Value","type":"uint256"}]}];
contractDef = eth.contract(abiDefStamp);
stampContractAddr = "0x00000000000000000000000000000000000000c8";
stampContract = contractDef.at(stampContractAddr);
var wanAddr = wan.getWanAddress(eth.accounts[1]);
var otaAddrStamp = wan.generateOneTimeAddress(wanAddr);
txBuyData = stampContract.buyStamp.getData(otaAddrStamp, web3.toWin(stampBalance));
sendTx = eth.sendTransaction({from:eth.accounts[1], to:stampContractAddr, value:web3.toWin(stampBalance), data:txBuyData, gas: 1000000});
wait(function(){return eth.getTransaction(sendTx).blockNumber != null;});
keyPairs = wan.computeOTAPPKeys(eth.accounts[1], otaAddrStamp).split('+');
privateKeyStamp = keyPairs[0];
- get stamp mix set for ring sign
var mixStampAddresses = wan.getOTAMixSet(otaAddrStamp,2);
var mixSetWith0x = []
for (i = 0; i < mixStampAddresses.length; i++){
mixSetWith0x.push(mixStampAddresses[i])
}
- define token contract ABI
var erc20simple_contract = web3.eth.contract([{"constant":true,"inputs":[],"name":"name","outputs":[{"name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_spender","type":"address"},{"name":"_value","type":"uint256"}],"name":"approve","outputs":[{"name":"success","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"totalSupply","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_to","type":"address"},{"name":"_toKey","type":"bytes"},{"name":"_value","type":"uint256"}],"name":"otatransfer","outputs":[{"name":"","type":"string"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"_from","type":"address"},{"name":"_to","type":"address"},{"name":"_value","type":"uint256"}],"name":"transferFrom","outputs":[{"name":"success","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"decimals","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"name":"","type":"address"}],"name":"privacyBalance","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"name":"_owner","type":"address"}],"name":"balanceOf","outputs":[{"name":"balance","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"symbol","outputs":[{"name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"initialBase","type":"address"},{"name":"baseKeyBytes","type":"bytes"},{"name":"value","type":"uint256"}],"name":"initPrivacyAsset","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"_to","type":"address"},{"name":"_value","type":"uint256"}],"name":"transfer","outputs":[{"name":"success","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"name":"_owner","type":"address"}],"name":"otabalanceOf","outputs":[{"name":"balance","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"name":"_owner","type":"address"},{"name":"_spender","type":"address"}],"name":"allowance","outputs":[{"name":"remaining","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"name":"","type":"address"}],"name":"otaKey","outputs":[{"name":"","type":"bytes"}],"payable":false,"stateMutability":"view","type":"function"},{"anonymous":false,"inputs":[{"indexed":true,"name":"_from","type":"address"},{"indexed":true,"name":"_to","type":"address"},{"indexed":false,"name":"_value","type":"uint256"}],"name":"Transfer","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"_owner","type":"address"},{"indexed":true,"name":"_spender","type":"address"},{"indexed":false,"name":"_value","type":"uint256"}],"name":"Approval","type":"event"}]);
contractAddr = '0xa2e526a3632d225f15aa0592e00bed31a48c953d';
//this address should changed according to your contract deploy
erc20simple = erc20simple_contract.at(contractAddr)
- create one time address for account1
var wanAddr = wan.getWanAddress(eth.accounts[1]);
var otaAddrTokenHolder = wan.generateOneTimeAddress(wanAddr);
keyPairs = wan.computeOTAPPKeys(eth.accounts[1], otaAddrTokenHolder).split('+');
privateKeyTokenHolder = keyPairs[0];
addrTokenHolder = keyPairs[2];
sendTx = erc20simple.initPrivacyAsset.sendTransaction(addrTokenHolder, otaAddrTokenHolder, '0x' + initPriBalance.toString(16), {from:eth.accounts[1], gas:1000000});
wait(function(){return eth.getTransaction(sendTx).blockNumber != null;});
ota1Balance = erc20simple.privacyBalance(addrTokenHolder)
if (ota1Balance != initPriBalance) {
throw Error('ota1 balance wrong! balance:' + ota1Balance + ', except:' + initPriBalance)
}
- generate ring sign data
var hashMsg = addrTokenHolder
var ringSignData = personal.genRingSignData(hashMsg, privateKeyStamp, mixSetWith0x.join("+"))
- create one time address for account2
var wanAddr = wan.getWanAddress(eth.accounts[2]);
var otaAddr4Account2 = wan.generateOneTimeAddress(wanAddr);
keyPairs = wan.computeOTAPPKeys(eth.accounts[2], otaAddr4Account2).split('+');
privateKeyOtaAcc2 = keyPairs[0];
addrOTAAcc2 = keyPairs[2];
- generate token privacy transfer data
cxtInterfaceCallData = erc20simple.otatransfer.getData(addrOTAAcc2, otaAddr4Account2, priTranValue);
``
9. generate call token privacy transfer data
``C++
glueContractDef = eth.contract([{"constant":false,"type":"function","inputs":[{"name":"RingSignedData","type":"string"},{"name":"CxtCallParams","type":"bytes"}],"name":"combine","outputs":[{"name":"RingSignedData","type":"string"},{"name":"CxtCallParams","type":"bytes"}]}]);
glueContract = glueContractDef.at("0x0000000000000000000000000000000000000000")
combinedData = glueContract.combine.getData(ringSignData, cxtInterfaceCallData)
10.send privacy transaction
sendTx = personal.sendPrivacyCxtTransaction({from:addrTokenHolder, to:contractAddr, value:0, data: combinedData, gasprice:'0x' + (200000000000).toString(16)}, privateKeyTokenHolder)
wait(function(){return eth.getTransaction(sendTx).blockNumber != null;});
- check balance
ota2Balance = erc20simple.privacyBalance(addrOTAAcc2)
if (ota2Balance != priTranValue) {
throw Error("ota2 balance wrong. balance:" + ota2Balance + ", expect:" + priTranValue)
}
ota1Balance = erc20simple.privacyBalance(addrTokenHolder)
if (ota1Balance != initPriBalance - priTranValue) {
throw Error("ota2 balance wrong. balance:" + ota1Balance + ", expect:" + (initPriBalance - priTranValue))
}
How--to-deploy-smart-contracts-on的更多相关文章
- Smart Contracts
A smart contract is a computer code running on top of a blockchain containing a set of rules under w ...
- Solidity 中文文档 —— 第一章：Introduction to Smart Contracts
第一章:智能合约简介 粗略地翻译了 Ethereum 的智能合约开发语言的文档:Solidity.欢迎转载,注明出处. 有任何问题请联系我,本人微信:wx1076869692,更多详情见文末. 我是 ...
- Using APIs in Your Ethereum Smart Contract with Oraclize
Homepage Coinmonks HOMEFILTER ▼BLOCKCHAIN TUTORIALSCRYPTO ECONOMYTOP READSCONTRIBUTEFORUM & JOBS ...
- 【翻译】A Next-Generation Smart Contract and Decentralized Application Platform
原文链接:https://github.com/ethereum/wiki/wiki/White-Paper 当中本聪在2009年1月启动比特币区块链时,他同时向世界引入了两种未经测试的革命性的新概念 ...
- the security of smart contract- 1
https://blog.zeppelin.solutions/the-hitchhikers-guide-to-smart-contracts-in-ethereum-848f08001f05 这个 ...
- ethereum/EIPs-1271 smart contract
https://github.com/PhABC/EIPs/blob/is-valid-signature/EIPS/eip-1271.md Standard Signature Validation ...
- openzeppelin-solidity/contracts的代码学习——payment
payment - A collection of smart contracts that can be used to manage payments through escrow arrange ...
- openzeppelin-solidity/contracts的代码学习——access
https://github.com/OpenZeppelin/openzeppelin-solidity/tree/master/contracts/access access - Smart co ...
- etherlime-4-Etherlime CLI
Etherlime CLI命令行界面 Installing & Help Syntax语法 npm i -g etherlime Install the global etherlime to ...
随机推荐
- 创建银行分行的API
DECLARE p_api_version NUMBER := 1.0; p_init_msg_list VARCHAR2(1) := 'F'; v_bank_id NUMBER := 530705; ...
- ubuntu opengl 开发
开发环境: eclipse,需要安装C++开发插件,在自带的源中查找安装C++开发工具包即可 下载安装gl库: sudo apt-get install libgl1-mesa-dev 下载安装glu ...
- 随机采样和随机模拟：吉布斯采样Gibbs Sampling实现高斯分布参数推断
http://blog.csdn.net/pipisorry/article/details/51539739 吉布斯采样的实现问题 本文主要说明如何通过吉布斯采样来采样截断多维高斯分布的参数(已知一 ...
- android自定义View-继承
介绍anroid通过继承系统的控件自定义view 方法是通过对OnDraw()方法进行复写来实现的 举例继承TextView 在textView的背景加上矩形的效果 代码实现 testView的代码 ...
- 4. React 属性和状态介绍
React 中的属性和状态初看之下可以互相替代,但是在 React 的设计哲学中两者有着截然不同的使用方式和使用场景. 属性的含义和用法 props = propert ...
- spark概念、编程模型和模块概述
http://blog.csdn.net/pipisorry/article/details/50931274 spark基本概念 Spark一种与 Hadoop 相似的通用的集群计算框架,通过将大量 ...
- android 中List转换String，String转换List 改进版本
原来博客地址http://blog.csdn.net/qq7342272/article/details/6830907 使用原作者贴的代码不是很好用,不能正常运行,所以我稍微改进了一下,特来分享给大 ...
- Mybatis执行BatchExecutor（四）
BatchExecutor:顾名思义就是进行批量操作,通过批量操作来提高性能 public class BatchExecutor extends BaseExecutor { public stat ...
- 面试常用算法总结——排序算法（java版）
排序算法 重要性不言而喻,很多算法问题往往选择一个好的排序算法往往问题可以迎刃而解 1.冒泡算法 冒泡排序(Bubble Sort)也是一种简单直观的排序算法.它重复地走访过要排序的数列,一次比较两个 ...
- 【一天一道LeetCode】#85. Maximal Rectangle
一天一道LeetCode 本系列文章已全部上传至我的github,地址:ZeeCoder's Github 欢迎大家关注我的新浪微博,我的新浪微博 欢迎转载,转载请注明出处 (一)题目 Given a ...