以太坊ethereum 离线生成帐号，计算私钥，进行签名

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我是靠谱客的博主诚心蜜粉，最近开发中收集的这篇文章主要介绍以太坊ethereum 离线生成帐号，计算私钥，进行签名，觉得挺不错的，现在分享给大家，希望可以做个参考。

概述

<script src="dist/keythereum.js" type="text/javascript"></script>
<script src="dist/bundle.js" type="text/javascript"></script>

<script>


function createAccount(){
	var newAccountpwd = document.getElementById('createpwd').value;
	console.log( "密码为："+newAccountpwd);
	var params = { keyBytes: 32, ivBytes: 16 };
	var dk = keythereum.create(params)
	var options = {
	  kdf: "scrypt",
	  cipher: "aes-128-ctr",
	  kdfparams: {
		n:262144,
		r : 8,
		p : 1,
		dklen: 32
	  }
	};


	var keyObject = keythereum.dump(newAccountpwd, dk.privateKey, dk.salt, dk.iv, options);
	
	document.getElementById('newcreate').innerHTML = JSON.stringify(keyObject);
}

function clean()
{

	document.getElementById('signResult').innerHTML = '';
	
	document.getElementById('signResulttest').innerHTML = '';
}

function shuzuTo16Str(as){
	var rtnStr = '';
	for(j = 0,len=as.length; j < len; j++) {
		rtnStr += as[j].toString(16);
	}
	
	return '0x' + rtnStr;
   
	}	
	
	
const txDatatext = {
 from:'0x06EDaF5dC947b8409F4c26c8577Ed7290bF591e9',
 to:'0x7854C8a4DbC0AB7E639626db2db11A4bD7D59D9E',
 value: '0x8AC7230489E80000',
 nonce: 115,
 gas : "0x76c0",
 gasPrice: '0x9184e72a000'

}
	
function getSign(){

	var privatekey = document.getElementById('private').innerHTML
	console.log("私钥"+ privatekey);
	var Data = document.getElementById('signStr').value;
	
	var objData = JSON.parse(Data);
	let { sign, verify, unsign } = window.ethereumjs_tx_sign;
	var out = sign(objData,privatekey);

	var newout = JSON.parse(JSON.stringify(out));
	
	var privatekey2 = document.getElementById('private').innerHTML;
	var testSign = sign(txDatatext,privatekey2);
	var newtestSign = JSON.parse(JSON.stringify(testSign));
	
	//rawTx
	document.getElementById('signResult').innerHTML = newout.rawTx;
	
	document.getElementById('signResulttest').innerHTML = newtestSign.rawTx;


}

function getPrivate(){


	
	var jsonStr = document.getElementById('jsonStr').value;
	console.log(jsonStr);
	var keyObject = JSON.parse(jsonStr);
	
	var pwd =  document.getElementById('pwd').value;
	console.log(pwd);
	
	var privatekey = keythereum.recover(pwd,keyObject);
	
	
	var newKey = JSON.parse(JSON.stringify(privatekey));
	
	document.getElementById('private').innerHTML 
	= shuzuTo16Str(newKey.data) ;
	
	console.log(privatekey);


}



var options = {
  kdf: "scrypt",
  cipher: "aes-128-ctr",
  kdfparams: {
    dklen:32,
	n:262144,
	p:1,
	r:8,
	
  }
};


</script>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
</head>
<h2>账号生成</h2>

输入密码: <input type="text" id="createpwd" />
<button type="button" onclick = "createAccount()" >生成账号</button>
<p id = 'newcreate'>生成账号</p>
<textarea id = "jsonStr" rows="10" cols="120">
{"address":"a983b670e3bce5aaf2ebc6643c8bca245c167cec","crypto":{"cipher":"aes-128-ctr","ciphertext":"d5576192b093f9e9dc02c066bfeaf024a7ecef2de8369a3c6c6a2c9da8d6d5b8","cipherparams":{"iv":"67129f36c72a3c19b8a931009bda1df8"},"mac":"b57200f427ea213cbf067ca77ffe9d1b14b4a0f5c20f4046ad7ceb33fc9e388a","kdf":"scrypt","kdfparams":{"dklen":32,"n":262144,"r":8,"p":1,"salt":"af6e63ec4abf6cc80d836ff6e611ca0c6e5dedda9d96bbc5ab7bc458b993fbe6"}},"id":"530089f1-618c-41c3-a480-a2affc8a74b3","version":3}
</textarea>

</br>
输入密码: <input type="text" id="pwd" />



<button type="button" onclick = "getPrivate()" >获取到私钥</button>(会进行计算一段时间，密码错误会报错)  私钥为 :<h2 id = "private"></h2>

<textarea id = "signStr" rows="10" cols="120">
{"from":"0xa983b670e3bce5aaf2ebc6643c8bca245c167cec",
 "to":"0x7854C8a4DbC0AB7E639626db2db11A4bD7D59D9E",
 "value": "0x8AC7230489E80000",
 "nonce": 115,
 "gas" : "0x76c0",
 "gasPrice": "0x9184e72a000"
 }
</textarea>
</br>
<button type="button" onclick = "getSign()" >进行签名</button>
<button type="button" onclick = "clean()" >重置签名结果</button>
（签名之前需要先计算出私钥） 调用geth sendRawTransaction 的时候 注意获取到nonce
<h2 id = "signResult">签名结果</h2>

</br>
<h2 id = "signResulttest">签名结果比对</h2>

测试代码如上（测试环境chrome）：

主要使用的为两个js文件（从github下载）

csdn下载地址：http://download.csdn.net/download/kyou007/10224729

由于不是太明白js和nodejs的区别许多js方法使用有一定问题，望高手解答疑问。