如何操作Node.Js生成比特币地址-tutorial js-php.cn

这次给大家带来如何操作Node.Js生成比特币地址，操作Node.Js生成比特币地址的注意事项有哪些，下面就是实战案例，一起来看一下。

使用Node.js，IDE采用sublime 3。

var randomBytes = require('randombytes') var BigInteger = require('bigi') var ecurve = require('ecurve') var crypto = require('crypto') var cs = require('coinstring') var secp256k1 = ecurve.getCurveByName('secp256k1') var randombytes = randomBytes(32).toString('hex') var privateKey = new Buffer(randombytes, 'hex') console.log("私钥:" + privateKey.toString('hex')) var ecparams = ecurve.getCurveByName('secp256k1') var curvePt = ecparams.G.multiply(BigInteger.fromBuffer(privateKey)) var x = curvePt.affineX.toBuffer(32) var y = curvePt.affineY.toBuffer(32) var publicKey = Buffer.concat([new Buffer([0x04]), x, y]) console.log("标准地址:" + publicKey.toString('hex')) //compressed publicKey = curvePt.getEncoded(true) //true forces compressed public key console.log("compressed:" + publicKey.toString('hex')) var sha = crypto.createHash('sha256').update(publicKey).digest() var pubkeyHash = crypto.createHash('rmd160').update(sha).digest() // pubkeyHash of compressed public key console.log("pubkeyHash:" + pubkeyHash.toString('hex')) // address of compressed public key console.log("压缩地址：" + cs.encode(pubkeyHash, 0x0)) //<-- 0x0 is for public addresses //这里还缺失校验和Base58编码 console.log(cs.encode(privateKey, 0x80)) //<--- 0x80 is for private addresses console.log(cs.encode(Buffer.concat([privateKey, new Buffer([0])]), 0x80)) // <-- compressed private address

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生成比特币地址

1.生成随机私钥，私钥是一个32字节的数例如：

8F72F6B29E6E225A36B68DFE333C7CE5E55D83249D3D2CD6332671FA445C4DD3

2.椭圆曲线计算公钥生成了私钥之后，我们使用椭圆曲线加密算法（ECDSA-secp256k1）计算私钥所对应的非压缩公钥，生成的公钥共65字节，第一个字节是0x04，后32个字节是X坐标，32个字节是Y坐标：公钥P.X：