feat(ddn-crypto): add ddn-crypto module to to handle all the functions of encryption and decryption

BREAKING CHANGE: Focus on Cryptography

Author: imfly

.eslintrc

@@ -2,7 +2,8 @@
     "env": {
         "commonjs": true,
         "es6": true,
-        "node": true
+        "node": true,
+        "jest": true
     },
     "extends": "eslint:recommended",
     "globals": {

doc/ddn-crypto.md

@@ -0,0 +1,39 @@
+DDN区块链地址的生产与校验
+--------------
+
+## 关于 Base58 字符编码及加密
+
+Base58加密原理：和通常base64编码一样，base58编码的作用也是将非可视字符可视化（ASCII化）。但不同的是base58编码去掉了几个看起来会产生歧义的字符，如 0 (零), O (大写字母O), I (大写的字母i) and l (小写的字母L) ，和几个影响双击选择的字符，如/, +。结果字符集正好58个字符(包括9个数字，24个大写字母，25个小写字母)。
+
+参考：[bs58.js](../packages/ddn-crypto/src/base58check/bs58.js)
+
+## 生成地址
+
+1. 获取一个随机的32字节ECDSA密钥
+
+2. 使用椭圆曲线加密算法计算上述私钥所对应的非压缩公钥
+
+3. 对（压缩）公钥进行SHA-256哈希计算
+
+4. 对步骤2的哈希值进行RIPEMD-160哈希计算
+
+5. 在步骤3的哈希值前添加前缀（主网为0x00，测试网为0xef)
+
+6. 对步骤4的扩展RIPEMD-160哈希值进行SHA256哈希计算
+
+7. 对步骤5的哈希值再次进行SHA256哈希计算
+
+8. 取步骤6结果值的前4个字节作为校验码
+   
+9. 将校验码添加到步骤4的扩展RIPEMD-160哈希值末尾
+
+10. 使用Base58Check编码将结果从字节字符串转换为base58字符串。
+
+## 验证地址
+
+1. 把地址base58解码成字节数组
+2. 把数组分成两个字节数组，字节数组（1）是后4字节数组，字节数组（2）是减去后4字节的数组
+3. 把字节数组（2）两次Sha256 Hash
+4. 取字节数组（2）hash后的前4位，跟字节数组（1）比较。如果相同校验通过。
+5. 校验通过的解码字节数组取第一个字节，地址前缀。
+6. 检验前缀的合法性（根据主网参数校验），注意大小写。

examples/fun-tests/app.js

@@ -8,7 +8,7 @@ const path =require('path');
 const fs =require('fs');
 const { Utils } =require('@ddn/ddn-utils');
 const { getUserConfig } =require('@ddn/ddn-core');
-const Peer = require('@ddn/ddn-peer');
+const Peer = require('@ddn/ddn-peer').default;
 
 /**
  * 整理系统配置文件生成输入参数

packages/ddn-cli/package.json

@@ -1,5 +1,5 @@
 {
-  "name": "@ddn/ddn",
+  "name": "@ddn/ddn-cli",
   "preferGlobal": true,
   "version": "1.0.0",
   "description": "A Command line tool to manage ddn",
@@ -17,30 +17,28 @@
   "author": "HuoDing <hd@qq.com>",
   "license": "MIT",
   "dependencies": {
+    "@ddn/ddn-crypto": "^0.0.1",
     "@ddn/ddn-node-sdk": "^3.0.1",
     "@ddn/ddn-utils": "^1.0.11",
     "async": "1.5.2",
-    "bitcore-mnemonic": "^8.5.1",
     "bytebuffer": "^4.0.0",
     "commander": "^2.8.1",
-    "crypto-browserify": "^3.9.14",
     "download-git-repo": "^3.0.2",
     "fs-extra": "0.30.0",
     "gift": "0.6.1",
     "inquirer": "^7.0.3",
-    "js-nacl": "0.6.0",
     "ora": "^4.0.3",
     "request": "^2.62.0",
     "rmdir": "^1.1.0",
     "symbols": "^0.0.6",
     "valid-url": "1.0.9"
   },
   "bugs": {
-    "url": "http://git.ebookchain.net/ddn/ddn-cli/issues"
+    "url": "https://github.com/ddnlink/ddn/issues"
   },
   "repository": {
     "type": "git",
-    "url": "http://git.ebookchain.net/ddn/ddn-cli.git"
+    "url": "https://github.com/ddnlink/ddn/tree/master/packages/ddn-cli"
   },
-  "homepage": "http://git.ebookchain.net/ddn/ddn-cli"
+  "homepage": "https://github.com/ddnlink/ddn/tree/master/packages/ddn-cli"
 }

packages/ddn-cli/src/base58check/base-x.js

@@ -1,18 +1,4 @@
-var util = require('util');
 var ByteBuffer = require('bytebuffer');
-var crypto = require('./crypto.js');
-
-var bytesTypes = {
-	2: function (trs) {
-		try {
-			var buf = Buffer.from(trs.asset.delegates.list.join(","), 'utf8');
-		} catch (e) {
-			throw Error(e.toString());
-		}
-
-		return buf;
-	}
-}
 
 function getTransactionBytes(trs, skipSignature) {
 

packages/ddn-cli/src/base58check/bs58.js

@@ -1,4 +1,4 @@
-var crypto = require('../crypto.js');
+var crypto = require('@ddn/ddn-crypto');
 
 module.exports = {
 	account: function (secret, tokenPrefix) {