crypto.js/index.es7

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2020-09-16 20:01:35 +08:00
/**
* 加密类 md5/sha1/base64
* @author yutent<yutent.io@gmail.com>
* @date 2020/09/16 18:11:51
*/
import fs from 'fs'
import Helper from './lib/helper.es7'
var __stamp__ = ''
var __inc__ = 1024
/**
* [base64encode base64编码]
* @param {Str/Num/Buffer} str [要编码的字符串]
* @param {bool} urlFriendly [是否对URL友好默认否是则会把+转成-/转成_]
*/
export function base64encode(str, urlFriendly) {
var buf, str64
if (!Buffer.isBuffer(str)) {
buf = Buffer.from(str + '')
}
str64 = buf.toString('base64')
if (urlFriendly) {
return str64
.replace(/\+/g, '-')
.replace(/\//g, '_')
.replace(/=/g, '')
}
return str64
}
/**
* [base64decode base64解码, 返回Buffer对象]
* @param {Str} str [要解码的字符串]
* @param {bool} urlFriendly [之前是否对结果采用了URL友好处理]
*/
export function base64decode(str, urlFriendly) {
if (urlFriendly) {
str = str
.replace(/-/g, '+')
.replace(/_/g, '/')
.replace(/[^A-Za-z0-9\+\/]/g, '')
}
return Buffer.from(str, 'base64')
}
/**
* [rand 生成指定长度的随机字符串]
* @param {[type]} len [要得到的字符串长度]
* @param {[type]} forceNum [是否强制返回纯数字]
*/
export function rand(len, forceNum) {
let str = 'qwertyuiopasdfghjklzxcvbnmQWERTYUIOPASDFGHJKLZXCVBNM0123456789'
if (forceNum) {
str = '0123456789'
}
let max = str.length
let tmp = ''
for (let i = 0; i < len; i++) {
let r = (Math.random() * max) >> 0
tmp += str[r]
}
return tmp
}
// 返回一个如下格式的 xxxxxxxx-xxxx-xxxx-xxxxxxxx 的唯一ID
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export function uuid(pipe = '-') {
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var rand = Helper.origin.randomBytes(8).toString('hex')
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var now = (~~(Date.now() / 1000)).toString(16)
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var inc
if (__stamp__ === now) {
__inc__++
} else {
__stamp__ = now
__inc__ = 1024
}
inc = __inc__.toString(16).padStart(4, '0')
return (
__stamp__ + pipe + inc + pipe + rand.slice(0, 4) + pipe + rand.slice(-8)
)
}
/**
* [md5 md5加密]
* @param {Str/Num} str [要加密的字符串]
* @param {Str} encode [hex/base64]
*/
export function md5(str, encode) {
if (typeof str === 'number') {
str += ''
}
if (typeof str !== 'string' && !Buffer.isBuffer(str)) {
return str
}
return Helper.hash('md5', str, encode)
}
/**
* [md5Sign 获取文件的md5签名]
* @param {Str} file [文件路径]
*/
export function md5Sign(file) {
if (!fs.existsSync(file)) {
return null
}
var buf = fs.readFileSync(file)
return Helper.hash('md5', buf)
}
/**
* [sha1 sha1加密]
* @param {Str/Num} str [要加密的字符串]
* @param {Str} encode [hex/base64]
*/
export function sha1(str, encode) {
if (typeof str === 'number') {
str += ''
}
if (typeof str !== 'string' && !Buffer.isBuffer(str)) {
return str
}
return Helper.hash('sha1', str, encode)
}
/**
* [sha1Sign 获取文件的sha1签名]
* @param {Str} file [文件路径]
*/
export function sha1Sign(file) {
if (!fs.existsSync(file)) {
return null
}
var buf = fs.readFileSync(file)
return Helper.hash('sha1', buf)
}
/**
* [sha256 sha256加密]
* @param {Str/Num} str [要加密的字符串]
* @param {Str} encoding [hex/base64]
*/
export function sha256(str, encoding) {
if (typeof str === 'number') {
str += ''
}
if (typeof str !== 'string' && !Buffer.isBuffer(str)) {
return str
}
return Helper.hash('sha256', str, encoding)
}
/**
* [sha256Sign 获取文件的sha256签名]
* @param {Str} file [文件路径]
*/
export function sha256Sign(file) {
if (!fs.existsSync(file)) {
return null
}
var buf = fs.readFileSync(file)
return Helper.hash('sha256', buf)
}
export default Helper