99 lines
2.7 KiB
JavaScript
99 lines
2.7 KiB
JavaScript
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/**
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* @class UniCrypto 数据加密服务
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* @function init 初始化函数
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* @function showConfig 返回配置信息函数
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* @function getCrypto 返回原始crypto对象函数
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* @function aesEncode AES加密函数
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* @function aesDecode AES解密函数
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* @function md5 MD5加密函数
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*/
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const crypto = require('crypto')
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module.exports = class UniCrypto {
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constructor(config) {
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this.init(config)
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}
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/**
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* 配置初始化函数
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* @param {Object} config
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*/
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init(config) {
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this.config = {
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//AES加密默认参数
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AES: {
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mod: 'aes-128-cbc',
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pasword: 'UniStat!010',
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iv: 'UniStativ',
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charset: 'utf8',
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encodeReturnType: 'base64'
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},
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//MD5加密默认参数
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MD5: {
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encodeReturnType: 'hex'
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},
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...config || {}
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}
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return this
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}
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/**
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* 返回配置信息函数
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*/
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showConfig() {
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return this.config
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}
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/**
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* 返回原始crypto对象函数
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*/
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getCrypto() {
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return crypto
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}
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/**
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* AES加密函数
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* @param {String} data 加密数据明文
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* @param {String} encodeReturnType 返回加密数据类型，如：base64
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* @param {String} key 密钥
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* @param {String} iv 偏移量
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* @param {String} mod 模式
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* @param {String} charset 编码
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*/
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aesEncode(data, encodeReturnType, key, iv, mod, charset) {
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const cipher = crypto.createCipheriv(mod || this.config.AES.mod, key || this.config.AES.pasword, iv ||
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this.config.AES.iv)
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let crypted = cipher.update(data, charset || this.config.AES.charset, 'binary')
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crypted += cipher.final('binary')
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crypted = Buffer.from(crypted, 'binary').toString(encodeReturnType || this.config.AES.encodeReturnType)
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return crypted
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}
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/**
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* AES解密函数
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* @param {Object} crypted 加密数据密文
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* @param {Object} encodeReturnType 返回加密数据类型，如：base64
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* @param {Object} key 密钥
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* @param {Object} iv 偏移量
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* @param {Object} mod 模式
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* @param {Object} charset 编码
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*/
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aesDecode(crypted, encodeReturnType, key, iv, mod, charset) {
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crypted = Buffer.from(crypted, encodeReturnType || this.config.AES.encodeReturnType).toString('binary')
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const decipher = crypto.createDecipheriv(mod || this.config.AES.mod, key || this.config.AES.pasword,
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iv || this.config.AES.iv)
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let decoded = decipher.update(crypted, 'binary', charset || this.config.AES.charset)
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decoded += decipher.final(charset || this.config.AES.charset)
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return decoded
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}
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/**
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* @param {Object} str 加密字符串
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* @param {Object} encodeReturnType encodeReturnType 返回加密数据类型，如：hex(转为16进制)
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*/
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md5(str, encodeReturnType) {
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const md5Mod = crypto.createHash('md5')
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md5Mod.update(str)
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return md5Mod.digest(encodeReturnType || this.config.MD5.encodeReturnType)
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}
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}
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