浏览器端rsa加密方案

// 他们github有提供 forge.min.js ， 不用webpack的项目也可以直接引用
import forge from 'node-forge'

const message = '要加密我了' // 原文长度有限制，而且中文还要url编码，所以不能加密太长的字符串。一般也只用来加密密码。
const publicKey = '-----BEGIN PUBLIC KEY-----\nMIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCqM+l9ZWy1Frt6felFFLmfZNls\nVbU1dKpF8Rx83FtKCsztO5k/iV5N9BbfHFUg9Y40b/EK2j/BPc1xlLYAHMXn6563\nXCwZ4IuCxvfOwz9qT9gkKBxkI5b0rnikkSWTGlJEk2PdZ7Plc73Fa+bx3PvuKvMd\ncKWvd80+vt9+b/7hrwIDAQAB\n-----END PUBLIC KEY-----'
const publicK = forge.pki.publicKeyFromPem(publicKey)
const encrypted = publicK.encrypt(encodeURIComponent(message), 'RSA-OAEP') // 经过url编码，后端解密后需要url解码
console.log('密文：', encrypted) // 虽然乱码，但可以直接发给后端解密

const forge = require('node-forge')
const privateKey = '-----BEGIN PRIVATE KEY-----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\nez4Cc4ksMedxdA==\n-----END PRIVATE KEY-----\n'
const privateK = forge.pki.privateKeyFromPem(privateKey)
const decrypted = privateK.decrypt(encrypted, 'RSA-OAEP') // encrypted 为前端传过来的密文
console.log('原文：', decodeURIComponent(decrypted)) // decrypted 为原文