RSA加密 - Vue vue.jsrsa

前言上一篇博客RSA加密 - Java实现了Java版的RSA公钥加密-私钥解密，私钥加密-公钥解密，这篇博客实现Vue下的加解密，记录两种前后端下加解密的场景：

前端公钥加密 - 后端私钥解密
后端私钥加密 - 前端公钥解密

附上其它链接：
RSA加密 - Java
RSA分段加密 - Java
RSA分段解密 - Vue

前端公钥加密-后端私钥解密这种情况较为简单，是通用的做法

安装jsencrypt

npm install jsencrypt
RSAEncryption.js

/** * 非对称加密-RSA * 前端公钥加密 - 后端私钥解密 * */ import { JSEncrypt } from 'jsencrypt/lib/JSEncrypt'// 这里的公钥在Java端生成 const PUBLIC_KEY = 'MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCaaI4MBywkCjIppZnraqN3pbrcZTq/t0+aMBo8K3pK9BDD6XkM6N2Yfcva7BSFbUWuAcI7piXak0UKn9CElDuhNzUSgQn4IXKxIt3Iva5cV83qYumj+0yRjjLT8Muu1Y1rgBZjY9oBwhVoV+Twg25+UJ+6Q6HM4xTwQQJDoyy4jwIDAQAB'; // 注：正常情况下私钥并不会记录在前端，这里使用私钥解密只是记录私钥解密方法 const PRIVATE_KEY = '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'; export const RSAENCRY = { /** * 公钥加密 * @param val 需要加密的字符串 * @return string 返回加密结果 */ encryptByPublicKey: function (val = '') { if(val === ''){ return ''; } let encryptor = new JSEncrypt() // 新建JSEncrypt对象 encryptor.setPublicKey(PUBLIC_KEY) // 设置公钥 return encryptor.encrypt(val) // 对需要加密的数据进行加密 }, /** * 私钥解密 * @param val * @returns {string|false|null|PromiseLike} */ decryptByPrivateKey: function (val = '') { if(val === ''){ return ''; } let decrypt = new JSEncrypt() // 新建JSEncrypt对象 decrypt.setPrivateKey(PRIVATE_KEY) // 设置私钥 return decrypt.decrypt(val) // 对需要解密的数据进行解密 } }
验证加解密

import { RSAENCRY } from "../utils/RSAEncryption"let data = "https://www.it610.com/article/RSA encrypt!"; let encryptDataByPublicKey = RSAENCRY.encryptByPublicKey(data); console.log("encryptDataByPublicKey: ", encryptDataByPublicKey)let decryptDataByPrivateKey = RSAENCRY.decryptByPrivateKey(encryptDataByPublicKey); console.log("decryptDataByPrivateKey: ", decryptDataByPrivateKey)
结果如下

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ok，如图所示，已经实现了常规的前端公钥加密，后端私钥解密

后端私钥加密 - 前端公钥解密这种情况有点牵强，原因是不想将私钥记录在前端，所以由后端私钥加密-前端公钥来解密，后端私钥加密的内容RSA加密 - Java中有记录，这里不再重复，要实现前端公钥解密需要修改配置文件中的内容

从node-modules中复制jsencrypt，这里我复制到了src/libs目录下

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修改src/libs/jsencrypt/lib/lib/jsbn/rsa.js

1. 修改 RSAKey.prototype.decrypt 中 this.doPrivate(c) 为 this.doPublic(c); RSAKey.prototype.decrypt = function (ctext) { var c = parseBigInt(ctext, 16); var m = this.doPublic(c); //var m = this.doPrivate(c); if (m == null) { return null; } return pkcs1unpad2(m, (this.n.bitLength() + 7) >> 3); }; 2. 修改 pkcs1unpad2 注释代码 function pkcs1unpad2(d, n) { var b = d.toByteArray(); var i = 0; while (i < b.length && b[i] == 0) { ++i; } // 注释该处代码 // if (b.length - i != n - 1 || b[i] != 2) { //return null; // } ++i; while (b[i] != 0) { if (++i >= b.length) { return null; } } var ret = ""; while (++i < b.length) { var c = b[i] & 255; if (c < 128) { // utf-8 decode ret += String.fromCharCode(c); } else if ((c > 191) && (c < 224)) { ret += String.fromCharCode(((c & 31) << 6) | (b[i + 1] & 63)); ++i; } else { ret += String.fromCharCode(((c & 15) << 12) | ((b[i + 1] & 63) << 6) | (b[i + 2] & 63)); i += 2; } } return ret; }

RSADecryption.js

/** * 非对称加密-RSA * 后端私钥加密 - 前端公钥解密 */ /** * 非对称加密-RSA * 后端私钥加密 - 前端公钥解密 */ import { JSEncrypt } from '../libs/jsencrypt/lib/JSEncrypt'const PUBLICKEY = 'MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCaaI4MBywkCjIppZnraqN3pbrcZTq/t0+aMBo8K3pK9BDD6XkM6N2Yfcva7BSFbUWuAcI7piXak0UKn9CElDuhNzUSgQn4IXKxIt3Iva5cV83qYumj+0yRjjLT8Muu1Y1rgBZjY9oBwhVoV+Twg25+UJ+6Q6HM4xTwQQJDoyy4jwIDAQAB'; export const RSADECRY = { /** * 公钥解密 * @param secretWord * @returns {解密|string|false|PromiseLike} */ decryptByPublicKey: function (val = '') { if (val === '') { return ''; } let encrypt = new JSEncrypt(); encrypt.setPublicKey(PUBLICKEY); //使用公钥对私钥加密后的数据解密 return encrypt.decrypt(val); } }

调用后端encryByPrivateKey函数生成私钥加密密文

String data = "https://www.it610.com/article/RSA encrypt!"; String encryDataByPrivateKey = encryptByPrivateKey(data); System.out.println("encryDataByPrivateKey: " + encryDataByPrivateKey);

结果如下所示：

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前端公钥解密调用

import { RSADECRY } from "../utils/RSADecryption"let decryptData = "https://www.it610.com/article/AwovsO+xeiFSQe6mN9RRCz3FFlMXdCMcrqbNChsc7PbMfCxSHpKWIHQ2IJ/tw8mFsuX84r7TSVhYXB9ATA7nqWxMnKJgkPu+nFXeXSnApjce0MjFtjLpl9wrklVrOL6L0cmzu3DthC44Opwj5EVWF9tjiH7YdKFVK/Q5HVPKcZk="; let decryptDataByPublicKey = RSADECRY.decryptByPublicKey(decryptData); console.log("decryptDataByPublicKey: ", decryptDataByPublicKey)

结果如下所示：