[网络协议]ts http请求rsa加密key，ase加密params

import CryptoJS from 'crypto-js';
import JsEncrypt from 'jsencrypt';

/** 加解密数据类型 */
export interface ICryptProps {
  /** 加密数据 */
  requestData: string;
  /** 加密n位字符串 */
  encrypted: string;
}

/** 加解密模块 */
export class CryptUtil {
  // 公钥
  private publicKey: string;
  // 私钥
  private privateKey: string;
  constructor() {
    // 公钥
    this.publicKey =
      'MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCDlQAiQQllsrbj96NDN/TJPwncO6hFpe3sYnBZGuzLfDyxqZvC3gm2MJIJ+X5uHTyZ30RtyoOEOqxtCuNDrqDPrpb2WREkdkH0MFfEcCWm55/jOof8sU7A9hVTDbmnNMF7/k/WSFvmwb3GpRDJqw8NfXRqTUOn6a/Z8WFNWK9KxQIDAQAB';
    // 私钥
    this.privateKey =
      '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';
  }
  /** 生成n位随机16进制字符串 */
  randomKeys(n: number): string {
    const charList = 'ABCDEFGHJKMNPQRSTWXYZabcdefhijkmnprstwxyz2345678';
    let str = '',
      len = charList.length;
    for (let i = 0; i < n; i++) {
      str += charList[Math.floor(Math.random() * len)];
    }
    return str;
  }
  /**
   * AES加密原始数据
   * @param params js对象
   * @param randomKey n位16进制随机字符串
   */
  aes_encrypt(params: object, randomKey: string): string {
    const srcs = CryptoJS.enc.Utf8.parse(
      typeof params === 'object' ? JSON.stringify(params) : params,
    );
    const key = CryptoJS.enc.Utf8.parse(randomKey);
    const encryptedParams = CryptoJS.AES.encrypt(srcs, key, {
      mode: CryptoJS.mode.ECB,
      padding: CryptoJS.pad.Pkcs7,
    });
    return encryptedParams.toString();
  }
  /**
   * AES解密加密的json数据
   * @param params 加密后的json字符串
   * @param randomKey n位16进制随机字符串
   */
  aes_decrypt(params: string, randomKey: string) {
    const key = CryptoJS.enc.Utf8.parse(randomKey);
    const decryptParams = CryptoJS.AES.decrypt(params, key, {
      mode: CryptoJS.mode.ECB,
      padding: CryptoJS.pad.Pkcs7,
    });
    return CryptoJS.enc.Utf8.stringify(decryptParams).toString();
  }
  /**
   * rsa算法公钥加密
   * @param params
   */
  rsa_encrypt(params: object | string): string | false {
    const Encrypt = new JsEncrypt();
    Encrypt.setPublicKey(this.publicKey);
    return Encrypt.encrypt(
      typeof params === 'object' ? JSON.stringify(params) : params,
    );
  }
  /**
   * rsa算法私钥解密
   * @param params
   */
  rsa_decrypt(params: object | string) {
    const Decrypt = new JsEncrypt();
    Decrypt.setPrivateKey(this.privateKey);
    return Decrypt.decrypt(
      typeof params === 'object' ? JSON.stringify(params) : params,
    );
  }
  /** 普通对象转换成加密对象 */
  encryptParams(params: object): ICryptProps {
    const randomKey = this.randomKeys(16);
    const requestData = this.aes_encrypt(params, randomKey);
    const encrypted = this.rsa_decrypt(randomKey) || '';
    return {
      requestData,
      encrypted,
    };
  }
  /** 加密对象转换成普通对象 */
  decryptParams(params: ICryptProps): object {
    const { requestData, encrypted } = params;
    const randomKey = this.rsa_decrypt(encrypted) || '';
    return JSON.parse(this.aes_decrypt(requestData, randomKey) || '{}');
  }
}

/** 导出默认实例 */
export default new CryptUtil();