vue使用gm-crypto对数据进行sm4加密处理

npm i gm-crypto//安装gm-crypto

创建一份gmCrypt.js文件

const { SM4 } = require("gm-crypto");

export default function(params) {
  if (typeof params == "undefined") {
    params = null;
  }
	//秘钥与IV要与后端一致，秘钥和iv若医师16进制格式，则无需转换
  // 原始 base64 密钥
  const base64Key = "XXXXXXXXXXXXXXXXXXXXX";

  // 将 base64 密钥转换为 32 位十六进制字符串
  const keyBuffer = Buffer.from(base64Key, "base64");
  let keyHex32 = keyBuffer.toString("hex");

  // 确保是 32 位十六进制字符串（16字节 * 2）
  if (keyHex32.length < 32) {
    keyHex32 = keyHex32.padStart(32, "0");
  } else if (keyHex32.length > 32) {
    keyHex32 = keyHex32.substring(0, 32);
  }


  // IV 参数（CBC模式需要）
  const base64Iv = "XXXXXXXXXXXXXXXXXXXXXX";
  const ivBuffer = Buffer.from(base64Iv, "base64");
  let ivHex32 = ivBuffer.toString("hex");

  // 确保 IV 也是 32 位十六进制字符串
  if (ivHex32.length < 32) {
    ivHex32 = ivHex32.padStart(32, "0");
  } else if (ivHex32.length > 32) {
    ivHex32 = ivHex32.substring(0, 32);
  }
  try {
    // 加密
    const _encryptedData = SM4.encrypt(params, keyHex32, {
      inputEncoding: "utf8",
      outputEncoding: "base64",
      iv: ivHex32,
      mode: SM4.constants.CBC,
    });
    // 解密
    const _decryptedData = SM4.decrypt(_encryptedData, keyHex32, {
      iv: ivHex32,
      mode: SM4.constants.CBC,
      inputEncoding: "base64",
      outputEncoding: "utf8",
    });
    return _encryptedData;
  } catch (error) {
    console.error("SM4加密失败:", error);
    throw error;
  }
}

在页面中使用

//导入
import GmCrypt from "../util/gmCrypt";
//使用
const _stringifyData = '需要sm4加密处理的数据'
const _sm4Data = GmCrypt(_stringifyData);
console.log("_sm4Data ", _sm4Data );