JS中DES加密函数

已知c#语法的DES加密函数如下

private static readonly string key = "sufei000";

public static string EncryptString(string encryptString, string encryptKey)
        {
            try
            {
                byte[] rgbKey = Encoding.UTF8.GetBytes(encryptKey);
                byte[] rgbIV = { 0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF };
                byte[] inputByteArray = Encoding.UTF8.GetBytes(encryptString);
                DESCryptoServiceProvider dCSP = new DESCryptoServiceProvider();
                MemoryStream mStream = new MemoryStream();
                CryptoStream cStream = new CryptoStream(mStream, dCSP.CreateEncryptor(rgbKey, rgbIV), CryptoStreamMode.Write);
                cStream.Write(inputByteArray, 0, inputByteArray.Length);
                cStream.FlushFinalBlock();
                return Convert.ToBase64String(mStream.ToArray());
            }
            catch
            {
                return encryptString;
            }
        }

//调用：EncryptString("admin@123", key)
//结果：g9+4i2SWuuz0Kfzkgfm1Ag==

请问要如何在JavaScript里实现呢？
这是我仿照的nodejs加密函数：

const key = 'sufei000'
const arr = [0x12, 0x34, 0x56, 0x78, 0x90, 0xab, 0xcd, 0xef]
const iv = new Int8Array(arr).buffer

function encrypt(code, alg) {
    let cipher = crypto.createCipheriv(alg, key, iv);
    cipher.setAutoPadding(true);
    let ciph = cipher.update(code, 'utf8', 'hex');
    ciph += cipher.final('hex')
    console.log('result', ciph)
}

//调用：encrypt('admin@123', 'des-cbc')
//结果：83dfb88b6496baecf429fce481f9b502

按理来说加密算法都是一样的，密钥和初始化向量iv也都是一样的，应该结果会是一样的啊。难道是底层加密函数算法不一样嘛？

c#加密你用的是不是utf8编码