/// <summary>获取HMAC-SHA256加密后的十六进制值
/// </summary>
/// <param name="source">字符串</param>
/// <param name="key">密钥字符串</param>
/// <param name="sourceEncode">编码</param>
/// <param name="keyEncode">密钥编码</param>
/// <returns>转换成16进制后的字符串</returns>
public static string GetHex16StringHMACSHA256(string source, string key = "12345678", string sourceEncode = "utf-8", string keyEncode = "utf-8")
{
var hashBytes = GetHMACSHA256(Encoding.GetEncoding(sourceEncode).GetBytes(source), Encoding.GetEncoding(keyEncode).GetBytes(key));
return(ByteBufferUtil.ByteBufferToHex16(hashBytes));
}