WAVECONTROL SMP2 - Page 90

Example c# code to generate the MD5
using System;
using System.text;
using System.Security.Cryptography;
private string AddMd5(string cmd)
{
String formatted_xml = cmd;
String result = string.Empty;
string[] string_parts;
/* Add a <md5>MD5_VALUE</md5> tag before the closing </cmd> tag. */
if (!formatted_xml.Contains(“<md5>”))
{
/* Split result: before “</cmd>” and after “</cmd>”: */
string[] tokenizer = new string[1];
tokenizer[0] = “</cmd>”;
string_parts = formatted_xml.Split(tokenizer, 3,
StringSplitOptions.None);
if (string_parts.Length == 2)
{
//Calculate MD5 of the chunk before “</cmd>
using (var md5 = MD5.Create())
{
string md5_str = BitConverter.ToString(md5.
ComputeHash(Encoding.UTF8.GetBytes(string_parts[0]))).Replace(“-”, “”).ToLower();
//Add it to the result
result = string_parts[0] + “<md5>” + md5_str + “</md5></
cmd>”;
}
}
}
return result;
}
User’s Manual Electromagnetic Field Meter SMP2 P. 88