/// <summary>
/// Gets a string which represents a unique signature of this machine based on MAC addresses of interfaces.
/// The signature has a form of: [intf.count]-[CRC32 of all MACs]-[convoluted MD5 of all MACs]
/// </summary>
public static string GetMachineUniqueMACSignature()
{
var nics = NetworkInterface.GetAllNetworkInterfaces();
var buf = new byte[6 * 32];
var ibuf = 0;
var cnt=0;
var csum = new NFX.IO.ErrorHandling.CRC32();
foreach(var nic in nics.Where(a => a.NetworkInterfaceType!=NetworkInterfaceType.Loopback))
{
var mac = nic.GetPhysicalAddress().GetAddressBytes();
csum.Add( mac );
for(var i=0; i<mac.Length; i++)
{
buf[ibuf] = mac[i];
ibuf++;
if(ibuf==buf.Length) ibuf = 0;
}
cnt++;
}
var md5s = new StringBuilder();
using (var md5 = new System.Security.Cryptography.MD5CryptoServiceProvider())
{
var hash = md5.ComputeHash(buf);
for(var i=0 ; i<hash.Length ; i+=2)
md5s.Append( (hash[i]^hash[i+1]).ToString("X2"));
}
return "{0}-{1}-{2}".Args( cnt, csum.Value.ToString("X8"), md5s );
}
/// <summary>
/// Gets a string which represents a unique signature of this machine based on MAC addresses of interfaces.
/// The signature has a form of: [intf.count]-[CRC32 of all MACs]-[convoluted MD5 of all MACs]
/// </summary>
public static string GetMachineUniqueMACSignature()
{
var nics = NetworkInterface.GetAllNetworkInterfaces();
var buf = new byte[6 * 32];
var ibuf = 0;
var cnt = 0;
var csum = new NFX.IO.ErrorHandling.CRC32();
foreach (var nic in nics.Where(a => a.NetworkInterfaceType != NetworkInterfaceType.Loopback))
{
var mac = nic.GetPhysicalAddress().GetAddressBytes();
csum.Add(mac);
for (var i = 0; i < mac.Length; i++)
{
buf[ibuf] = mac[i];
ibuf++;
if (ibuf == buf.Length)
{
ibuf = 0;
}
}
cnt++;
}
var md5s = new StringBuilder();
using (var md5 = new System.Security.Cryptography.MD5CryptoServiceProvider())
{
var hash = md5.ComputeHash(buf);
for (var i = 0; i < hash.Length; i += 2)
{
md5s.Append((hash[i] ^ hash[i + 1]).ToString("X2"));
}
}
return("{0}-{1}-{2}".Args(cnt, csum.Value.ToString("X8"), md5s));
}
