/// <summary>
/// Produces a token for a specific Steam ID. This token is signed by this server to prevent abuse. It can be checked later by any DeltaWebMap server.
/// </summary>
/// <returns></returns>
public string CreateSteamIdTokenString(string steamId)
{
//Create a buffer for the message
byte[] buffer = new byte[16 + 1 + Encoding.ASCII.GetByteCount(steamId)];
//Write buffer contents
steamTokenKey.CopyTo(buffer, 0);
buffer[16] = 0x01;
Encoding.ASCII.GetBytes(steamId, 0, steamId.Length, buffer, 17);
//Create HMAC and write it
byte[] hash = new HMACMD5(steamTokenKey).ComputeHash(buffer);
if (hash.Length != 16)
{
throw new Exception("Invalid hash length.");
}
hash.CopyTo(buffer, 0);
//Return the BASE64 version of this
return(Convert.ToBase64String(buffer));
}
