internal static byte[] GetCredentials()
{
// unique credential should be at least these symbols; comp-name, sid, app-code
// obscure the code and shift in file; make it hard to find
string user = GetComputerName() + GetUserSid() + "x0024b88t72:im@vtc#s1d1";
using (Keccak256 digest = new Keccak256())
return digest.ComputeHash(Encoding.UTF8.GetBytes(user));
}
private void OnGenerateButtonClick(object sender, EventArgs e)
{
byte[] data = Encoding.UTF8.GetBytes(txtPassphrase.Text);
using (Keccak256 digest = new Keccak256())
Passphrase = digest.ComputeHash(data);
this.Hide();
}
internal static byte[] GetDomainId()
{
string domain = GetDomainName();
if (string.IsNullOrEmpty(domain))
domain = GetComputerName();
int blockSize = domain.Length < 32 ? 32 : domain.Length;
byte[] data = new byte[blockSize];
byte[] name = Encoding.UTF8.GetBytes(domain);
Buffer.BlockCopy(name, 0, data, 0, name.Length);
using (Keccak256 digest = new Keccak256())
return digest.ComputeHash(Encoding.UTF8.GetBytes(domain));
}
internal static byte[] GetOriginId()
{
string user = GetUserName() + GetUserSid();
byte[] hash;
using (Keccak256 digest = new Keccak256())
hash = digest.ComputeHash(Encoding.UTF8.GetBytes(user));
byte[] id = new byte[16];
for (int i = 0, j = 16; i < 16; i++, j++)
id[i] = (byte)(hash[i] ^ hash[j]);
return id;
}