public static byte[] GetBytes(byte[] key1, TokenBlob1 blob1)
{
using (HMACSHA1 sha1 = new HMACSHA1(key1))
{
byte[] username = blob1.GetBytes(sha1.HashSize / 8);
sha1.ComputeHash(username, 0, blob1.Size);
Array.Copy(sha1.Hash, 0, username, blob1.Size, sha1.HashSize / 8);
return(username);
}
}
public static byte[] GetBytes(byte[] key1, TokenBlob1 blob1)
{
using (HMACSHA1 sha1 = new HMACSHA1(key1))
{
byte[] username = blob1.GetBytes(sha1.HashSize / 8);
sha1.ComputeHash(username, 0, blob1.Size);
Array.Copy(sha1.Hash, 0, username, blob1.Size, sha1.HashSize / 8);
return username;
}
}
private CredentialsResponse Process(CredentialsRequest credentialsRequest, int versionMajor)
{
TokenBlob1 tokenBlob = (versionMajor == 1) ? new TokenBlob1() : new TokenBlob2();
using (HMACSHA1 sha1 = new HMACSHA1(key0))
{
UTF8Encoding utf8 = new UTF8Encoding();
tokenBlob.ClientID = sha1.ComputeHash(utf8.GetBytes(credentialsRequest.Identity));
}
byte[] username = Username.GetBytes(Key1, tokenBlob);
byte[] password = Password.GetBytes(Key2, username);
IEnumerable <MediaRelay> mediaRelays1 = null, mediaRelays2 = null;
if (credentialsRequest.Location == null || credentialsRequest.Location == Location.Intranet)
{
mediaRelays2 = intranetServers.Select <TurnServerInfo, MediaRelay>(
turnServer => new MediaRelay()
{
Location = Location.Intranet,
HostName = turnServer.Fqdn,
TcpPort = turnServer.TcpPort,
UdpPort = turnServer.UdpPort,
});
}
if (credentialsRequest.Location == null || credentialsRequest.Location == Location.Internet)
{
mediaRelays2 = internetServers.Select <TurnServerInfo, MediaRelay>(
turnServer => new MediaRelay()
{
Location = Location.Internet,
HostName = turnServer.Fqdn,
TcpPort = turnServer.TcpPort,
UdpPort = turnServer.UdpPort,
});
}
return(new CredentialsResponse()
{
CredentialsRequestID = credentialsRequest.CredentialsRequestID,
Duration = Math.Min(credentialsRequest.Duration, Duration),
Username = Convert.ToBase64String(username),
Password = Convert.ToBase64String(password),
MediaRelays1 = mediaRelays1,
MediaRelays2 = mediaRelays2,
});
}
