/// <summary>
/// Creates a QuickPass from the given <paramref name="password"/> and
/// <paramref name="imk"/> using the QuickPass settings stored in
/// <paramref name="identity"/>, stores it in memory and establishes a
/// timer that will clear the QuickPass after the timeout set forth in
/// <paramref name="identity"/>'s QuickPass settings.
/// </summary>
/// <param name="password">The full identity master password.</param>
/// <param name="imk">The identity's unencrypted Identity Master Key (IMK).</param>
/// <param name="ilk">The identity's unencrypted Identity Lock Key (ILK).</param>
/// <param name="identity">The identity that the QuickPass should be set for.</param>
/// <param name="progress">An object implementing the IProgress interface for tracking the operation's progress (optional).</param>
/// <param name="progressText">A string representing a text descrition for the progress indicator (optional).</param>
public async void SetQuickPass(string password, byte[] imk, byte[] ilk, SQRLIdentity identity, IProgress <KeyValuePair <int, string> > progress = null, string progressText = null)
{
if (string.IsNullOrEmpty(password))
{
Log.Warning("Can't use QuickPass on an empty password, aborting SetQuickPass()!");
return;
}
QuickPassItem qpi = new QuickPassItem()
{
EstablishedDate = DateTime.Now,
QuickPassLength = identity.Block1.HintLength,
IdentityUniqueId = identity.Block0.UniqueIdentifier.ToHex(),
ScryptRandomSalt = SodiumCore.GetRandomBytes(16),
Nonce = SodiumCore.GetRandomBytes(24),
QuickPassTimeoutSecs = identity.Block1.PwdTimeoutMins * 60,
ClearQuickPassOnIdle = identity.Block1.OptionFlags.ClearQuickPassOnIdle,
ClearQuickPassOnSleep = identity.Block1.OptionFlags.ClearQuickPassOnSleep,
ClearQuickPassOnSwitchingUser = identity.Block1.OptionFlags.ClearQuickPassOnSwitchingUser,
Timer = new Timer()
};
qpi.Timer.Enabled = false;
qpi.Timer.AutoReset = false; // Dont restart timer after calling elapsed
qpi.Timer.Interval = QP_GENERAL_TIMEOUT_SEC;
qpi.Timer.Elapsed += QuickPassTimerElapsed;
string quickPass = password.Substring(0, qpi.QuickPassLength);
var enScryptResult = await SQRL.EnScryptTime(
quickPass,
qpi.ScryptRandomSalt,
(int)Math.Pow(2, 9),
QP_KEYDERIV_SEC,
progress,
progressText);
qpi.ScryptIterationCount = enScryptResult.IterationCount;
qpi.EncryptedImk = StreamEncryption.Encrypt(imk, qpi.Nonce, enScryptResult.Key);
qpi.EncryptedIlk = StreamEncryption.Encrypt(ilk, qpi.Nonce, enScryptResult.Key);
// If we already have a QuickPass entry for this identity, remove it first
if (HasQuickPass(qpi.IdentityUniqueId))
{
ClearQuickPass(qpi.IdentityUniqueId, QuickPassClearReason.Unspecified);
}
// Now, add the QuickPass item to our list and start the timer
lock (_dataSyncObj)
{
_quickPassItems.Add(qpi.IdentityUniqueId, qpi);
qpi.Timer.Start();
}
Log.Information("QuickPass set for identity {IdentityUniqueId}",
qpi.IdentityUniqueId);
}
