/// <summary>Attempts to get cached key from the given key.</summary>
/// <param name="databasePath">Full path of the database file.</param>
/// <param name="data">[out] The data.</param>
/// <returns>true if it succeeds, false if it fails.</returns>
private bool TryGetCachedKey(string databasePath, out QuickUnlockData data)
{
lock (unlockCache)
{
return(unlockCache.TryGetValue(databasePath, out data));
}
}
/// <summary>Adds a database-key mapping.</summary>
/// <param name="databasePath">Full path of the database file.</param>
/// <param name="pin">The pin to unlock the database.</param>
/// <param name="keys">The keys used to encrypt the database.</param>
public void AddCachedKey(string databasePath, ProtectedString pin, CompositeKey keys)
{
Contract.Requires(!string.IsNullOrEmpty(databasePath));
Contract.Requires(pin != null);
Contract.Requires(keys != null);
var validPeriod = KeePassQuickUnlockExt.Host.CustomConfig.GetULong(CfgValidPeriod, VALID_DEFAULT);
lock (unlockCache)
{
unlockCache[databasePath] = new QuickUnlockData
{
ValidUntil = validPeriod == VALID_UNLIMITED ? DateTime.MaxValue : DateTime.Now.AddSeconds(validPeriod),
UnlockKey = pin.WithProtection(true),
ComposedKey = keys.CombineKeys()
};
}
}
/// <summary>Adds a database-key mapping.</summary>
/// <param name="databasePath">Full path of the database file.</param>
/// <param name="pin">The pin to unlock the database.</param>
/// <param name="keys">The keys used to encrypt the database.</param>
public void AddCachedKey(string databasePath, ProtectedString pin, CompositeKey keys)
{
Contract.Requires(!string.IsNullOrEmpty(databasePath));
Contract.Requires(pin != null);
Contract.Requires(keys != null);
var validPeriod = KeePassQuickUnlockExt.Host.CustomConfig.GetULong(CfgValidPeriod, VALID_DEFAULT);
lock (unlockCache)
{
var cn = CreateCipher(pin);
unlockCache[databasePath] = new QuickUnlockData
{
ValidUntil = validPeriod == VALID_UNLIMITED ? DateTime.MaxValue : DateTime.Now.AddSeconds(validPeriod),
Nonce = cn.Item2,
ComposedKey = keys.CombineKeys().Encrypt(cn.Item1)
};
cn.Item1.Dispose();
}
}
