/// <inheritdoc />
public async Task InitializeFirstTimeAndGenerate(string password, string protectedStoreFileName = "Excalibur.Store")
{
// Store the password
_password = password;
try
{
_protectedStore.Initialize(DeviceKey(), protectedStoreFileName);
}
catch (ProtectedStoreException)
{
_protectedStore.Remove();
_protectedStore.Terminate();
_protectedStore.Initialize(DeviceKey(), protectedStoreFileName);
}
// We generate an encryption key for the protected store key
var keySalt = _crypto.GenerateRandom(32);
var key = _crypto.CreateDerivedKey(_password, keySalt);
// Generate some salt we use for encrypting / decrypting just the combinationKey
var combinationKeySalt = _crypto.GenerateRandom(32);
await _protectedStore.Save(ProtectedStoreDeviceSaltIdentifier, Convert.ToBase64String(combinationKeySalt)).ConfigureAwait(false);
// We encrypt the key with the above information and store it for later use
var keyEncrypted = _crypto.EncryptFromBytes(key, DeviceKey(), combinationKeySalt);
await _protectedStore.Save(ProtectedStoreKeyIdentifier, Convert.ToBase64String(keyEncrypted)).ConfigureAwait(false);
// We need some salt for storage encryption
var storeSalt = _crypto.GenerateRandom(32);
await _protectedStore.Save(ProtectedStoreSaltIdentifier, Convert.ToBase64String(storeSalt)).ConfigureAwait(false);
await EncryptAndStoreTest().ConfigureAwait(false);
HasBeenInitialized = true;
}
/// <inheritdoc />
public void Clear()
{
_password = null;
_protectedStore.Terminate();
HasBeenInitialized = false;
}