use password hash instead of the plain password to encrypt the private key

apps/encryption/controller/settingscontroller.php

apps/encryption/hooks/userhooks.php

apps/encryption/lib/crypto/crypt.php

apps/encryption/lib/keymanager.php

apps/encryption/lib/recovery.php

apps/encryption/tests/controller/SettingsControllerTest.php

apps/encryption/tests/hooks/UserHooksTest.php

apps/encryption/tests/lib/KeyManagerTest.php

apps/encryption/tests/lib/RecoveryTest.php

apps/encryption/tests/lib/crypto/cryptTest.php

apps/encryption/vendor/pbkdf2fallback.php