Add nitrokey as a dependency to nitrocli

The nitrokey crate provides a simple interface to the Nitrokey Storage
and the Nitrokey Pro based on the libnitrokey library developed by
Nitrokey UG.  The low-level bindings to this library are available in
the nitrokey-sys crate.

This patch adds version v0.2.1 of the nitrokey crate as a dependency
for nitrocli.  It includes the indirect dependencies nitrokey-sys
(version 3.4.1) and rand (version 0.4.3).

Import subrepo nitrokey/:nitrokey at 2eccc96ceec2282b868891befe9cda7f941fbe7b
Import subrepo nitrokey-sys/:nitrokey-sys at f1a11ebf72610fb9cf80ac7f9f147b4ba1a5336f
Import subrepo rand/:rand at d7d5da49daf7ceb3e5940072940d495cced3a1b3

5 files changed, 745 insertions, 0 deletions

diff --git a/nitrokey/src/tests/device.rs b/nitrokey/src/tests/device.rs
new file mode 100644
index 0000000..fed465d
--- /dev/null
+++ b/nitrokey/src/tests/device.rs
@@ -0,0 +1,304 @@
+use std::ffi::CStr;
+use std::process::Command;
+use std::{thread, time};
+use tests::util::{Target, ADMIN_PASSWORD, USER_PASSWORD};
+use {Authenticate, CommandError, Config, Device, Storage};
+
+static ADMIN_NEW_PASSWORD: &str = "1234567890";
+static USER_NEW_PASSWORD: &str = "abcdefghij";
+
+fn count_nitrokey_block_devices() -> usize {
+    thread::sleep(time::Duration::from_secs(2));
+    let output = Command::new("lsblk")
+        .args(&["-o", "MODEL"])
+        .output()
+        .expect("Could not list block devices");
+    String::from_utf8_lossy(&output.stdout)
+        .split("\n")
+        .filter(|&s| s == "Nitrokey Storage")
+        .count()
+}
+
+#[test]
+#[cfg_attr(not(feature = "test-no-device"), ignore)]
+fn connect_no_device() {
+    assert!(::connect().is_err());
+    assert!(::Pro::connect().is_err());
+    assert!(::Storage::connect().is_err());
+}
+
+#[test]
+#[cfg_attr(not(feature = "test-pro"), ignore)]
+fn connect_pro() {
+    assert!(::connect().is_ok());
+    assert!(::Pro::connect().is_ok());
+    assert!(::Storage::connect().is_err());
+    match ::connect().unwrap() {
+        ::DeviceWrapper::Pro(_) => assert!(true),
+        ::DeviceWrapper::Storage(_) => assert!(false),
+    };
+}
+
+#[test]
+#[cfg_attr(not(feature = "test-storage"), ignore)]
+fn connect_storage() {
+    assert!(::connect().is_ok());
+    assert!(::Pro::connect().is_err());
+    assert!(::Storage::connect().is_ok());
+    match ::connect().unwrap() {
+        ::DeviceWrapper::Pro(_) => assert!(false),
+        ::DeviceWrapper::Storage(_) => assert!(true),
+    };
+}
+
+fn assert_empty_serial_number() {
+    unsafe {
+        let ptr = ::nitrokey_sys::NK_device_serial_number();
+        assert!(!ptr.is_null());
+        let cstr = CStr::from_ptr(ptr);
+        assert_eq!(cstr.to_string_lossy(), "");
+    }
+}
+
+#[test]
+#[cfg_attr(not(any(feature = "test-pro", feature = "test-storage")), ignore)]
+fn disconnect() {
+    Target::connect().unwrap();
+    assert_empty_serial_number();
+    Target::connect()
+        .unwrap()
+        .authenticate_admin(ADMIN_PASSWORD)
+        .unwrap();
+    assert_empty_serial_number();
+    Target::connect()
+        .unwrap()
+        .authenticate_user(USER_PASSWORD)
+        .unwrap();
+    assert_empty_serial_number();
+}
+
+#[test]
+#[cfg_attr(not(any(feature = "test-pro", feature = "test-storage")), ignore)]
+fn get_serial_number() {
+    let device = Target::connect().unwrap();
+    let result = device.get_serial_number();
+    assert!(result.is_ok());
+    let serial_number = result.unwrap();
+    assert!(serial_number.is_ascii());
+    assert!(serial_number.chars().all(|c| c.is_ascii_hexdigit()));
+}
+#[test]
+#[cfg_attr(not(feature = "test-pro"), ignore)]
+fn get_firmware_version() {
+    let device = Target::connect().unwrap();
+    assert_eq!(0, device.get_major_firmware_version());
+    let minor = device.get_minor_firmware_version();
+    assert!(minor > 0);
+}
+
+fn admin_retry<T: Authenticate + Device>(device: T, suffix: &str, count: u8) -> T {
+    let result = device.authenticate_admin(&(ADMIN_PASSWORD.to_owned() + suffix));
+    let device = match result {
+        Ok(admin) => admin.device(),
+        Err((device, _)) => device,
+    };
+    assert_eq!(count, device.get_admin_retry_count());
+    return device;
+}
+
+fn user_retry<T: Authenticate + Device>(device: T, suffix: &str, count: u8) -> T {
+    let result = device.authenticate_user(&(USER_PASSWORD.to_owned() + suffix));
+    let device = match result {
+        Ok(admin) => admin.device(),
+        Err((device, _)) => device,
+    };
+    assert_eq!(count, device.get_user_retry_count());
+    return device;
+}
+
+#[test]
+#[cfg_attr(not(any(feature = "test-pro", feature = "test-storage")), ignore)]
+fn get_retry_count() {
+    let device = Target::connect().unwrap();
+
+    let device = admin_retry(device, "", 3);
+    let device = admin_retry(device, "123", 2);
+    let device = admin_retry(device, "456", 1);
+    let device = admin_retry(device, "", 3);
+
+    let device = user_retry(device, "", 3);
+    let device = user_retry(device, "123", 2);
+    let device = user_retry(device, "456", 1);
+    user_retry(device, "", 3);
+}
+
+#[test]
+#[cfg_attr(not(any(feature = "test-pro", feature = "test-storage")), ignore)]
+fn config() {
+    let device = Target::connect().unwrap();
+    let admin = device.authenticate_admin(ADMIN_PASSWORD).unwrap();
+    let config = Config::new(None, None, None, true);
+    assert!(admin.write_config(config).is_ok());
+    let get_config = admin.get_config().unwrap();
+    assert_eq!(config, get_config);
+
+    let config = Config::new(None, Some(9), None, true);
+    assert_eq!(Err(CommandError::InvalidSlot), admin.write_config(config));
+
+    let config = Config::new(Some(1), None, Some(0), false);
+    assert!(admin.write_config(config).is_ok());
+    let get_config = admin.get_config().unwrap();
+    assert_eq!(config, get_config);
+
+    let config = Config::new(None, None, None, false);
+    assert!(admin.write_config(config).is_ok());
+    let get_config = admin.get_config().unwrap();
+    assert_eq!(config, get_config);
+}
+
+#[test]
+#[cfg_attr(not(any(feature = "test-pro", feature = "test-storage")), ignore)]
+fn change_user_pin() {
+    let device = Target::connect().unwrap();
+    let device = device.authenticate_user(USER_PASSWORD).unwrap().device();
+    let device = device.authenticate_user(USER_NEW_PASSWORD).unwrap_err().0;
+
+    assert!(
+        device
+            .change_user_pin(USER_PASSWORD, USER_NEW_PASSWORD)
+            .is_ok()
+    );
+
+    let device = device.authenticate_user(USER_PASSWORD).unwrap_err().0;
+    let device = device
+        .authenticate_user(USER_NEW_PASSWORD)
+        .unwrap()
+        .device();
+
+    let result = device.change_user_pin(USER_PASSWORD, USER_PASSWORD);
+    assert_eq!(Err(CommandError::WrongPassword), result);
+
+    assert!(
+        device
+            .change_user_pin(USER_NEW_PASSWORD, USER_PASSWORD)
+            .is_ok()
+    );
+
+    let device = device.authenticate_user(USER_PASSWORD).unwrap().device();
+    assert!(device.authenticate_user(USER_NEW_PASSWORD).is_err());
+}
+
+#[test]
+#[cfg_attr(not(any(feature = "test-pro", feature = "test-storage")), ignore)]
+fn change_admin_pin() {
+    let device = Target::connect().unwrap();
+    let device = device.authenticate_admin(ADMIN_PASSWORD).unwrap().device();
+    let device = device.authenticate_admin(ADMIN_NEW_PASSWORD).unwrap_err().0;
+
+    assert!(
+        device
+            .change_admin_pin(ADMIN_PASSWORD, ADMIN_NEW_PASSWORD)
+            .is_ok()
+    );
+
+    let device = device.authenticate_admin(ADMIN_PASSWORD).unwrap_err().0;
+    let device = device
+        .authenticate_admin(ADMIN_NEW_PASSWORD)
+        .unwrap()
+        .device();
+
+    assert_eq!(
+        Err(CommandError::WrongPassword),
+        device.change_admin_pin(ADMIN_PASSWORD, ADMIN_PASSWORD)
+    );
+
+    assert!(
+        device
+            .change_admin_pin(ADMIN_NEW_PASSWORD, ADMIN_PASSWORD)
+            .is_ok()
+    );
+
+    let device = device.authenticate_admin(ADMIN_PASSWORD).unwrap().device();
+    device.authenticate_admin(ADMIN_NEW_PASSWORD).unwrap_err();
+}
+
+fn require_failed_user_login(device: Target, password: &str, error: CommandError) -> Target {
+    let result = device.authenticate_user(password);
+    assert!(result.is_err());
+    let err = result.unwrap_err();
+    assert_eq!(error, err.1);
+    err.0
+}
+
+#[test]
+#[cfg_attr(not(any(feature = "test-pro", feature = "test-storage")), ignore)]
+fn unlock_user_pin() {
+    let device = Target::connect().unwrap();
+    let device = device.authenticate_user(USER_PASSWORD).unwrap().device();
+    assert!(
+        device
+            .unlock_user_pin(ADMIN_PASSWORD, USER_PASSWORD)
+            .is_ok()
+    );
+    assert_eq!(
+        Err(CommandError::WrongPassword),
+        device.unlock_user_pin(USER_PASSWORD, USER_PASSWORD)
+    );
+
+    let wrong_password = USER_PASSWORD.to_owned() + "foo";
+    let device = require_failed_user_login(device, &wrong_password, CommandError::WrongPassword);
+    let device = require_failed_user_login(device, &wrong_password, CommandError::WrongPassword);
+    let device = require_failed_user_login(device, &wrong_password, CommandError::WrongPassword);
+    let device = require_failed_user_login(device, USER_PASSWORD, CommandError::WrongPassword);
+
+    assert_eq!(
+        Err(CommandError::WrongPassword),
+        device.unlock_user_pin(USER_PASSWORD, USER_PASSWORD)
+    );
+    assert!(
+        device
+            .unlock_user_pin(ADMIN_PASSWORD, USER_PASSWORD)
+            .is_ok()
+    );
+    device.authenticate_user(USER_PASSWORD).unwrap();
+}
+
+#[test]
+#[cfg_attr(not(feature = "test-storage"), ignore)]
+fn encrypted_volume() {
+    let device = Storage::connect().unwrap();
+    assert!(device.lock().is_ok());
+
+    assert_eq!(1, count_nitrokey_block_devices());
+    assert!(device.disable_encrypted_volume().is_ok());
+    assert_eq!(1, count_nitrokey_block_devices());
+    assert_eq!(
+        Err(CommandError::WrongPassword),
+        device.enable_encrypted_volume("123")
+    );
+    assert_eq!(1, count_nitrokey_block_devices());
+    assert!(device.enable_encrypted_volume(USER_PASSWORD).is_ok());
+    assert_eq!(2, count_nitrokey_block_devices());
+    assert!(device.disable_encrypted_volume().is_ok());
+    assert_eq!(1, count_nitrokey_block_devices());
+}
+
+#[test]
+#[cfg_attr(not(feature = "test-storage"), ignore)]
+fn lock() {
+    let device = Storage::connect().unwrap();
+
+    assert!(device.enable_encrypted_volume(USER_PASSWORD).is_ok());
+    assert!(device.lock().is_ok());
+    assert_eq!(1, count_nitrokey_block_devices());
+}
+
+#[test]
+#[cfg_attr(not(feature = "test-storage"), ignore)]
+fn get_storage_status() {
+    let device = Storage::connect().unwrap();
+    let status = device.get_status().unwrap();
+
+    assert!(status.serial_number_sd_card > 0);
+    assert!(status.serial_number_smart_card > 0);
+}
diff --git a/nitrokey/src/tests/mod.rs b/nitrokey/src/tests/mod.rs
new file mode 100644
index 0000000..34ca0aa
--- /dev/null
+++ b/nitrokey/src/tests/mod.rs
@@ -0,0 +1,4 @@
+mod device;
+mod otp;
+mod pws;
+mod util;
diff --git a/nitrokey/src/tests/otp.rs b/nitrokey/src/tests/otp.rs
new file mode 100644
index 0000000..cf71d9d
--- /dev/null
+++ b/nitrokey/src/tests/otp.rs
@@ -0,0 +1,283 @@
+use std::ops::Deref;
+use tests::util::{Target, ADMIN_PASSWORD, USER_PASSWORD};
+use {Admin, Authenticate, CommandError, Config, ConfigureOtp, GenerateOtp, OtpMode, OtpSlotData};
+
+// test suite according to RFC 4226, Appendix D
+static HOTP_SECRET: &str = "3132333435363738393031323334353637383930";
+static HOTP_CODES: &[&str] = &[
+    "755224", "287082", "359152", "969429", "338314", "254676", "287922", "162583", "399871",
+    "520489",
+];
+
+// test suite according to RFC 6238, Appendix B
+static TOTP_SECRET: &str = "3132333435363738393031323334353637383930";
+static TOTP_CODES: &[(u64, &str)] = &[
+    (59, "94287082"),
+    (1111111109, "07081804"),
+    (1111111111, "14050471"),
+    (1234567890, "89005924"),
+    (2000000000, "69279037"),
+    (20000000000, "65353130"),
+];
+
+#[derive(PartialEq)]
+enum TotpTimestampSize {
+    U32,
+    U64,
+}
+
+fn get_admin_test_device() -> Admin<Target> {
+    Target::connect()
+        .expect("Could not connect to the Nitrokey.")
+        .authenticate_admin(ADMIN_PASSWORD)
+        .expect("Could not login as admin.")
+}
+
+fn configure_hotp(admin: &ConfigureOtp, counter: u8) {
+    let slot_data = OtpSlotData::new(1, "test-hotp", HOTP_SECRET, OtpMode::SixDigits);
+    assert!(admin.write_hotp_slot(slot_data, counter.into()).is_ok());
+}
+
+fn check_hotp_codes(device: &GenerateOtp, offset: u8) {
+    HOTP_CODES.iter().enumerate().for_each(|(i, code)| {
+        if i >= offset as usize {
+            let result = device.get_hotp_code(1);
+            assert_eq!(code, &result.unwrap());
+        }
+    });
+}
+
+#[test]
+#[cfg_attr(not(any(feature = "test-pro", feature = "test-storage")), ignore)]
+fn hotp_no_pin() {
+    let admin = get_admin_test_device();
+    let config = Config::new(None, None, None, false);
+    assert!(admin.write_config(config).is_ok());
+
+    configure_hotp(&admin, 0);
+    check_hotp_codes(admin.deref(), 0);
+
+    configure_hotp(&admin, 5);
+    check_hotp_codes(admin.deref(), 5);
+
+    configure_hotp(&admin, 0);
+    check_hotp_codes(&admin.device(), 0);
+}
+
+#[test]
+#[cfg_attr(not(any(feature = "test-pro", feature = "test-storage")), ignore)]
+fn hotp_pin() {
+    let admin = get_admin_test_device();
+    let config = Config::new(None, None, None, true);
+    assert!(admin.write_config(config).is_ok());
+
+    configure_hotp(&admin, 0);
+    let user = admin.device().authenticate_user(USER_PASSWORD).unwrap();
+    check_hotp_codes(&user, 0);
+
+    assert!(user.device().get_hotp_code(1).is_err());
+}
+
+#[test]
+#[cfg_attr(not(any(feature = "test-pro", feature = "test-storage")), ignore)]
+fn hotp_slot_name() {
+    let admin = get_admin_test_device();
+    let slot_data = OtpSlotData::new(1, "test-hotp", HOTP_SECRET, OtpMode::SixDigits);
+    assert!(admin.write_hotp_slot(slot_data, 0).is_ok());
+
+    let device = admin.device();
+    let result = device.get_hotp_slot_name(1);
+    assert_eq!("test-hotp", result.unwrap());
+    let result = device.get_hotp_slot_name(4);
+    assert_eq!(CommandError::InvalidSlot, result.unwrap_err());
+}
+
+#[test]
+#[cfg_attr(not(any(feature = "test-pro", feature = "test-storage")), ignore)]
+fn hotp_error() {
+    let admin = get_admin_test_device();
+    let slot_data = OtpSlotData::new(1, "", HOTP_SECRET, OtpMode::SixDigits);
+    assert_eq!(
+        Err(CommandError::NoName),
+        admin.write_hotp_slot(slot_data, 0)
+    );
+    let slot_data = OtpSlotData::new(4, "test", HOTP_SECRET, OtpMode::SixDigits);
+    assert_eq!(
+        Err(CommandError::InvalidSlot),
+        admin.write_hotp_slot(slot_data, 0)
+    );
+    let code = admin.get_hotp_code(4);
+    assert_eq!(CommandError::InvalidSlot, code.unwrap_err());
+}
+
+#[test]
+#[cfg_attr(not(any(feature = "test-pro", feature = "test-storage")), ignore)]
+fn hotp_erase() {
+    let admin = get_admin_test_device();
+    let config = Config::new(None, None, None, false);
+    assert!(admin.write_config(config).is_ok());
+    let slot_data = OtpSlotData::new(1, "test1", HOTP_SECRET, OtpMode::SixDigits);
+    assert!(admin.write_hotp_slot(slot_data, 0).is_ok());
+    let slot_data = OtpSlotData::new(2, "test2", HOTP_SECRET, OtpMode::SixDigits);
+    assert!(admin.write_hotp_slot(slot_data, 0).is_ok());
+
+    assert!(admin.erase_hotp_slot(1).is_ok());
+
+    let device = admin.device();
+    let result = device.get_hotp_slot_name(1);
+    assert_eq!(CommandError::SlotNotProgrammed, result.unwrap_err());
+    let result = device.get_hotp_code(1);
+    assert_eq!(CommandError::SlotNotProgrammed, result.unwrap_err());
+
+    assert_eq!("test2", device.get_hotp_slot_name(2).unwrap());
+}
+
+fn configure_totp(admin: &ConfigureOtp, factor: u64) {
+    let slot_data = OtpSlotData::new(1, "test-totp", TOTP_SECRET, OtpMode::EightDigits);
+    let time_window = 30u64.checked_mul(factor).unwrap();
+    assert!(admin.write_totp_slot(slot_data, time_window as u16).is_ok());
+}
+
+fn check_totp_codes(device: &GenerateOtp, factor: u64, timestamp_size: TotpTimestampSize) {
+    for (i, &(base_time, code)) in TOTP_CODES.iter().enumerate() {
+        let time = base_time.checked_mul(factor).unwrap();
+        let is_u64 = time > u32::max_value() as u64;
+        if is_u64 != (timestamp_size == TotpTimestampSize::U64) {
+            continue;
+        }
+
+        assert!(device.set_time(time).is_ok());
+        let result = device.get_totp_code(1);
+        assert!(result.is_ok());
+        let result_code = result.unwrap();
+        assert_eq!(
+            code, result_code,
+            "TOTP code {} should be {} but is {}",
+            i, code, result_code
+        );
+    }
+}
+
+#[test]
+#[cfg_attr(not(any(feature = "test-pro", feature = "test-storage")), ignore)]
+fn totp_no_pin() {
+    // TODO: this test may fail due to bad timing --> find solution
+    let admin = get_admin_test_device();
+    let config = Config::new(None, None, None, false);
+    assert!(admin.write_config(config).is_ok());
+
+    configure_totp(&admin, 1);
+    check_totp_codes(admin.deref(), 1, TotpTimestampSize::U32);
+
+    configure_totp(&admin, 2);
+    check_totp_codes(admin.deref(), 2, TotpTimestampSize::U32);
+
+    configure_totp(&admin, 1);
+    check_totp_codes(&admin.device(), 1, TotpTimestampSize::U32);
+}
+
+#[test]
+#[cfg_attr(not(any(feature = "test-pro", feature = "test-storage")), ignore)]
+#[cfg_attr(feature = "test-storage", should_panic(expected = "assertion failed"))]
+// Nitrokey Storage does only support timestamps that fit in a 32-bit unsigned integer.  Therefore
+// the last RFC test case is expected to fail.
+fn totp_no_pin_64() {
+    let admin = get_admin_test_device();
+    let config = Config::new(None, None, None, false);
+    assert!(admin.write_config(config).is_ok());
+
+    configure_totp(&admin, 1);
+    check_totp_codes(admin.deref(), 1, TotpTimestampSize::U64);
+
+    configure_totp(&admin, 2);
+    check_totp_codes(admin.deref(), 2, TotpTimestampSize::U64);
+
+    configure_totp(&admin, 1);
+    check_totp_codes(&admin.device(), 1, TotpTimestampSize::U64);
+}
+
+#[test]
+#[cfg_attr(not(any(feature = "test-pro", feature = "test-storage")), ignore)]
+fn totp_pin() {
+    // TODO: this test may fail due to bad timing --> find solution
+    let admin = get_admin_test_device();
+    let config = Config::new(None, None, None, true);
+    assert!(admin.write_config(config).is_ok());
+
+    configure_totp(&admin, 1);
+    let user = admin.device().authenticate_user(USER_PASSWORD).unwrap();
+    check_totp_codes(&user, 1, TotpTimestampSize::U32);
+
+    assert!(user.device().get_totp_code(1).is_err());
+}
+
+#[test]
+#[cfg_attr(not(any(feature = "test-pro", feature = "test-storage")), ignore)]
+#[cfg_attr(feature = "test-storage", should_panic(expected = "assertion failed"))]
+// See comment for totp_no_pin_64.
+fn totp_pin_64() {
+    let admin = get_admin_test_device();
+    let config = Config::new(None, None, None, true);
+    assert!(admin.write_config(config).is_ok());
+
+    configure_totp(&admin, 1);
+    let user = admin.device().authenticate_user(USER_PASSWORD).unwrap();
+    check_totp_codes(&user, 1, TotpTimestampSize::U64);
+
+    assert!(user.device().get_totp_code(1).is_err());
+}
+
+#[test]
+#[cfg_attr(not(any(feature = "test-pro", feature = "test-storage")), ignore)]
+fn totp_slot_name() {
+    let admin = get_admin_test_device();
+    let slot_data = OtpSlotData::new(1, "test-totp", TOTP_SECRET, OtpMode::EightDigits);
+    assert!(admin.write_totp_slot(slot_data, 0).is_ok());
+
+    let device = admin.device();
+    let result = device.get_totp_slot_name(1);
+    assert!(result.is_ok());
+    assert_eq!("test-totp", result.unwrap());
+    let result = device.get_totp_slot_name(16);
+    assert_eq!(CommandError::InvalidSlot, result.unwrap_err());
+}
+
+#[test]
+#[cfg_attr(not(any(feature = "test-pro", feature = "test-storage")), ignore)]
+fn totp_error() {
+    let admin = get_admin_test_device();
+    let slot_data = OtpSlotData::new(1, "", HOTP_SECRET, OtpMode::SixDigits);
+    assert_eq!(
+        Err(CommandError::NoName),
+        admin.write_hotp_slot(slot_data, 0)
+    );
+    let slot_data = OtpSlotData::new(4, "test", HOTP_SECRET, OtpMode::SixDigits);
+    assert_eq!(
+        Err(CommandError::InvalidSlot),
+        admin.write_hotp_slot(slot_data, 0)
+    );
+    let code = admin.get_hotp_code(4);
+    assert_eq!(CommandError::InvalidSlot, code.unwrap_err());
+}
+
+#[test]
+#[cfg_attr(not(any(feature = "test-pro", feature = "test-storage")), ignore)]
+fn totp_erase() {
+    let admin = get_admin_test_device();
+    let config = Config::new(None, None, None, false);
+    assert!(admin.write_config(config).is_ok());
+    let slot_data = OtpSlotData::new(1, "test1", TOTP_SECRET, OtpMode::SixDigits);
+    assert!(admin.write_totp_slot(slot_data, 0).is_ok());
+    let slot_data = OtpSlotData::new(2, "test2", TOTP_SECRET, OtpMode::SixDigits);
+    assert!(admin.write_totp_slot(slot_data, 0).is_ok());
+
+    assert!(admin.erase_totp_slot(1).is_ok());
+
+    let device = admin.device();
+    let result = device.get_totp_slot_name(1);
+    assert_eq!(CommandError::SlotNotProgrammed, result.unwrap_err());
+    let result = device.get_totp_code(1);
+    assert_eq!(CommandError::SlotNotProgrammed, result.unwrap_err());
+
+    assert_eq!("test2", device.get_totp_slot_name(2).unwrap());
+}
diff --git a/nitrokey/src/tests/pws.rs b/nitrokey/src/tests/pws.rs
new file mode 100644
index 0000000..f581515
--- /dev/null
+++ b/nitrokey/src/tests/pws.rs
@@ -0,0 +1,143 @@
+use device::Device;
+use nitrokey_sys;
+use pws::{GetPasswordSafe, PasswordSafe, SLOT_COUNT};
+use tests::util::{Target, ADMIN_PASSWORD, USER_PASSWORD};
+use util::{result_from_string, CommandError};
+
+fn get_pws(device: &Target) -> PasswordSafe {
+    device.get_password_safe(USER_PASSWORD).unwrap()
+}
+
+#[test]
+#[cfg_attr(not(any(feature = "test-pro", feature = "test-storage")), ignore)]
+fn enable() {
+    let device = Target::connect().unwrap();
+    assert!(
+        device
+            .get_password_safe(&(USER_PASSWORD.to_owned() + "123"))
+            .is_err()
+    );
+    assert!(device.get_password_safe(USER_PASSWORD).is_ok());
+    assert!(device.get_password_safe(ADMIN_PASSWORD).is_err());
+    assert!(device.get_password_safe(USER_PASSWORD).is_ok());
+}
+
+#[test]
+#[cfg_attr(not(any(feature = "test-pro", feature = "test-storage")), ignore)]
+fn drop() {
+    let device = Target::connect().unwrap();
+    {
+        let pws = get_pws(&device);
+        assert!(pws.write_slot(1, "name", "login", "password").is_ok());
+        assert_eq!("name", pws.get_slot_name(1).unwrap());
+        let result = result_from_string(unsafe { nitrokey_sys::NK_get_password_safe_slot_name(1) });
+        assert_eq!(Ok(String::from("name")), result);
+    }
+    let result = result_from_string(unsafe { nitrokey_sys::NK_get_password_safe_slot_name(1) });
+    assert_eq!(Ok(String::from("name")), result);
+    assert!(device.lock().is_ok());
+    let result = result_from_string(unsafe { nitrokey_sys::NK_get_password_safe_slot_name(1) });
+    assert_eq!(Err(CommandError::NotAuthorized), result);
+}
+
+#[test]
+#[cfg_attr(not(any(feature = "test-pro", feature = "test-storage")), ignore)]
+fn get_status() {
+    let device = Target::connect().unwrap();
+    let pws = get_pws(&device);
+    for i in 0..SLOT_COUNT {
+        assert!(pws.erase_slot(i).is_ok(), "Could not erase slot {}", i);
+    }
+    let status = pws.get_slot_status().unwrap();
+    assert_eq!(status, [false; SLOT_COUNT as usize]);
+
+    assert!(pws.write_slot(1, "name", "login", "password").is_ok());
+    let status = pws.get_slot_status().unwrap();
+    for i in 0..SLOT_COUNT {
+        assert_eq!(i == 1, status[i as usize]);
+    }
+
+    for i in 0..SLOT_COUNT {
+        assert!(pws.write_slot(i, "name", "login", "password").is_ok());
+    }
+    let status = pws.get_slot_status().unwrap();
+    assert_eq!(status, [true; SLOT_COUNT as usize]);
+}
+
+#[test]
+#[cfg_attr(not(any(feature = "test-pro", feature = "test-storage")), ignore)]
+fn get_data() {
+    let device = Target::connect().unwrap();
+    let pws = get_pws(&device);
+    assert!(pws.write_slot(1, "name", "login", "password").is_ok());
+    assert_eq!("name", pws.get_slot_name(1).unwrap());
+    assert_eq!("login", pws.get_slot_login(1).unwrap());
+    assert_eq!("password", pws.get_slot_password(1).unwrap());
+
+    assert!(pws.erase_slot(1).is_ok());
+    // TODO: check error codes
+    assert_eq!(Err(CommandError::Unknown), pws.get_slot_name(1));
+    assert_eq!(Err(CommandError::Unknown), pws.get_slot_login(1));
+    assert_eq!(Err(CommandError::Unknown), pws.get_slot_password(1));
+
+    let name = "with å";
+    let login = "pär@test.com";
+    let password = "'i3lJc[09?I:,[u7dWz9";
+    assert!(pws.write_slot(1, name, login, password).is_ok());
+    assert_eq!(name, pws.get_slot_name(1).unwrap());
+    assert_eq!(login, pws.get_slot_login(1).unwrap());
+    assert_eq!(password, pws.get_slot_password(1).unwrap());
+
+    assert_eq!(
+        Err(CommandError::InvalidSlot),
+        pws.get_slot_name(SLOT_COUNT)
+    );
+    assert_eq!(
+        Err(CommandError::InvalidSlot),
+        pws.get_slot_login(SLOT_COUNT)
+    );
+    assert_eq!(
+        Err(CommandError::InvalidSlot),
+        pws.get_slot_password(SLOT_COUNT)
+    );
+}
+
+#[test]
+#[cfg_attr(not(any(feature = "test-pro", feature = "test-storage")), ignore)]
+fn write() {
+    let device = Target::connect().unwrap();
+    let pws = get_pws(&device);
+
+    assert_eq!(
+        Err(CommandError::InvalidSlot),
+        pws.write_slot(SLOT_COUNT, "name", "login", "password")
+    );
+
+    assert!(pws.write_slot(0, "", "login", "password").is_ok());
+    assert_eq!(Err(CommandError::Unknown), pws.get_slot_name(0));
+    assert_eq!(Ok(String::from("login")), pws.get_slot_login(0));
+    assert_eq!(Ok(String::from("password")), pws.get_slot_password(0));
+
+    assert!(pws.write_slot(0, "name", "", "password").is_ok());
+    assert_eq!(Ok(String::from("name")), pws.get_slot_name(0));
+    assert_eq!(Err(CommandError::Unknown), pws.get_slot_login(0));
+    assert_eq!(Ok(String::from("password")), pws.get_slot_password(0));
+
+    assert!(pws.write_slot(0, "name", "login", "").is_ok());
+    assert_eq!(Ok(String::from("name")), pws.get_slot_name(0));
+    assert_eq!(Ok(String::from("login")), pws.get_slot_login(0));
+    assert_eq!(Err(CommandError::Unknown), pws.get_slot_password(0));
+}
+
+#[test]
+#[cfg_attr(not(any(feature = "test-pro", feature = "test-storage")), ignore)]
+fn erase() {
+    let device = Target::connect().unwrap();
+    let pws = get_pws(&device);
+    assert_eq!(Err(CommandError::InvalidSlot), pws.erase_slot(SLOT_COUNT));
+
+    assert!(pws.write_slot(0, "name", "login", "password").is_ok());
+    assert!(pws.erase_slot(0).is_ok());
+    assert!(pws.erase_slot(0).is_ok());
+    assert_eq!(Err(CommandError::Unknown), pws.get_slot_name(0));
+}
diff --git a/nitrokey/src/tests/util.rs b/nitrokey/src/tests/util.rs
new file mode 100644
index 0000000..c6fbb8f
--- /dev/null
+++ b/nitrokey/src/tests/util.rs
@@ -0,0 +1,11 @@
+pub static ADMIN_PASSWORD: &str = "12345678";
+pub static USER_PASSWORD: &str = "123456";
+
+#[cfg(feature = "test-no-device")]
+pub type Target = ::Pro;
+
+#[cfg(feature = "test-pro")]
+pub type Target = ::Pro;
+
+#[cfg(feature = "test-storage")]
+pub type Target = ::Storage;