# Accessing the Password Manager

## Setting Up the Password Manager Client

The first step in accessing the Password Manager is to check the registration status by calling the `getRegistrationStatus` method.

{% tabs %}
{% tab title="TypeScript" %}

```typescript
import { RegistrationStatus } from '@sudoplatform/sudo-password-manager'

const status = await client.getRegistrationStatus()
switch (status) {
  case RegistrationStatus.Unregistered:
    // call client.register()
    break
  case RegistrationStatus.SecretCodeRequired:
    // provide the secret code
    // using client.unlock(password, secretCode)
    break
  case RegistrationStatus.Registered:
    // the vault may be unlocked
    // using client.unlock(password)
    break
}
```

{% endtab %}

{% tab title="Swift" %}

```swift
var client: PasswordManagerClient!

client.getRegistrationStatus { (result) in
    switch result {
    case .success(let status):
        switch status {
        case .registered:
            break
        case .notRegistered:
            break
        case .missingSecretCode:
            break
        }
    case .failure(let error):
        break
    }
}
```

{% endtab %}

{% tab title="Kotlin" %}

```kotlin
// val client: SudoPasswordManagerClient

launch {
    try {
        val status = withContext(Dispatchers.IO) {
            client.getRegistrationStatus()
        }
        when(status) {
            PasswordManagerRegistrationStatus.REGISTERED -> {}
            PasswordManagerRegistrationStatus.NOT_REGISTERED -> {}        
            PasswordManagerRegistrationStatus.MISSING_SECRET_CODE -> {}
        }
    } catch (e: SudoPasswordManagerException) {
        // Handle/notify user of exception
    }
}
```

{% endtab %}
{% endtabs %}

If the client is successful in fetching the registration status, a `PasswordManagerRegistrationStatus` will be returned. Inspect this value to determine what to do next to finish the setup of the Password Manager.

* If the registration status is `registered`, the next step is unlocking the Password Manager before accessing items.
* If the registration status is `notRegistered`, register the user by calling the `register` method and passing in the user's master password.
* If the registration status is `missingSecretCode`, the user has already registered on another device. The Password Manager requires the user's master password and secret code. The user can find their secret code on their rescue kit PDF which was downloaded during onboarding.

## Registering to Use the Password Manager

To register as a new user of the Password Manager, call the `register` method and pass in the user's master password. If successful, the client will be registered and the Password Manager will be unlocked and ready to create new vaults.

{% tabs %}
{% tab title="TypeScript" %}

```typescript
const masterPassword = 'P@ssw0rd!'

try {
    await client.register(masterPassword)
} catch {
    // handle/notify user of any registration errors
}
```

{% endtab %}

{% tab title="Swift" %}

```swift
var client: PasswordManagerClient!

client.register(masterPassword: "Can'tCrackThis") { (result) in
    switch result {
        case .success:
            break
        case .failure(let error):
            break
    }
}
```

{% endtab %}

{% tab title="Kotlin" %}

```kotlin
// val client: SudoPasswordManagerClient

launch {
    try {
        withContext(Dispatchers.IO) {
            client.register("P@SSw0rd!")
        }
    } catch (e: SudoPasswordManagerException) {
        // Handle/notify user of exception
    }
}
```

{% endtab %}
{% endtabs %}

## Unlocking the Password Manager

To access the Password Manager, it must first be unlocked by calling the `unlock` method and passing in the user's master password. This method also accepts the user's secret code, which is only required if the registration status returned by `getRegistrationStatus` is `missingSecretCode`.

{% hint style="warning" %}
An error will be returned by `unlock` if the secret code is not provided to `unlock` and not present on the user's device.
{% endhint %}

{% tabs %}
{% tab title="TypeScript" %}

```typescript
const masterPassword = 'P@ssw0rd!'

try {
    // if the client is already registered:
    await client.unlock(masterPassword)

    // otherwise, if the secret code is required:
    const secretCode = '012345-6789a-bcdef-01234-56789-abcdef'
    await client.unlock(masterPassword, secretCode)
} catch {
    // handle/notify user of any unlock errors
}
```

{% endtab %}

{% tab title="Swift" %}

```swift
var client: PasswordManagerClient!

client.unlock(masterPassword: "P@ssw0rd!", secretCode: nil) { (result) in
    switch result {
        case .success:
            break
        case .failure(let error):
            break
    }
}
```

{% endtab %}

{% tab title=" Kotlin" %}

```kotlin
// val client: SudoPasswordManagerClient

launch {
    try {
        withContext(Dispatchers.IO) {
             val secretCode = client.getSecretCode()
             client.unlock("P@SSw0rd!", secretCode)
        }
    } catch (e: SudoPasswordManagerException) {
        // Handle/notify user of exception
    }
}
```

{% endtab %}
{% endtabs %}

Once the Password Manager is unlocked, you can access create/access vaults and their contents.

## Locking the Password Manager

You can use the `isLocked` method to synchronously determine if the Password Manager is locked. If `isLocked` returns false, then the next call to a method that accesses the Password Manager will not fail due to it being locked.

{% tabs %}
{% tab title="TypeScript" %}

```typescript
const isLocked = client.isLocked()
if (client.isLocked()) {
    // the password manager is locked.
    // use the unlock() method before accessing vaults.
} else {
    // the password manager is unlocked.
}
```

{% endtab %}

{% tab title="Swift" %}

```swift
var client: PasswordManagerClient!

if client.isLocked() {
    // the password manager is locked.
    // use the unlock() method before accessing vaults.
} else {
    // the password manager is unlocked.
}
```

{% endtab %}

{% tab title="Kotlin" %}

```kotlin
// val client: SudoPasswordManagerClient

if (client.isLocked()) {                        
     // the password manager is locked.
     // use the unlock() method before accessing vaults.
} else {
     // the password manager is unlocked.
}
```

{% endtab %}
{% endtabs %}

You can use the `lock` method to lock the Password Manager. Use this method in response to user action or after a period of user inactivity.

{% tabs %}
{% tab title="TypeScript" %}

```typescript
client.lock()
// client.isLocked() will now return true.
```

{% endtab %}

{% tab title="Swift" %}

```swift
var client: PasswordManagerClient!

client.lock()
// client.isLocked() will now return true.
```

{% endtab %}

{% tab title="Kotlin" %}

```kotlin
// val client: SudoPasswordManagerClient

launch {
    try {
        withContext(Dispatchers.IO) {
            client.lock()
        }
        // client.isLocked() will now return true.
    } catch (e: SudoPasswordManagerException) {
        // Handle/notify user of exception
    }
}
```

{% endtab %}
{% endtabs %}

## Accessing the Secret Code

Both the master password and secret code must be present to unlock the Password Manager. The secret code is automatically generated during registration and stored on the user's device. To unlock an existing Password Manager for the first time on a new device, you must pass the secret code and master password into the `unlock` method. If the secret code is already stored on the user's device, you do not need to provide it in subsequent calls to the `unlock` method.

You can retrieve the secret code stored on the user's device using the `showSecretCode` method. You should take steps to ensure that the user does not lose their secret code. If they do, they will be unable to unlock their Password Manager vaults.

{% tabs %}
{% tab title="TypeScript" %}

```typescript
try {
    // assuming the client is already registered:
    const secretCode = await client.showSecretCode()
    console.log(secretCode)
} catch (error) {
    if (error instanceof VaultSecretCodeNotFound) {
        // the secret code has not been stored on this device.
    }
}
```

{% endtab %}

{% tab title="Swift" %}

```swift
var client: PasswordManagerClient!

let secretCode = client.getSecretCode()
// returns an optional String
```

{% endtab %}

{% tab title=" Kotlin" %}

```kotlin
// val client: SudoPasswordManagerClient

val secretCode = client.getSecretCode()
```

{% endtab %}
{% endtabs %}

## Generating the Rescue Kit PDF

The Rescue Kit provides a way for users to save and print their secret code with the option to handwrite their master password and email address. This is part of the data recovery in case the user forgets or loses their keys. They should also store this in a safe location.

To generate the Rescue Kit PDF from the SDK you can provide your own PDF template or by default, it will use the Sudo Platform template.

{% tabs %}
{% tab title="TypeScript" %}

```typescript
// Default using the included Sudo Platform Template
const pdfBuffer = await client.renderRescueKit()

// Optional argument for a custom template.
const pdfTemplate = fs.readFileSync('./template.pdf')
const pdfBuffer = await client.renderRescueKit({
  pdfTemplate: pdfTemplate,
})
```

{% endtab %}

{% tab title="Swift" %}

```swift
var client: PasswordManagerClient!
let document: PDFDocument? = client.renderRescueKit()
```

{% endtab %}

{% tab title="Kotlin" %}

```kotlin
// val client: SudoPasswordManagerClient

val doc: PdfDocument = client.renderRescueKit(context)
// write file to cache directory or wherever you wish
val rescueKitFile = File(context.applicationContext.cacheDir, "RescueKit.pdf")
try {
    doc.writeTo(FileOutputStream(rescueKitFile))
} catch (e: SudoPasswordManagerException) {
    // handle error
}
```

{% endtab %}
{% endtabs %}

{% hint style="info" %}
Note that the Secret Code text is added in a specific location on the PDF. The custom template will need to use the same placement.
{% endhint %}

![Password Manager Rescue Kit Example](https://3487472842-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-M2oeXSYkTAXJocuferm%2Fuploads%2Fgit-blob-bcb5dfb2a715554f0583edeef8fdb08c4244ac2a%2FRescueKit_en_US.png?alt=media)

## Changing the Master Password

To change the master password the Password Manager must be unlocked first. After the Password Manager is unlocked, use the `changeMasterPassword` method.

{% tabs %}
{% tab title="TypeScript" %}

```typescript
try {
    const newPassword = 'new-p4ssword'

    await client.changeMasterPassword(newPassword)
} catch (error) {
    // handle/notify user of any password change errors
}
```

{% endtab %}

{% tab title="Swift" %}

```swift
var client: PasswordManagerClient!

guard client.isLocked() == false else { fatalError() }

client.changeMasterPassword(currentPassword: "P@ssw0rd1", newPassword: "N3WPassW0rd") { (result) in
    switch result {
    case .success:
        break
    case .failure(let error):
        break
    }
}
```

{% endtab %}

{% tab title=" Kotlin" %}

```kotlin
// val client: SudoPasswordManagerClient

launch {
    try {
        val currentPassword = "P@SSw0rd!"
        val newPassword = "N3WPassW0rd"
        withContext(Dispatchers.IO) {
             client.changeMasterPassword(currentPassword, newPassword)
        }
    } catch (e: SudoPasswordManagerException) {
        // Handle/notify user of exception
    }
}
```

{% endtab %}
{% endtabs %}

## Deregistering from the Password Manager

To deregister a user from the Password Manager and delete all created vaults and vault items, use the `deregister` method.

{% tabs %}
{% tab title="TypeScript" %}

```javascript
try {
    await client.deregister()
} catch (error) {
    // handle failure to deregister
}
```

{% endtab %}

{% tab title="Swift" %}

```swift
var client: PasswordManagerClient!
try? client.deregister { (result) in
    switch result {
    case .success(let deregisteredUserID):
        break
    case .failure(let error):
        break
    }
}
```

{% endtab %}

{% tab title=" Kotlin" %}

```kotlin
// val client: SudoPasswordManagerClient

launch {
    try {
        withContext(Dispatchers.IO) {
             client.deregister()
        }
    } catch (e: SudoPasswordManagerException) {
        // Handle/notify user of exception
    }
}
```

{% endtab %}
{% endtabs %}

To reset all local state saved by the Password Manager, such as secret codes that are stored on the user's device, use the `reset` method. Note that if the user has not backed up their secret code, they will be unable to subsequently log into the Password Manager and their vaults will be inaccessible.

{% tabs %}
{% tab title="TypeScript" %}

```typescript
client.reset()
/* Begins an asynchronous best-effort attempt to clear local data. */
```

{% endtab %}

{% tab title="Swift" %}

```swift
var client: PasswordManagerClient!

client.reset()
```

{% endtab %}

{% tab title=" Kotlin" %}

```kotlin
// val client: SudoPasswordManagerClient

launch {
    try {
        withContext(Dispatchers.IO) {
             client.reset()
        }
    } catch (e: SudoPasswordManagerException) {
        // Handle/notify user of exception
    }
}
```

{% endtab %}
{% endtabs %}