Added in [API level 37](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels) Summary: [Ctors](https://developer.android.com/reference/android/crypto/hpke/Sender.Builder#pubctors) \| [Methods](https://developer.android.com/reference/android/crypto/hpke/Sender.Builder#pubmethods) \| [Inherited Methods](https://developer.android.com/reference/android/crypto/hpke/Sender.Builder#inhmethods)

# Sender.Builder

*** ** * ** ***

` public static class Sender.Builder `   
` extends https://developer.android.com/reference/java/lang/Object ` ` `

|---|---|
| [java.lang.Object](https://developer.android.com/reference/java/lang/Object) ||
| ↳ | android.crypto.hpke.Sender.Builder |

<br />

*** ** * ** ***

A builder for HPKE Sender objects.

## Summary

| ### Public constructors ||
|---|---|
| ` https://developer.android.com/reference/android/crypto/hpke/Sender.Builder#Builder(android.crypto.hpke.Hpke,%20java.security.PublicKey)(https://developer.android.com/reference/android/crypto/hpke/Hpke hpke, https://developer.android.com/reference/java/security/PublicKey recipientKey) ` Creates the Builder. |

| ### Public methods ||
|---|---|
| ` https://developer.android.com/reference/android/crypto/hpke/Sender` | ` https://developer.android.com/reference/android/crypto/hpke/Sender.Builder#build()() ` Created the `https://developer.android.com/reference/android/crypto/hpke/Sender` object. |
| ` https://developer.android.com/reference/android/crypto/hpke/Sender.Builder` | ` https://developer.android.com/reference/android/crypto/hpke/Sender.Builder#setApplicationInfo(byte[])(byte[] applicationInfo) ` Adds optional application-related data which will be used during the key generation process. |
| ` https://developer.android.com/reference/android/crypto/hpke/Sender.Builder` | ` https://developer.android.com/reference/android/crypto/hpke/Sender.Builder#setPsk(byte[],%20byte[])(byte[] psk, byte[] pskId) ` Sets pre-shared key information to be used for message authentication. |
| ` https://developer.android.com/reference/android/crypto/hpke/Sender.Builder` | ` https://developer.android.com/reference/android/crypto/hpke/Sender.Builder#setSenderKey(java.security.PrivateKey)(https://developer.android.com/reference/java/security/PrivateKey senderKey) ` Sets the sender key to be used by the recipient for message authentication. |

### Inherited methods

From class ` https://developer.android.com/reference/java/lang/Object ` ` https://developer.android.com/reference/java/lang/Object` ` https://developer.android.com/reference/java/lang/Object#clone()() `

Creates and returns a copy of this object.
` boolean` ` https://developer.android.com/reference/java/lang/Object#equals(java.lang.Object)(https://developer.android.com/reference/java/lang/Object obj) `

Indicates whether some other object is "equal to" this one.
` void` ` https://developer.android.com/reference/java/lang/Object#finalize()() `

Called by the garbage collector on an object when garbage collection determines that there are no more references to the object.
` final https://developer.android.com/reference/java/lang/Class<?>` ` https://developer.android.com/reference/java/lang/Object#getClass()() `

Returns the runtime class of this `Object`.
` int` ` https://developer.android.com/reference/java/lang/Object#hashCode()() `

Returns a hash code value for the object.
` final void` ` https://developer.android.com/reference/java/lang/Object#notify()() `

Wakes up a single thread that is waiting on this object's monitor.
` final void` ` https://developer.android.com/reference/java/lang/Object#notifyAll()() `

Wakes up all threads that are waiting on this object's monitor.
` https://developer.android.com/reference/java/lang/String` ` https://developer.android.com/reference/java/lang/Object#toString()() `

Returns a string representation of the object.
` final void` ` https://developer.android.com/reference/java/lang/Object#wait(long,%20int)(long timeoutMillis, int nanos) `

Causes the current thread to wait until it is awakened, typically by being *notified* or *interrupted*, or until a certain amount of real time has elapsed.
` final void` ` https://developer.android.com/reference/java/lang/Object#wait(long)(long timeoutMillis) `

Causes the current thread to wait until it is awakened, typically by being *notified* or *interrupted*, or until a certain amount of real time has elapsed.
` final void` ` https://developer.android.com/reference/java/lang/Object#wait()() `

Causes the current thread to wait until it is awakened, typically by being *notified* or *interrupted*.

## Public constructors

### Builder

Added in [API level 37](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)

```
public Builder (Hpke hpke, 
                PublicKey recipientKey)
```

Creates the Builder.

<br />

| Parameters ||
|---|---|
| `hpke` | `Hpke`: This value cannot be `null`. <br /> |
| `recipientKey` | `PublicKey`: public key of the recipient. This value cannot be `null`. <br /> |

## Public methods

### build

Added in [API level 37](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)

```
public Sender build ()
```

Created the `https://developer.android.com/reference/android/crypto/hpke/Sender` object.

<br />

| Returns ||
|---|---|
| `https://developer.android.com/reference/android/crypto/hpke/Sender` | This value cannot be `null`. <br /> |

| Throws ||
|---|---|
| `https://developer.android.com/reference/java/lang/UnsupportedOperationException` | if this Provider does not support the expected mode |
| `https://developer.android.com/reference/java/security/InvalidKeyException` | if the sender or recipient key are unsupported |

### setApplicationInfo

Added in [API level 37](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)

```
public Sender.Builder setApplicationInfo (byte[] applicationInfo)
```

Adds optional application-related data which will be used during the key generation process.

<br />

| Parameters ||
|---|---|
| `applicationInfo` | `byte`: application-specific information. This value cannot be `null`. <br /> |

| Returns ||
|---|---|
| `https://developer.android.com/reference/android/crypto/hpke/Sender.Builder` | the Builder. This value cannot be `null`. <br /> |

### setPsk

Added in [API level 37](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)

```
public Sender.Builder setPsk (byte[] psk, 
                byte[] pskId)
```

Sets pre-shared key information to be used for message authentication.

<br />

| Parameters ||
|---|---|
| `psk` | `byte`: the pre-shared secret key. This value cannot be `null`. <br /> |
| `pskId` | `byte`: the id of the pre-shared key. This value cannot be `null`. <br /> |

| Returns ||
|---|---|
| `https://developer.android.com/reference/android/crypto/hpke/Sender.Builder` | the Builder. This value cannot be `null`. <br /> |

### setSenderKey

Added in [API level 37](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)

```
public Sender.Builder setSenderKey (PrivateKey senderKey)
```

Sets the sender key to be used by the recipient for message authentication.

<br />

| Parameters ||
|---|---|
| `senderKey` | `PrivateKey`: the sender's public key. This value cannot be `null`. <br /> |

| Returns ||
|---|---|
| `https://developer.android.com/reference/android/crypto/hpke/Sender.Builder` | the Builder. This value cannot be `null`. <br /> |