HkdfMacFactory (HKDF-RFC5869 2.0.0 API)

All Known Implementing Classes:

HkdfMacFactory.Default
```
public interface HkdfMacFactory
```
Factory class for creating Mac hashers

Nested Class Summary

Nested Classes
Modifier and Type Interface Description

static class HkdfMacFactory.Default
Default implementation

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`Mac`	`createInstance(SecretKey key)`	Creates a new instance of Hmac with given key, i.e.
`SecretKey`	`createSecretKey(byte[] rawKeyMaterial)`	Creates a secret key from a byte raw key material to be used with `createInstance(SecretKey)`
`int`	`getMacLengthBytes()`	Get the length of the mac output in bytes

- Method Detail
  - createInstance
```
Mac createInstance(SecretKey key)
```
    Creates a new instance of Hmac with given key, i.e. it must already be initialized with Mac.init(Key).
    
    Parameters:
    
    key - the key used, must not be null
    
    Returns:
    
    a new mac instance
  - getMacLengthBytes
```
int getMacLengthBytes()
```
    Get the length of the mac output in bytes
    
    Returns:
    
    the length of mac output in bytes
  - createSecretKey
```
SecretKey createSecretKey(byte[] rawKeyMaterial)
```
    Creates a secret key from a byte raw key material to be used with createInstance(SecretKey)
    
    Parameters:
    
    rawKeyMaterial - the raw key
    
    Returns:
    
    wrapped as secret key instance or null if input is null or empty