KDFFeedbackBytesGenerator (Bouncy Castle Library 1.68 API Specification)

java.lang.Object
- org.bouncycastle.crypto.generators.KDFFeedbackBytesGenerator

All Implemented Interfaces:

DerivationFunction, MacDerivationFunction
```
public class KDFFeedbackBytesGenerator
extends java.lang.Object
implements MacDerivationFunction
```
This KDF has been defined by the publicly available NIST SP 800-108 specification.

Constructor Summary

Constructors
Constructor Description

KDFFeedbackBytesGenerator(Mac prf)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`int`	`generateBytes(byte[] out, int outOff, int len)`
`Mac`	`getMac()`	return the MAC used as the basis for the function
`void`	`init(DerivationParameters params)`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - KDFFeedbackBytesGenerator
```
public KDFFeedbackBytesGenerator(Mac prf)
```
- Method Detail
  - init
```
public void init(DerivationParameters params)
```
    Specified by:
    
    init in interface DerivationFunction
  - getMac
```
public Mac getMac()
```
    Description copied from interface: MacDerivationFunction
    
    return the MAC used as the basis for the function
    
    Specified by:
    
    getMac in interface MacDerivationFunction
    
    Returns:
    
    the Mac.
  - generateBytes
```
public int generateBytes(byte[] out,
                         int outOff,
                         int len)
                  throws DataLengthException,
                         java.lang.IllegalArgumentException
```
    Specified by:
    
    generateBytes in interface DerivationFunction
    
    Throws:
    
    DataLengthException
    
    java.lang.IllegalArgumentException