KEMKDFSpec (Bouncy Castle Library 1.86 API Specification)

java.lang.Object
- org.bouncycastle.jcajce.spec.KEMKDFSpec

Direct Known Subclasses:

KEMExtractSpec, KEMGenerateSpec, KTSParameterSpec
```
public class KEMKDFSpec
extends java.lang.Object
```

Constructor Summary

Constructors
Modifier	Constructor	Description
`protected`	`KEMKDFSpec(AlgorithmIdentifier kdfAlgorithm, byte[] otherInfo, java.lang.String keyAlgorithmName, int keySizeInBits)`	Base constructor.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`AlgorithmIdentifier`	`getKdfAlgorithm()`
`java.lang.String`	`getKeyAlgorithmName()`
`int`	`getKeySize()`
`byte[]`	`getOtherInfo()`

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

- Constructor Detail
  - KEMKDFSpec
```
protected KEMKDFSpec(AlgorithmIdentifier kdfAlgorithm,
                     byte[] otherInfo,
                     java.lang.String keyAlgorithmName,
                     int keySizeInBits)
```
    Base constructor.
    A null otherInfo is stored as empty, so getOtherInfo() never returns null. The Builder of every spec in this package already does that, but this constructor is reachable directly by a subclass - the deprecated KEMParameterSpec is one - and org.bouncycastle.jcajce.provider.asymmetric.util.KdfUtil's KMAC and SHAKE-256 branches read the otherInfo length without a guard, so a null here would surface as a NullPointerException out of a KEM operation.
    
    Parameters:
    
    kdfAlgorithm - the KDF to derive with, or null for the shared secret as it comes.
    
    otherInfo - the otherInfo/IV to feed the KDF, may be null for none.
    
    keyAlgorithmName - the algorithm name for the derived key.
    
    keySizeInBits - the size of the key to derive.
- Method Detail
  - getKeyAlgorithmName
```
public java.lang.String getKeyAlgorithmName()
```
  - getKeySize
```
public int getKeySize()
```
  - getKdfAlgorithm
```
public AlgorithmIdentifier getKdfAlgorithm()
```
  - getOtherInfo
```
public byte[] getOtherInfo()
```