ERSCachingData (Bouncy Castle Cryptography 1.75 API Specification)

java.lang.Object
- org.bouncycastle.tsp.ers.ERSCachingData

All Implemented Interfaces:

ERSData

Direct Known Subclasses:

ERSByteData, ERSDataGroup, ERSFileData, ERSInputStreamData
```
public abstract class ERSCachingData
extends java.lang.Object
implements ERSData
```
An ERSData object that caches hash calculations.

Constructor Summary

Constructors
Constructor Description

ERSCachingData()

Method Summary

All Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method	Description
`protected abstract byte[]`	`calculateHash(org.bouncycastle.operator.DigestCalculator digestCalculator, byte[] previousChainHash)`
`byte[]`	`getHash(org.bouncycastle.operator.DigestCalculator digestCalculator, byte[] previousChainHash)`	Generates a hash for the whole DataGroup.

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

- Constructor Detail
  - ERSCachingData
```
public ERSCachingData()
```
- Method Detail
  - getHash
```
public byte[] getHash(org.bouncycastle.operator.DigestCalculator digestCalculator,
                      byte[] previousChainHash)
```
    Generates a hash for the whole DataGroup.
    
    Specified by:
    
    getHash in interface ERSData
    
    Parameters:
    
    digestCalculator - the DigestCalculator to use for computing the hash
    
    previousChainHash - hash from an earlier chain if it needs to be included.
    
    Returns:
    
    a hash that is representative of the whole DataGroup
  - calculateHash
```
protected abstract byte[] calculateHash(org.bouncycastle.operator.DigestCalculator digestCalculator,
                                        byte[] previousChainHash)
```