ERSData (Bouncy Castle Library 1.86 API Specification)

All Known Implementing Classes:

ERSByteData, ERSCachingData, ERSDataGroup, ERSDirectoryDataGroup, ERSFileData, ERSInputStreamData
```
public interface ERSData
```
General interface for a data object covered by an RFC 4998 Evidence Record - anything (a byte array, file, stream, or ERSDataGroup) that can produce the hash used as a leaf in the archive time-stamp's hash tree.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`byte[]`	`getHash(DigestCalculator digestCalculator, byte[] previousChainHash)`	Return the calculated hash for the Data

- Method Detail
  - getHash
```
byte[] getHash(DigestCalculator digestCalculator,
               byte[] previousChainHash)
```
    Return the calculated hash for the Data
    
    Parameters:
    
    digestCalculator - digest calculator to use.
    
    previousChainHash - hash from an earlier chain if it needs to be included.
    
    Returns:
    
    calculated hash.