TruncatingDigestCalculator (Bouncy Castle Library 1.60 API Specification)

java.lang.Object
- org.bouncycastle.cert.dane.TruncatingDigestCalculator

All Implemented Interfaces:

DigestCalculator
```
public class TruncatingDigestCalculator
extends java.lang.Object
implements DigestCalculator
```
A calculator which produces a truncated digest from a regular one, with the truncation achieved by dropping off the right most octets.

Constructor Summary

Constructors
Constructor	Description
`TruncatingDigestCalculator(DigestCalculator baseCalculator)`	Default constructor - truncate to 28.
`TruncatingDigestCalculator(DigestCalculator baseCalculator, int length)`	Constructor specifying a length.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`org.bouncycastle.asn1.x509.AlgorithmIdentifier`	`getAlgorithmIdentifier()`	Return the algorithm identifier representing the digest implemented by this calculator.
`byte[]`	`getDigest()`	Return the digest calculated on what has been written to the calculator's output stream.
`java.io.OutputStream`	`getOutputStream()`	Returns a stream that will accept data for the purpose of calculating a digest.

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

- Constructor Detail
  - TruncatingDigestCalculator
```
public TruncatingDigestCalculator(DigestCalculator baseCalculator)
```
    Default constructor - truncate to 28.
    
    Parameters:
    
    baseCalculator - actual calculator for working out the digest.
  - TruncatingDigestCalculator
```
public TruncatingDigestCalculator(DigestCalculator baseCalculator,
                                  int length)
```
    Constructor specifying a length.
    
    Parameters:
    
    baseCalculator - actual calculator for working out the digest.
    
    length - length in bytes of the final result.
- Method Detail
  - getAlgorithmIdentifier
```
public org.bouncycastle.asn1.x509.AlgorithmIdentifier getAlgorithmIdentifier()
```
    Description copied from interface: DigestCalculator
    
    Return the algorithm identifier representing the digest implemented by this calculator.
    
    Specified by:
    
    getAlgorithmIdentifier in interface DigestCalculator
    
    Returns:
    
    algorithm id and parameters.
  - getOutputStream
```
public java.io.OutputStream getOutputStream()
```
    Description copied from interface: DigestCalculator
    
    Returns a stream that will accept data for the purpose of calculating a digest. Use org.bouncycastle.util.io.TeeOutputStream if you want to accumulate the data on the fly as well.
    
    Specified by:
    
    getOutputStream in interface DigestCalculator
    
    Returns:
    
    an OutputStream
  - getDigest
```
public byte[] getDigest()
```
    Description copied from interface: DigestCalculator
    
    Return the digest calculated on what has been written to the calculator's output stream.
    
    Specified by:
    
    getDigest in interface DigestCalculator
    
    Returns:
    
    a digest.

Class TruncatingDigestCalculator

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

TruncatingDigestCalculator

TruncatingDigestCalculator

Method Detail

getAlgorithmIdentifier

getOutputStream

getDigest