java.lang.Object
- org.bouncycastle.crypto.digests.LongDigest

All Implemented Interfaces:

Digest, EncodableDigest, ExtendedDigest, Memoable

Direct Known Subclasses:

SHA384Digest, SHA512Digest, SHA512tDigest
```
public abstract class LongDigest
extends java.lang.Object
implements ExtendedDigest, Memoable, EncodableDigest
```
Base class for SHA-384 and SHA-512.

Field Summary

Fields
Modifier and Type	Field	Description
`protected long`	`H1`
`protected long`	`H2`
`protected long`	`H3`
`protected long`	`H4`
`protected long`	`H5`
`protected long`	`H6`
`protected long`	`H7`
`protected long`	`H8`

Constructor Summary

Constructors
Modifier Constructor Description

protected LongDigest()
Constructor for variable length word

protected LongDigest(LongDigest t)
Copy constructor.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`protected void`	`copyIn(LongDigest t)`
`void`	`finish()`
`int`	`getByteLength()`	Return the size in bytes of the internal buffer the digest applies it's compression function to.
`protected int`	`getEncodedStateSize()`
`protected void`	`populateState(byte[] state)`
`protected void`	`processBlock()`
`protected void`	`processLength(long lowW, long hiW)`
`protected void`	`processWord(byte[] in, int inOff)`
`void`	`reset()`	reset the digest back to it's initial state.
`protected void`	`restoreState(byte[] encodedState)`
`void`	`update(byte in)`	update the message digest with a single byte.
`void`	`update(byte[] in, int inOff, int len)`	update the message digest with a block of bytes.

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

Methods inherited from interface org.bouncycastle.crypto.Digest
doFinal, getAlgorithmName, getDigestSize

Methods inherited from interface org.bouncycastle.crypto.digests.EncodableDigest
getEncodedState

Methods inherited from interface org.bouncycastle.util.Memoable
copy, reset

- Field Detail
  - H1
```
protected long H1
```
  - H2
```
protected long H2
```
  - H3
```
protected long H3
```
  - H4
```
protected long H4
```
  - H5
```
protected long H5
```
  - H6
```
protected long H6
```
  - H7
```
protected long H7
```
  - H8
```
protected long H8
```
- Constructor Detail
  - LongDigest
```
protected LongDigest()
```
    Constructor for variable length word
  - LongDigest
```
protected LongDigest(LongDigest t)
```
    Copy constructor. We are using copy constructors in place of the Object.clone() interface as this interface is not supported by J2ME.
- Method Detail
  - copyIn
```
protected void copyIn(LongDigest t)
```
  - populateState
```
protected void populateState(byte[] state)
```
  - restoreState
```
protected void restoreState(byte[] encodedState)
```
  - getEncodedStateSize
```
protected int getEncodedStateSize()
```
  - update
```
public void update(byte in)
```
    Description copied from interface: Digest
    
    update the message digest with a single byte.
    
    Specified by:
    
    update in interface Digest
    
    Parameters:
    
    in - the input byte to be entered.
  - update
```
public void update(byte[] in,
                   int inOff,
                   int len)
```
    Description copied from interface: Digest
    
    update the message digest with a block of bytes.
    
    Specified by:
    
    update in interface Digest
    
    Parameters:
    
    in - the byte array containing the data.
    
    inOff - the offset into the byte array where the data starts.
    
    len - the length of the data.
  - finish
```
public void finish()
```
  - reset
```
public void reset()
```
    Description copied from interface: Digest
    
    reset the digest back to it's initial state.
    
    Specified by:
    
    reset in interface Digest
  - getByteLength
```
public int getByteLength()
```
    Description copied from interface: ExtendedDigest
    
    Return the size in bytes of the internal buffer the digest applies it's compression function to.
    
    Specified by:
    
    getByteLength in interface ExtendedDigest
    
    Returns:
    
    byte length of the digests internal buffer.
  - processWord
```
protected void processWord(byte[] in,
                           int inOff)
```
  - processLength
```
protected void processLength(long lowW,
                             long hiW)
```
  - processBlock
```
protected void processBlock()
```

Modifier	Constructor	Description
`protected`	`LongDigest()`	Constructor for variable length word
`protected`	`LongDigest(LongDigest t)`	Copy constructor.

Class LongDigest

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Methods inherited from interface org.bouncycastle.crypto.Digest

Methods inherited from interface org.bouncycastle.crypto.digests.EncodableDigest

Methods inherited from interface org.bouncycastle.util.Memoable

Field Detail

H1

H2

H3

H4

H5

H6

H7

H8

Constructor Detail

LongDigest

LongDigest

Method Detail

copyIn

populateState

restoreState

getEncodedStateSize

update

update

finish

reset

getByteLength

processWord

processLength

processBlock