LongDigest (Javadocs [I2P+ 2.13.0+]

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

All Implemented Interfaces:
Digest, EncodableDigest, ExtendedDigest, Memoable
Direct Known Subclasses:
SHA512Digest
```
public abstract class LongDigest
extends Object
implements ExtendedDigest, Memoable, EncodableDigest
```
Base class for SHA-384 and SHA-512.

Field Summary

Fields
Modifier and Type	Field and Description
`protected long`	`H1` Hash working variables H1-H8.
`protected long`	`H2` Hash working variables H1-H8.
`protected long`	`H3` Hash working variables H1-H8.
`protected long`	`H4` Hash working variables H1-H8.
`protected long`	`H5` Hash working variables H1-H8.
`protected long`	`H6` Hash working variables H1-H8.
`protected long`	`H7` Hash working variables H1-H8.
`protected long`	`H8` Hash working variables H1-H8.
`(package private) static long[]`	`K` SHA-384 and SHA-512 constants (first 64 bits of fractional parts of cube roots of first 64 primes)
`protected CryptoServicePurpose`	`purpose` Crypto operation purpose.

Constructor Summary

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

Method Summary

All Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method and Description
`protected void`	`copyIn(LongDigest t)` copyIn.
`protected abstract CryptoServiceProperties`	`cryptoServiceProperties()` Returns the properties for the crypto service.
`void`	`finish()` finish.
`int`	`getByteLength()` getByteLength.
`protected int`	`getEncodedStateSize()` Returns the size of the encoded state.
`protected void`	`populateState(byte[] state)` populateState.
`protected void`	`processBlock()` processBlock.
`protected void`	`processLength(long lowW, long hiW)` Process the bit length data.
`protected void`	`processWord(byte[] in, int inOff)` Process a word of input data.
`void`	`reset()` reset.
`protected void`	`restoreState(byte[] encodedState)` restoreState.
`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.util.Memoable
copy, reset

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

- Field Detail
  - H1
```
protected long H1
```
    Hash working variables H1-H8.
  - H2
```
protected long H2
```
    Hash working variables H1-H8.
  - H3
```
protected long H3
```
    Hash working variables H1-H8.
  - H4
```
protected long H4
```
    Hash working variables H1-H8.
  - H5
```
protected long H5
```
    Hash working variables H1-H8.
  - H6
```
protected long H6
```
    Hash working variables H1-H8.
  - H7
```
protected long H7
```
    Hash working variables H1-H8.
  - H8
```
protected long H8
```
    Hash working variables H1-H8.
  - K
```
static final long[] K
```
    SHA-384 and SHA-512 constants (first 64 bits of fractional parts of cube roots of first 64 primes)
  - purpose
```
protected final CryptoServicePurpose purpose
```
    Crypto operation purpose.
- Constructor Detail
  - LongDigest
```
protected LongDigest()
```
    Constructor for variable length word
  - LongDigest
```
protected LongDigest(CryptoServicePurpose purpose)
```
    Constructor for variable length word
    Parameters:
    purpose - the crypto service purpose
  - 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.
    Parameters:
    t - the digest to copy
- Method Detail
  - copyIn
```
protected void copyIn(LongDigest t)
```
    copyIn.
    Parameters:
    t - the digest to copy state from
  - cryptoServiceProperties
```
protected abstract CryptoServiceProperties cryptoServiceProperties()
```
    Returns the properties for the crypto service.
    Returns:
    the crypto service properties
  - finish
```
public void finish()
```
    finish.
  - getByteLength
```
public int getByteLength()
```
    getByteLength.
    Specified by:
    getByteLength in interface ExtendedDigest
    Returns:
    byte length of the digests internal buffer.
  - getEncodedStateSize
```
protected int getEncodedStateSize()
```
    Returns the size of the encoded state.
    Returns:
    the encoded state size in bytes
  - populateState
```
protected void populateState(byte[] state)
```
    populateState.
    Parameters:
    state - the encoded state to populate from
  - processBlock
```
protected void processBlock()
```
    processBlock.
  - processLength
```
protected void processLength(long lowW,
                             long hiW)
```
    Process the bit length data.
    Parameters:
    lowW - low word of the bit length
    hiW - high word of the bit length
  - processWord
```
protected void processWord(byte[] in,
                           int inOff)
```
    Process a word of input data.
    Parameters:
    in - the input bytes
    inOff - the offset into the input array
  - reset
```
public void reset()
```
    reset.
    Specified by:
    reset in interface Digest
  - restoreState
```
protected void restoreState(byte[] encodedState)
```
    restoreState.
    Parameters:
    encodedState - the encoded state to restore from
  - 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
  - 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 input bytes
    inOff - the offset into the byte array where the data starts.
    len - the length of the data.

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.util.Memoable

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

Field Detail

H1

H2

H3

H4

H5

H6

H7

H8

K

purpose

Constructor Detail

LongDigest

LongDigest

LongDigest

Method Detail

copyIn

cryptoServiceProperties

finish

getByteLength

getEncodedStateSize

populateState

processBlock

processLength

processWord

reset

restoreState

update

update