java.lang.Object
- net.sourceforge.jtds.util.GeneralDigest
- - net.sourceforge.jtds.util.MD5Digest

```
public class MD5Digest
extends GeneralDigest
```
implementation of MD5 as outlined in "Handbook of Applied Cryptography", pages 346 - 347.

Field Summary

Fields
Modifier and Type	Field	Description
`private static int`	`DIGEST_LENGTH`
`private int`	`H1`
`private int`	`H2`
`private int`	`H3`
`private int`	`H4`
`private static int`	`S11`
`private static int`	`S12`
`private static int`	`S13`
`private static int`	`S14`
`private static int`	`S21`
`private static int`	`S22`
`private static int`	`S23`
`private static int`	`S24`
`private static int`	`S31`
`private static int`	`S32`
`private static int`	`S33`
`private static int`	`S34`
`private static int`	`S41`
`private static int`	`S42`
`private static int`	`S43`
`private static int`	`S44`
`private int[]`	`X`
`private int`	`xOff`

Constructor Summary

Constructors
Constructor Description

MD5Digest()
Standard constructor

MD5Digest(MD5Digest t)
Copy constructor.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`int`	`doFinal(byte[] out, int outOff)`
`private int`	`F(int u, int v, int w)`
`private int`	`G(int u, int v, int w)`
`java.lang.String`	`getAlgorithmName()`
`int`	`getDigestSize()`
`private int`	`H(int u, int v, int w)`
`private int`	`K(int u, int v, int w)`
`protected void`	`processBlock()`
`protected void`	`processLength(long bitLength)`
`protected void`	`processWord(byte[] in, int inOff)`
`void`	`reset()`	reset the chaining variables to the IV values.
`private int`	`rotateLeft(int x, int n)`
`private void`	`unpackWord(int word, byte[] out, int outOff)`

Methods inherited from class net.sourceforge.jtds.util.GeneralDigest
finish, update, update

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

Field Detail

DIGEST_LENGTH
```
private static final int DIGEST_LENGTH
```
See Also:

Constant Field Values

H1
```
private int H1
```

H2
```
private int H2
```

H3
```
private int H3
```

H4
```
private int H4
```

X
```
private int[] X
```

xOff
```
private int xOff
```

S11
```
private static final int S11
```
See Also:

Constant Field Values

S12
```
private static final int S12
```
See Also:

Constant Field Values

S13
```
private static final int S13
```
See Also:

Constant Field Values

S14
```
private static final int S14
```
See Also:

Constant Field Values

S21
```
private static final int S21
```
See Also:

Constant Field Values

S22
```
private static final int S22
```
See Also:

Constant Field Values

S23
```
private static final int S23
```
See Also:

Constant Field Values

S24
```
private static final int S24
```
See Also:

Constant Field Values

S31
```
private static final int S31
```
See Also:

Constant Field Values

S32
```
private static final int S32
```
See Also:

Constant Field Values

S33
```
private static final int S33
```
See Also:

Constant Field Values

S34
```
private static final int S34
```
See Also:

Constant Field Values

S41
```
private static final int S41
```
See Also:

Constant Field Values

S42
```
private static final int S42
```
See Also:

Constant Field Values

S43
```
private static final int S43
```
See Also:

Constant Field Values

S44
```
private static final int S44
```
See Also:

Constant Field Values

Constructor Detail
- MD5Digest
```
public MD5Digest()
```
  Standard constructor
- MD5Digest
```
public MD5Digest(MD5Digest t)
```
  Copy constructor. This will copy the state of the provided message digest.

Method Detail

getAlgorithmName

public java.lang.String getAlgorithmName()

getDigestSize
```
public int getDigestSize()
```

processWord

protected void processWord(byte[] in,
                           int inOff)

Specified by:: processWord in class GeneralDigest

processLength
```
protected void processLength(long bitLength)
```
Specified by:

processLength in class GeneralDigest

unpackWord

private void unpackWord(int word,
                        byte[] out,
                        int outOff)

doFinal

public int doFinal(byte[] out,
                   int outOff)

reset
```
public void reset()
```
reset the chaining variables to the IV values.

Overrides:

reset in class GeneralDigest

rotateLeft

private int rotateLeft(int x,
                       int n)

F

private int F(int u,
              int v,
              int w)

G

private int G(int u,
              int v,
              int w)

H

private int H(int u,
              int v,
              int w)

K

private int K(int u,
              int v,
              int w)

processBlock
```
protected void processBlock()
```
Specified by:

processBlock in class GeneralDigest

Constructor	Description
`MD5Digest()`	Standard constructor
`MD5Digest(MD5Digest t)`	Copy constructor.

Class MD5Digest

Field Summary

Constructor Summary

Method Summary

Methods inherited from class net.sourceforge.jtds.util.GeneralDigest

Methods inherited from class java.lang.Object

Field Detail

DIGEST_LENGTH

H1

H2

H3

H4

X

xOff

S11

S12

S13

S14

S21

S22

S23

S24

S31

S32

S33

S34

S41

S42

S43

S44

Constructor Detail

MD5Digest

MD5Digest

Method Detail

getAlgorithmName

getDigestSize

processWord

processLength

unpackWord

doFinal

reset

rotateLeft

F

G

H

K

processBlock