UnixCrypt

java.lang.Object
- org.apache.directory.api.util.UnixCrypt

```
public class UnixCrypt
extends java.lang.Object
```
Unix Crypt. Implements the one way cryptography used by Unix systems for simple password protection.

Field Summary

Fields
Modifier and Type	Field and Description
`private static byte[]`	`A64TOI`
`private static long[][]`	`CF6464`
`private static byte[]`	`CIFP`
`private static byte[]`	`ExpandTr`
`private static long[][]`	`IE3264`
`private static byte[]`	`IP`
`private static byte[]`	`ITOA64`
`private static byte[]`	`P32Tr`
`private static byte[]`	`PC1`
`private static long[][]`	`PC1ROT`
`private static byte[]`	`PC2`
`private static long[][][]`	`PC2ROT`
`private static byte[]`	`Rotates`
`private static byte[][]`	`S`
`private static long[][]`	`SPE`

Constructor Summary

Constructors
Modifier Constructor and Description

private UnixCrypt()
You can't call the constructer.

Constructors
Modifier	Constructor and Description
`private`	`UnixCrypt()` You can't call the constructer.

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method and Description
`static java.lang.String`	`crypt(java.lang.String key, java.lang.String setting)` Encrypts String into crypt (Unix) code.
`private static long`	`des_cipher(long in, int salt, int num_iter, long[] KS)` Returns the DES encrypted code of the given word with the specified environment.
`private static long[]`	`des_setkey(long keyword)` Returns the key schedule for the given key.
`private static void`	`init_perm(long[][] perm, byte[] p, int chars_out)` Initializes the given permutation table with the mapping table.
`static void`	`main(java.lang.String[] arg)`
`private static long`	`perm3264(int c, long[][] p)` Returns the permutation of the given 32-bit code with the specified permutataion table.
`private static long`	`perm6464(long c, long[][] p)` Returns the permutation of the given 64-bit code with the specified permutataion table.
`private static int`	`to_six_bit(int num)` Returns the transposed and split code of a 24-bit code into a 4-byte code, each having 6 bits.
`private static long`	`to_six_bit(long num)` Returns the transposed and split code of two 24-bit code into two 4-byte code, each having 6 bits.

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

Field Detail

IP
```
private static final byte[] IP
```

ExpandTr
```
private static final byte[] ExpandTr
```

PC1
```
private static final byte[] PC1
```

Rotates
```
private static final byte[] Rotates
```

PC2
```
private static final byte[] PC2
```

S
```
private static final byte[][] S
```

P32Tr
```
private static final byte[] P32Tr
```

CIFP
```
private static final byte[] CIFP
```

ITOA64
```
private static final byte[] ITOA64
```

A64TOI
```
private static byte[] A64TOI
```

PC1ROT
```
private static long[][] PC1ROT
```

PC2ROT
```
private static long[][][] PC2ROT
```

IE3264
```
private static long[][] IE3264
```

SPE
```
private static long[][] SPE
```

CF6464
```
private static long[][] CF6464
```

Constructor Detail
- UnixCrypt
```
private UnixCrypt()
```
  You can't call the constructer.

Method Detail
- to_six_bit
```
private static int to_six_bit(int num)
```
  Returns the transposed and split code of a 24-bit code into a 4-byte code, each having 6 bits.
- to_six_bit
```
private static long to_six_bit(long num)
```
  Returns the transposed and split code of two 24-bit code into two 4-byte code, each having 6 bits.
- perm6464
```
private static long perm6464(long c,
                             long[][] p)
```
  Returns the permutation of the given 64-bit code with the specified permutataion table.
- perm3264
```
private static long perm3264(int c,
                             long[][] p)
```
  Returns the permutation of the given 32-bit code with the specified permutataion table.
- des_setkey
```
private static long[] des_setkey(long keyword)
```
  Returns the key schedule for the given key.
- des_cipher
```
private static long des_cipher(long in,
                               int salt,
                               int num_iter,
                               long[] KS)
```
  Returns the DES encrypted code of the given word with the specified environment.
- init_perm
```
private static void init_perm(long[][] perm,
                              byte[] p,
                              int chars_out)
```
  Initializes the given permutation table with the mapping table.
- crypt
```
public static java.lang.String crypt(java.lang.String key,
                                     java.lang.String setting)
```
  Encrypts String into crypt (Unix) code.
  
  Parameters:
  
  key - the key to be encrypted
  
  setting - the salt to be used
  
  Returns:
  
  the encrypted String
- main
```
public static void main(java.lang.String[] arg)
```

Class UnixCrypt

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

IP

ExpandTr

PC1

Rotates

PC2

S

P32Tr

CIFP

ITOA64

A64TOI

PC1ROT

PC2ROT

IE3264

SPE

CF6464

Constructor Detail

UnixCrypt

Method Detail

to_six_bit

to_six_bit

perm6464

perm3264

des_setkey

des_cipher

init_perm

crypt

main