DESParameters (Bouncy Castle Library 1.68 API Specification)

java.lang.Object
- org.bouncycastle.crypto.params.KeyParameter
- - org.bouncycastle.crypto.params.DESParameters

All Implemented Interfaces:

CipherParameters

Direct Known Subclasses:

DESedeParameters
```
public class DESParameters
extends KeyParameter
```

Field Summary

Fields
Modifier and Type Field Description

static int DES_KEY_LENGTH

Constructor Summary

Constructors
Constructor Description

DESParameters(byte[] key)

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`static boolean`	`isWeakKey(byte[] key, int offset)`	DES has 16 weak keys.
`static void`	`setOddParity(byte[] bytes)`	DES Keys use the LSB as the odd parity bit.

Methods inherited from class org.bouncycastle.crypto.params.KeyParameter
getKey

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

- Field Detail
  - DES_KEY_LENGTH
```
public static final int DES_KEY_LENGTH
```
    See Also:
    
    Constant Field Values
- Constructor Detail
  - DESParameters
```
public DESParameters(byte[] key)
```
- Method Detail
  - isWeakKey
```
public static boolean isWeakKey(byte[] key,
                                int offset)
```
    DES has 16 weak keys. This method will check if the given DES key material is weak or semi-weak. Key material that is too short is regarded as weak.
    See "Applied Cryptography" by Bruce Schneier for more information.
    
    Returns:
    
    true if the given DES key material is weak or semi-weak, false otherwise.
  - setOddParity
```
public static void setOddParity(byte[] bytes)
```
    DES Keys use the LSB as the odd parity bit. This can be used to check for corrupt keys.
    
    Parameters:
    
    bytes - the byte array to set the parity on.