Package Summary Overview Summary

class:DESedeKeySpec [NONE]

All Implemented Interfaces:

KeySpec
```
public class DESedeKeySpec
extends Object
implements KeySpec
```
This class specifies a DES-EDE ("triple-DES") key.

Since:

1.4

field:DES_EDE_KEY_LEN [NONE]

DES_EDE_KEY_LEN
```
public static final int DES_EDE_KEY_LEN
```
The constant which defines the length of a DESede key in bytes.

See Also:

Constant Field Values

constructor:DESedeKeySpec(byte[]) [NONE]

DESedeKeySpec
```
public DESedeKeySpec(byte[] key)
              throws InvalidKeyException
```
Creates a DESedeKeySpec object using the first 24 bytes in key as the key material for the DES-EDE key.
The bytes that constitute the DES-EDE key are those between key[0] and key[23] inclusive

Parameters:

key - the buffer with the DES-EDE key material. The first 24 bytes of the buffer are copied to protect against subsequent modification.

Throws:

NullPointerException - if key is null.

InvalidKeyException - if the given key material is shorter than 24 bytes.

constructor:DESedeKeySpec(byte[], int) [NONE]

DESedeKeySpec
```
public DESedeKeySpec(byte[] key,
                     int offset)
              throws InvalidKeyException
```
Creates a DESedeKeySpec object using the first 24 bytes in key, beginning at offset inclusive, as the key material for the DES-EDE key.
The bytes that constitute the DES-EDE key are those between key[offset] and key[offset+23] inclusive.

Parameters:

key - the buffer with the DES-EDE key material. The first 24 bytes of the buffer beginning at offset inclusive are copied to protect against subsequent modification.

offset - the offset in key, where the DES-EDE key material starts.

Throws:

NullPointerException - if key is null.

InvalidKeyException - if the given key material, starting at offset inclusive, is shorter than 24 bytes

method:getKey() [NONE]

getKey
```
public byte[] getKey()
```
Returns the DES-EDE key.

Returns:

the DES-EDE key. Returns a new array each time this method is called.

method:isParityAdjusted(byte[], int) [NONE]

isParityAdjusted
```
public static boolean isParityAdjusted(byte[] key,
                                       int offset)
                                throws InvalidKeyException
```
Checks if the given DES-EDE key, starting at offset inclusive, is parity-adjusted.

Parameters:

key - a byte array which holds the key value

offset - the offset into the byte array

Returns:

true if the given DES-EDE key is parity-adjusted, false otherwise

Throws:

NullPointerException - if key is null.

InvalidKeyException - if the given key material, starting at offset inclusive, is shorter than 24 bytes