javax.crypto.spec
Class DESedeKeySpec
java.lang.Object
|
+--javax.crypto.spec.DESedeKeySpec
- public class DESedeKeySpec
- extends Object
- implements KeySpec
This class specifies a DES-EDE ("triple-DES") key.
- See Also:
Key
,
KeyFactory
,
KeySpec
Constructor Summary |
DESedeKeySpec(byte[] key)
Uses the first 24 bytes in key as the DES-EDE key |
DESedeKeySpec(byte[] key,
int offset)
Uses the first 24 bytes in key, beginning at offset, as the DES-EDE key |
Method Summary |
byte[] |
getKey()
Returns the DES-EDE key. |
static boolean |
isParityAdjusted(byte[] key,
int offset)
Checks if the given DES-EDE key, starting at offset, is parity-adjusted. |
Methods inherited from class java.lang.Object |
clone,
equals,
finalize,
getClass,
hashCode,
notify,
notifyAll,
toString,
wait,
wait,
wait |
DES_EDE_KEY_LEN
public static final int DES_EDE_KEY_LEN
DESedeKeySpec
public DESedeKeySpec(byte[] key)
throws InvalidKeyException
- Uses the first 24 bytes in key as the DES-EDE key
- Parameters:
key
- the buffer with the DES-EDE key- Throws:
- InvalidKeyException - if the given key
material is shorter than 24 bytes
DESedeKeySpec
public DESedeKeySpec(byte[] key,
int offset)
throws InvalidKeyException
- Uses the first 24 bytes in key, beginning at offset, as the DES-EDE key
- Parameters:
key
- the buffer with the DES-EDE keyoffset
- the offset in key, where the DES-EDE key starts- Throws:
- InvalidKeyException - if the given key
material, starting at offset, is shorter than 24 bytes
getKey
public byte[] getKey()
- Returns the DES-EDE key.
- Returns:
- the DES-EDE key
isParityAdjusted
public static boolean isParityAdjusted(byte[] key,
int offset)
throws InvalidKeyException
- Checks if the given DES-EDE key, starting at offset, is parity-adjusted.
- Returns:
- true if the given DES-EDE key is parity-adjusted, false
otherwise
- Throws:
- InvalidKeyException - if the given key
material, starting at offset, is shorter than 24 bytes