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Class javax.crypto.spec.DESKeySpec
java.lang.Object
|
+----javax.crypto.spec.DESKeySpec
- public class DESKeySpec
- extends Object
- implements KeySpec
This class specifies a DES key.
- See Also:
- Key, KeyFactory, KeySpec
-
DESKeySpec(byte[])
- Uses the first 8 bytes in
key
as the DES key
-
DESKeySpec(byte[], int)
- Uses the first 8 bytes in
key
, beginning at
offset
, as the DES key
-
getKey()
- Returns the DES key.
-
isParityAdjusted(byte[], int)
- Checks if the given DES key, starting at
offset
,
is parity-adjusted.
DESKeySpec
public DESKeySpec(byte key[]) throws InvalidKeyException
- Uses the first 8 bytes in
key
as the DES key
- Parameters:
- key - the buffer with the DES key
- Throws: InvalidKeyException
- if the given key material is shorter
than 8 bytes
DESKeySpec
public DESKeySpec(byte key[],
int offset) throws InvalidKeyException
- Uses the first 8 bytes in
key
, beginning at
offset
, as the DES key
- Parameters:
- key - the buffer with the DES key
- offset - the offset in
key
, where the DES key starts
- Throws: InvalidKeyException
- if the given key material, starting at
offset
, is shorter than 8 bytes
getKey
public byte[] getKey()
- Returns the DES key.
- Returns:
- the DES key
isParityAdjusted
public static boolean isParityAdjusted(byte key[],
int offset) throws InvalidKeyException
- Checks if the given DES key, starting at
offset
,
is parity-adjusted.
- Returns:
- true if the given DES key is parity-adjusted, false otherwise
- Throws: InvalidKeyException
- if the given key material, starting at
offset
, is shorter than 8 bytes
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