javax.crypto.spec
Class DESedeKeySpec
java.lang.Object
|
+--javax.crypto.spec.DESedeKeySpec
- public class DESedeKeySpec
- extends java.lang.Object
- implements java.security.spec.KeySpec
A class that provides a specification for a DESede key.
Constructor Summary |
DESedeKeySpec(byte[] key)
Uses the first 24 bytes in key as the DESede key material. |
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 DESede key. |
static boolean |
isParityAdjusted(byte[] key,
int offset)
Checks if the given DESede 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 |
ident
public static final java.lang.String ident
DES_EDE_KEY_LEN
public static final int DES_EDE_KEY_LEN
DESedeKeySpec
public DESedeKeySpec(byte[] key)
throws java.security.InvalidKeyException
- Uses the first 24 bytes in key as the DESede key material.
- Parameters:
key
- the buffer with the DES-EDE key material- Throws:
- java.security.InvalidKeyException - if the given key material
is shorter than 24 bytes
DESedeKeySpec
public DESedeKeySpec(byte[] key,
int offset)
throws java.security.InvalidKeyException
- Uses the first 24 bytes in key, beginning at offset, as the DES-EDE
key.
- Parameters:
key
- the buffer with the DES-EDE key materialoffset
- the offset in key, where the DES-EDE key starts- Throws:
- java.security.InvalidKeyException - if the given key material, starting
at offset, is shorter than 24 bytes
getKey
public byte[] getKey()
- Returns the DESede key.
- Returns:
- the DESede key.
isParityAdjusted
public static boolean isParityAdjusted(byte[] key,
int offset)
throws java.security.InvalidKeyException
- Checks if the given DESede key, starting at offset, is
parity-adjusted.
- Returns:
- true if the given DES-EDE key is parity-adjusted,
false otherwise
- Throws:
- java.security.InvalidKeyException - if the given key material, starting
at offset, is shorter than 24 bytes