com.ibm.crypto.provider
Class SealKeySpec
java.lang.Object
|
+--com.ibm.crypto.provider.SealKeySpec
- public class SealKeySpec
- extends Object
- implements KeySpec
This class specifies a Seal secret key.
Constructor Summary |
SealKeySpec(byte[] key)
Constructs a secret key from the given byte array. |
SealKeySpec(byte[] key,
int offset)
Constructs a secret key from the given byte array, using the first
len bytes of key , starting at
offset inclusive. |
Method Summary |
byte[] |
getKey()
Returns the key material of this secret key. |
Methods inherited from class java.lang.Object |
clone,
equals,
finalize,
getClass,
hashCode,
notify,
notifyAll,
toString,
wait,
wait,
wait |
SealKeySpec
public SealKeySpec(byte[] key)
throws InvalidKeyException
- Constructs a secret key from the given byte array.
- Parameters:
key
- the key material of the secret key.- Throws:
- InvalidKeyException -
SealKeySpec
public SealKeySpec(byte[] key,
int offset)
throws InvalidKeyException
- Constructs a secret key from the given byte array, using the first
len
bytes of key
, starting at
offset
inclusive.
The bytes that constitute the secret key are
those between key[offset]
and
key[offset+len-1]
inclusive.
This constructor does not check if the given bytes indeed specify a
secret key of the specified algorithm. For example, if the algorithm is
DES, this constructor does not check if key
is 8 bytes
long, and also does not check for weak or semi-weak keys.
In order for those checks to be performed, an algorithm-specific key
specification class (in this case:
DESKeySpec
)
must be used.
- Parameters:
key
- the key material of the secret key.offset
- the offset in key
where the key material
starts.len
- the length of the key material.algorithm
- the name of the secret-key algorithm to be associated
with the given key material.- Throws:
- InvalidKeyException - See Appendix A in the
Java Cryptography Extension API Specification & Reference
for information about standard algorithm names.
getKey
public byte[] getKey()
- Returns the key material of this secret key.
- Returns:
- the key material