javax.crypto.spec
Class IvParameterSpec
java.lang.Object
|
+--javax.crypto.spec.IvParameterSpec
- public class IvParameterSpec
- extends Object
- implements AlgorithmParameterSpec
This class specifies an initialization vector (IV). IVs are used
by ciphers in feedback mode, e.g., DES in CBC mode.
Constructor Summary |
IvParameterSpec(byte[] iv)
Uses the bytes in iv as the IV. |
IvParameterSpec(byte[] iv,
int offset,
int len)
Uses the first len bytes in iv ,
beginning at offset inclusive, as the IV. |
Method Summary |
byte[] |
getIV()
Returns the initialization vector (IV). |
Methods inherited from class java.lang.Object |
clone,
equals,
finalize,
getClass,
hashCode,
notify,
notifyAll,
toString,
wait,
wait,
wait |
IvParameterSpec
public IvParameterSpec(byte[] iv)
- Uses the bytes in
iv
as the IV.
- Parameters:
iv
- the buffer with the IV
IvParameterSpec
public IvParameterSpec(byte[] iv,
int offset,
int len)
- Uses the first
len
bytes in iv
,
beginning at offset
inclusive, as the IV.
The bytes that constitute the IV are those between
iv[offset]
and iv[offset+len-1]
inclusive.
- Parameters:
iv
- the buffer with the IVoffset
- the offset in iv
where the IV
startslen
- the number of IV bytes
getIV
public byte[] getIV()
- Returns the initialization vector (IV).
- Returns:
- the initialization vector (IV)