org.bouncycastle.crypto.generators
Class PKCS5S2ParametersGenerator
java.lang.Object
org.bouncycastle.crypto.PBEParametersGenerator
org.bouncycastle.crypto.generators.PKCS5S2ParametersGenerator
public class PKCS5S2ParametersGenerator
- extends PBEParametersGenerator
Generator for PBE derived keys and ivs as defined by PKCS 5 V2.0 Scheme 2.
This generator uses a SHA-1 HMac as the calculation function.
The document this implementation is based on can be found at
RSA's PKCS5 Page
Method Summary |
private void |
F(byte[] P,
byte[] S,
int c,
byte[] iBuf,
byte[] out,
int outOff)
|
private byte[] |
generateDerivedKey(int dkLen)
|
CipherParameters |
generateDerivedMacParameters(int keySize)
Generate a key parameter for use with a MAC derived from the password,
salt, and iteration count we are currently initialised with. |
CipherParameters |
generateDerivedParameters(int keySize)
Generate a key parameter derived from the password, salt, and iteration
count we are currently initialised with. |
CipherParameters |
generateDerivedParameters(int keySize,
int ivSize)
Generate a key with initialisation vector parameter derived from
the password, salt, and iteration count we are currently initialised
with. |
private void |
intToOctet(byte[] buf,
int i)
|
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
hMac
private Mac hMac
PKCS5S2ParametersGenerator
public PKCS5S2ParametersGenerator()
- construct a PKCS5 Scheme 2 Parameters generator.
F
private void F(byte[] P,
byte[] S,
int c,
byte[] iBuf,
byte[] out,
int outOff)
intToOctet
private void intToOctet(byte[] buf,
int i)
generateDerivedKey
private byte[] generateDerivedKey(int dkLen)
generateDerivedParameters
public CipherParameters generateDerivedParameters(int keySize)
- Generate a key parameter derived from the password, salt, and iteration
count we are currently initialised with.
- Specified by:
generateDerivedParameters
in class PBEParametersGenerator
- Parameters:
keySize
- the size of the key we want (in bits)
- Returns:
- a KeyParameter object.
generateDerivedParameters
public CipherParameters generateDerivedParameters(int keySize,
int ivSize)
- Generate a key with initialisation vector parameter derived from
the password, salt, and iteration count we are currently initialised
with.
- Specified by:
generateDerivedParameters
in class PBEParametersGenerator
- Parameters:
keySize
- the size of the key we want (in bits)ivSize
- the size of the iv we want (in bits)
- Returns:
- a ParametersWithIV object.
generateDerivedMacParameters
public CipherParameters generateDerivedMacParameters(int keySize)
- Generate a key parameter for use with a MAC derived from the password,
salt, and iteration count we are currently initialised with.
- Specified by:
generateDerivedMacParameters
in class PBEParametersGenerator
- Parameters:
keySize
- the size of the key we want (in bits)
- Returns:
- a KeyParameter object.