public class S2K extends BCPGObject
In iterated mode, S2K takes a single byte iteration count specifier, which is converted to an
actual iteration count using a formula that grows the iteration count exponentially as the byte
value increases.
e.g. 0x01 == 1088 iterations, and 0xFF == 65,011,712 iterations.
| Modifier and Type | Field and Description |
|---|---|
static int |
GNU_DUMMY_S2K |
static int |
GNU_PROTECTION_MODE_DIVERT_TO_CARD |
static int |
GNU_PROTECTION_MODE_NO_PRIVATE_KEY |
static int |
SALTED
Salted key generation.
|
static int |
SALTED_AND_ITERATED
Salted and iterated key generation.
|
static int |
SIMPLE
Simple key generation.
|
| Constructor and Description |
|---|
S2K(int algorithm)
Constructs a specifier for a
simple S2K generation. |
S2K(int algorithm,
byte[] iv)
Constructs a specifier for a
salted S2K generation. |
S2K(int algorithm,
byte[] iv,
int itCount)
Constructs a specifier for a
salted and iterated S2K generation. |
| Modifier and Type | Method and Description |
|---|---|
void |
encode(BCPGOutputStream out) |
int |
getHashAlgorithm()
Gets the
hash algorithm for this S2K. |
long |
getIterationCount()
Gets the actual (expanded) iteration count.
|
byte[] |
getIV()
Gets the iv/salt to use for the key generation.
|
int |
getProtectionMode()
Gets the protection mode - only if GNU_DUMMY_S2K
|
int |
getType()
Gets the
digest algorithm specified. |
getEncodedpublic static final int SIMPLE
public static final int SALTED
public static final int SALTED_AND_ITERATED
public static final int GNU_DUMMY_S2K
public static final int GNU_PROTECTION_MODE_NO_PRIVATE_KEY
public static final int GNU_PROTECTION_MODE_DIVERT_TO_CARD
public S2K(int algorithm)
simple S2K generation.algorithm - the digest algorithm to use.public S2K(int algorithm, byte[] iv)
salted S2K generation.algorithm - the digest algorithm to use.iv - the salt to apply to input to the key generation.public S2K(int algorithm, byte[] iv, int itCount)
salted and iterated S2K generation.algorithm - the digest algorithm to iterate.iv - the salt to apply to input to the key generation.itCount - the single byte iteration count specifier.public int getType()
digest algorithm specified.public int getHashAlgorithm()
hash algorithm for this S2K.public byte[] getIV()
public long getIterationCount()
public int getProtectionMode()
public void encode(BCPGOutputStream out) throws java.io.IOException
encode in class BCPGObjectjava.io.IOException