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Bouncy Castle Cryptography 1.64 | ||||||||
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SUMMARY: INNER | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |
java.lang.Object | +--org.bouncycastle.bcpg.BCPGObject | +--org.bouncycastle.bcpg.S2K
Parameter specifier for the PGP string-to-key password based key derivation function.
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.
Field Summary | |
static int |
GNU_DUMMY_S2K
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static int |
GNU_PROTECTION_MODE_DIVERT_TO_CARD
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static int |
GNU_PROTECTION_MODE_NO_PRIVATE_KEY
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static int |
SALTED
Salted key generation. |
static int |
SALTED_AND_ITERATED
Salted and iterated key generation. |
static int |
SIMPLE
Simple key generation. |
Constructor Summary | |
S2K(int algorithm)
Constructs a specifier for a simple S2K generation. |
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S2K(int algorithm,
byte[] iv)
Constructs a specifier for a salted S2K generation. |
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S2K(int algorithm,
byte[] iv,
int itCount)
Constructs a specifier for a salted and iterated S2K generation. |
Method Summary | |
void |
encode(BCPGOutputStream out)
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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. |
Methods inherited from class org.bouncycastle.bcpg.BCPGObject |
getEncoded |
Methods inherited from class java.lang.Object |
clone,
equals,
finalize,
getClass,
hashCode,
notify,
notifyAll,
toString,
wait,
wait,
wait |
Field Detail |
public 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
Constructor Detail |
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.Method Detail |
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
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Bouncy Castle Cryptography 1.64 | ||||||||
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