DSAGenParameterSpec
public
final
class
DSAGenParameterSpec
extends Object
implements
AlgorithmParameterSpec
java.lang.Object | |
↳ | java.security.spec.DSAGenParameterSpec |
This immutable class specifies the set of parameters used for generating DSA parameters as specified in FIPS 186-3 Digital Signature Standard (DSS).
See also:
Summary
Public constructors | |
---|---|
DSAGenParameterSpec(int primePLen, int subprimeQLen)
Creates a domain parameter specification for DSA parameter
generation using |
|
DSAGenParameterSpec(int primePLen, int subprimeQLen, int seedLen)
Creates a domain parameter specification for DSA parameter
generation using |
Public methods | |
---|---|
int
|
getPrimePLength()
Returns the desired length of the prime P of the to-be-generated DSA domain parameters in bits. |
int
|
getSeedLength()
Returns the desired length of the domain parameter seed in bits. |
int
|
getSubprimeQLength()
Returns the desired length of the sub-prime Q of the to-be-generated DSA domain parameters in bits. |
Inherited methods | |
---|---|
Public constructors
DSAGenParameterSpec
public DSAGenParameterSpec (int primePLen, int subprimeQLen)
Creates a domain parameter specification for DSA parameter
generation using primePLen
and subprimeQLen
.
The value of subprimeQLen
is also used as the default
length of the domain parameter seed in bits.
Parameters | |
---|---|
primePLen |
int : the desired length of the prime P in bits. |
subprimeQLen |
int : the desired length of the sub-prime Q in bits. |
Throws | |
---|---|
IllegalArgumentException |
if primePLen
or subprimeQLen is illegal per the specification of
FIPS 186-3. |
DSAGenParameterSpec
public DSAGenParameterSpec (int primePLen, int subprimeQLen, int seedLen)
Creates a domain parameter specification for DSA parameter
generation using primePLen
, subprimeQLen
,
and seedLen
.
Parameters | |
---|---|
primePLen |
int : the desired length of the prime P in bits. |
subprimeQLen |
int : the desired length of the sub-prime Q in bits. |
seedLen |
int : the desired length of the domain parameter seed in bits,
shall be equal to or greater than subprimeQLen . |
Throws | |
---|---|
IllegalArgumentException |
if primePLenLen ,
subprimeQLen , or seedLen is illegal per the
specification of FIPS 186-3. |
Public methods
getPrimePLength
public int getPrimePLength ()
Returns the desired length of the prime P of the to-be-generated DSA domain parameters in bits.
Returns | |
---|---|
int |
the length of the prime P. |
getSeedLength
public int getSeedLength ()
Returns the desired length of the domain parameter seed in bits.
Returns | |
---|---|
int |
the length of the domain parameter seed. |
getSubprimeQLength
public int getSubprimeQLength ()
Returns the desired length of the sub-prime Q of the to-be-generated DSA domain parameters in bits.
Returns | |
---|---|
int |
the length of the sub-prime Q. |