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 | |
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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 | |
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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 | |
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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 | |
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primePLen | int : the desired length of the prime P in bits. |
subprimeQLen | int : the desired length of the sub-prime Q in bits. |
Throws | |
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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 | |
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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. |