compact1, compact2, compact3
java.security.spec
Class DSAGenParameterSpec
- java.lang.Object
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- java.security.spec.DSAGenParameterSpec
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- All Implemented Interfaces:
- AlgorithmParameterSpec
public final class DSAGenParameterSpec extends Object implements AlgorithmParameterSpec
This immutable class specifies the set of parameters used for generating DSA parameters as specified in FIPS 186-3 Digital Signature Standard (DSS).- Since:
- 8
- See Also:
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AlgorithmParameterSpec
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Constructor Summary
Constructors Constructor and Description DSAGenParameterSpec(int primePLen, int subprimeQLen)Creates a domain parameter specification for DSA parameter generation usingprimePLenandsubprimeQLen.DSAGenParameterSpec(int primePLen, int subprimeQLen, int seedLen)Creates a domain parameter specification for DSA parameter generation usingprimePLen,subprimeQLen, andseedLen.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method and Description intgetPrimePLength()Returns the desired length of the prime P of the to-be-generated DSA domain parameters in bits.intgetSeedLength()Returns the desired length of the domain parameter seed in bits.intgetSubprimeQLength()Returns the desired length of the sub-prime Q of the to-be-generated DSA domain parameters in bits.
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Constructor Detail
DSAGenParameterSpec
public DSAGenParameterSpec(int primePLen, int subprimeQLen)Creates a domain parameter specification for DSA parameter generation usingprimePLenandsubprimeQLen. The value ofsubprimeQLenis also used as the default length of the domain parameter seed in bits.- Parameters:
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primePLen- the desired length of the prime P in bits. -
subprimeQLen- the desired length of the sub-prime Q in bits. - Throws:
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IllegalArgumentException- ifprimePLenorsubprimeQLenis 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 usingprimePLen,subprimeQLen, andseedLen.- Parameters:
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primePLen- the desired length of the prime P in bits. -
subprimeQLen- the desired length of the sub-prime Q in bits. -
seedLen- the desired length of the domain parameter seed in bits, shall be equal to or greater thansubprimeQLen. - Throws:
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IllegalArgumentException- ifprimePLenLen,subprimeQLen, orseedLenis illegal per the specification of FIPS 186-3.
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Method Detail
getPrimePLength
public int getPrimePLength()
Returns the desired length of the prime P of the to-be-generated DSA domain parameters in bits.- Returns:
- the length of the prime P.
getSubprimeQLength
public int getSubprimeQLength()
Returns the desired length of the sub-prime Q of the to-be-generated DSA domain parameters in bits.- Returns:
- the length of the sub-prime Q.
getSeedLength
public int getSeedLength()
Returns the desired length of the domain parameter seed in bits.- Returns:
- the length of the domain parameter seed.
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