Class DSAParametersGenerator
- java.lang.Object
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- org.gudy.bouncycastle.crypto.generators.DSAParametersGenerator
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public class DSAParametersGenerator extends java.lang.Object
generate suitable parameters for DSA, in line with FIPS 186-2.
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Constructor Summary
Constructors Constructor Description DSAParametersGenerator()
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description private void
add(byte[] a, byte[] b, int value)
add value to b, returning the result in a.DSAParameters
generateParameters()
which generates the p and g values from the given parameters, returning the DSAParameters object.void
init(int size, int certainty, java.security.SecureRandom random)
initialise the key generator.
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Method Detail
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init
public void init(int size, int certainty, java.security.SecureRandom random)
initialise the key generator.- Parameters:
size
- size of the key (range 2^512 -> 2^1024 - 64 bit increments)certainty
- measure of robustness of prime (for FIPS 186-2 compliance this should be at least 80).random
- random byte source.
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add
private void add(byte[] a, byte[] b, int value)
add value to b, returning the result in a. The a value is treated as a BigInteger of length (a.length * 8) bits. The result is modulo 2^a.length in case of overflow.
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generateParameters
public DSAParameters generateParameters()
which generates the p and g values from the given parameters, returning the DSAParameters object.Note: can take a while...
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