public class DHParameterSpec extends Object implements AlgorithmParameterSpec
A central authority generates parameters and gives them to the two
entities seeking to generate a secret key. The parameters are a prime
p, a base g, and optionally the length
in bits of the private value, l.
It is possible that more than one instance of parameters may be generated by a given central authority, and that there may be more than one central authority. Indeed, each individual may be its own central authority, with different entities having different parameters.
Note that this class does not perform any validation on specified parameters. Thus, the specified values are returned directly even if they are null.
KeyAgreement| Constructor and Description |
|---|
DHParameterSpec(BigInteger p,
BigInteger g)
Constructs a parameter set for Diffie-Hellman, using a prime modulus
p and a base generator g. |
DHParameterSpec(BigInteger p,
BigInteger g,
int l)
Constructs a parameter set for Diffie-Hellman, using a prime modulus
p, a base generator g,
and the size in bits, l, of the random exponent
(private value). |
| Modifier and Type | Method and Description |
|---|---|
BigInteger |
getG()
Returns the base generator
g. |
int |
getL()
Returns the size in bits,
l, of the random exponent
(private value). |
BigInteger |
getP()
Returns the prime modulus
p. |
public DHParameterSpec(BigInteger p, BigInteger g)
p and a base generator g.p - the prime modulusg - the base generatorpublic DHParameterSpec(BigInteger p, BigInteger g, int l)
p, a base generator g,
and the size in bits, l, of the random exponent
(private value).p - the prime modulusg - the base generatorl - the size in bits of the random exponent (private value)public BigInteger getP()
p.ppublic BigInteger getG()
g.gpublic int getL()
l, of the random exponent
(private value).l, of the random exponent
(private value), or 0 if this size has not been set Submit a bug or feature
For further API reference and developer documentation, see Java SE Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.
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