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java.lang.Object | +--javax.crypto.spec.DHParameterSpec
This class specifies the set of parameters used with the Diffie-Hellman algorithm, as specified in PKCS #3: Diffie-Hellman Key-Agreement Standard.
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.
KeyAgreement
,
AlgorithmParameters
,
AlgorithmParameterSpec
Constructor Summary | |
DHParameterSpec(BigInteger p,
BigInteger g)
Specifies the Diffie-Hellman parameters, using a prime modulus p and a base generator g. |
|
DHParameterSpec(BigInteger p,
BigInteger g,
int l)
Specifies the Diffie-Hellman parameters, using a prime modulus p, a base generator g, and the size in bits, l, of the random exponent (private value). |
Method Summary | |
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. |
Methods inherited from class java.lang.Object |
clone,
equals,
finalize,
getClass,
hashCode,
notify,
notifyAll,
toString,
wait,
wait,
wait |
Constructor Detail |
public DHParameterSpec(BigInteger p, BigInteger g)
p
- the prime modulusg
- the base generatorpublic DHParameterSpec(BigInteger p, BigInteger g, int l)
p
- the prime modulusg
- the base generatorl
- the size in bits of the random exponent (private value)Method Detail |
public BigInteger getP()
public BigInteger getG()
public int getL()
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