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Added in API level 1

Summary: Ctors | Methods | Inherited Methods | [Expand All]

DHParameterSpec

public class DHParameterSpec
extends Object implements AlgorithmParameterSpec

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.

Note that this class does not perform any validation on specified parameters. Thus, the specified values are returned directly even if they are null.

See also:

KeyAgreement

Summary

Public constructors
`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).

Public methods
`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`.

Inherited methods

From class


  
    java.lang.Object

`Object`	`clone()` Creates and returns a copy of this object.
`boolean`	`equals(Object obj)` Indicates whether some other object is "equal to" this one.
`void`	`finalize()` Called by the garbage collector on an object when garbage collection determines that there are no more references to the object.
`final Class<?>`	`getClass()` Returns the runtime class of this `Object`.
`int`	`hashCode()` Returns a hash code value for the object.
`final void`	`notify()` Wakes up a single thread that is waiting on this object's monitor.
`final void`	`notifyAll()` Wakes up all threads that are waiting on this object's monitor.
`String`	`toString()` Returns a string representation of the object.
`final void`	`wait(long millis, int nanos)` Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object, or some other thread interrupts the current thread, or a certain amount of real time has elapsed.
`final void`	`wait(long millis)` Causes the current thread to wait until either another thread invokes the `notify()` method or the `notifyAll()` method for this object, or a specified amount of time has elapsed.
`final void`	`wait()` Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object.

Public constructors