com.absio.crypto.key

Class KeyPairHelper

java.lang.Object

com.absio.crypto.key.KeyPairHelper

public class KeyPairHelper
extends Object

A helper class for generating asymmetric keys. The helper uses the JCE KeyPairGenerator class to generate keys and the KeyPairHelper.KeyAlgorithm to define the algorithm to use in the key generation process.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	KeyPairHelper.KeyAlgorithm This enumeration represents the asymmetric key algorithms that Absio knowingly supports.

Constructor Summary

Constructors

Constructor and Description
KeyPairHelper() Create a KeyPairHelper using the KeyPairHelper.KeyAlgorithm.DEFAULT algorithm.
KeyPairHelper(KeyPairHelper.KeyAlgorithm algorithm) Create a KeyPairHelper using the given KeyPairHelper.KeyAlgorithm.

Method Summary

Modifier and Type	Method and Description
KeyPair	generateKeyPair(EllipticCurve curve) Generate a new asymmetric KeyPair using the helper's KeyPairHelper.KeyAlgorithm.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

KeyPairHelper

public KeyPairHelper()
              throws NoSuchAlgorithmException

Create a KeyPairHelper using the KeyPairHelper.KeyAlgorithm.DEFAULT algorithm.

Throws:

NoSuchAlgorithmException - thrown if the algorithm is not supported

KeyPairHelper

public KeyPairHelper(KeyPairHelper.KeyAlgorithm algorithm)
              throws NoSuchAlgorithmException

Create a KeyPairHelper using the given KeyPairHelper.KeyAlgorithm.

Parameters:

algorithm - the algorithm to use for key generation

Throws:

NoSuchAlgorithmException - thrown if the algorithm is not supported

Method Detail

generateKeyPair

public KeyPair generateKeyPair(EllipticCurve curve)
                        throws InvalidAlgorithmParameterException

Generate a new asymmetric KeyPair using the helper's KeyPairHelper.KeyAlgorithm.

Parameters:

curve - the elliptic curve to initialize the generator with

Returns:

a new elliptic cure KeyPair of the given curve

Throws:

InvalidAlgorithmParameterException - thrown if the elliptic curve is not supported