demo.cms.ecc

Class ECCDemoUtil

java.lang.Object

demo.cms.ecc.ECCDemoUtil

public class ECCDemoUtil
extends java.lang.Object

Some utilities for the ECC demos.

Constructor Summary

Constructors

Constructor and Description
ECCDemoUtil()

Method Summary

Modifier and Type	Method and Description
static java.security.spec.AlgorithmParameterSpec	createParamSpec(java.lang.String curveName) Creates an EC AlgorithmParameterSpec for the given curve name.
static double	getECCelerateVersion() Gets the version of the IAIK ECCelerate provider (if used).
static java.lang.String	getJDKVersion() Gets the version number of the current JDK.
static iaik.cms.IaikProvider	installIaikEccelerateProvider() Installs the IAIK ECCelerate SecurityProvider.
static iaik.cms.IaikProvider	installIaikEccProvider() Installs an ECC supporting IAIK SecurityProvider.
static void	signCertificate(iaik.x509.X509Certificate cert, iaik.asn1.structures.AlgorithmID algorithm, java.security.PrivateKey issuerPK) Signs the given certificate with deterministic generation of parameter k (if supported).

Methods inherited from class java.lang.Object

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

Constructor Detail

ECCDemoUtil

public ECCDemoUtil()

Method Detail

installIaikEccProvider

public static iaik.cms.IaikProvider installIaikEccProvider()
                                                    throws java.lang.Exception

Installs an ECC supporting IAIK SecurityProvider. Depending on its presence in the classpath, either the new (ECCelerate) or old (IAIK-ECC) library is used.

Returns:

the ECC supporting IAIK SecurityProvider

Throws:

java.lang.Exception - if the IAIK ECC Provider cannot be installed

installIaikEccelerateProvider

public static iaik.cms.IaikProvider installIaikEccelerateProvider()
                                                           throws java.lang.Exception

Installs the IAIK ECCelerate SecurityProvider.

Returns:

the IAIK ECCelerate SecurityProvider

Throws:

java.lang.Exception - if the provider cannot be installed

getECCelerateVersion

public static double getECCelerateVersion()

Gets the version of the IAIK ECCelerate provider (if used).

Returns:

the version of the IAIK ECCelerate provider or -1 if IAIK ECCelerate is not used

createParamSpec

public static java.security.spec.AlgorithmParameterSpec createParamSpec(java.lang.String curveName)
                                                                 throws java.security.spec.InvalidParameterSpecException

Creates an EC AlgorithmParameterSpec for the given curve name.

Parameters:

curveName - the name of the curve

Returns:

the AlgorithmParameterSpec

Throws:

java.security.spec.InvalidParameterSpecException - if no AlgorithmParameterSpec for the given curve name is available or cannot be created

signCertificate

public static void signCertificate(iaik.x509.X509Certificate cert,
                                   iaik.asn1.structures.AlgorithmID algorithm,
                                   java.security.PrivateKey issuerPK)
                            throws java.security.InvalidKeyException,
                                   java.security.cert.CertificateException,
                                   java.security.NoSuchAlgorithmException

Signs the given certificate with deterministic generation of parameter k (if supported).

Parameters:

cert - the certificate to be signed

algorithm - the signature algorithm

issuerPK - the issuer private key

Throws:

java.security.NoSuchAlgorithmException

java.security.cert.CertificateException

java.security.InvalidKeyException

getJDKVersion

public static java.lang.String getJDKVersion()

Gets the version number of the current JDK.

Returns:

the JDK version number