com.entrust.toolkit.security.provider

Class ECDSAKeyPairGenerator

java.lang.Object

java.security.KeyPairGeneratorSpi

java.security.KeyPairGenerator

com.entrust.toolkit.security.provider.ECDSAKeyPairGenerator

Deprecated.

since 7.2 SP2; use EcKeyPairGenerator instead

public class ECDSAKeyPairGenerator
extends java.security.KeyPairGenerator

Enables the generation of ECDSA key pairs as defined in X9.62.

An ECDSAKeyPairGenerator object can be created using the class constructor or using the KeyPairGenerator class as follows:

 ECDSAKeyPairGenerator keygen = (ECDSAKeyPairGenerator) KeyPairGenerator.getInstance("ECDSA");
 

Note

Without the explicit cast — (ECDSAKeyPairGenerator) — the initialize methods do not work and no exceptions are thrown.

Constructor Summary

Constructors

Constructor and Description
ECDSAKeyPairGenerator() Deprecated. The default public constructor — calls the super constructor with the String, "ECDSA".

Method Summary

Methods

Modifier and Type	Method and Description
java.security.KeyPair	generateKeyPair() Deprecated. Generates an ECDSA key pair.
void	initialize(java.security.spec.AlgorithmParameterSpec params) Deprecated. Initializes the key pair generator using the specified parameter set.
void	initialize(java.security.spec.AlgorithmParameterSpec params, java.security.SecureRandom random) Deprecated. Initializes the key pair generator using the specified parameter set and user-provided source of randomness.
void	initialize(int keysize) Deprecated. Initializes the key pair generator for a certain keysize using the default parameter set.
void	initialize(int keysize, java.security.SecureRandom random) Deprecated. Initializes the key pair generator for a certain keysize using the default parameter set.

Methods inherited from class java.security.KeyPairGenerator

genKeyPair, getAlgorithm, getInstance, getInstance, getInstance, getProvider

Methods inherited from class java.lang.Object

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

Constructor Detail

ECDSAKeyPairGenerator

public ECDSAKeyPairGenerator()

Deprecated.

The default public constructor — calls the super constructor with the String, "ECDSA".

Method Detail

generateKeyPair

public java.security.KeyPair generateKeyPair()

Deprecated.

Generates an ECDSA key pair.

If an initialization method is called using a KeyPairGenerator interface, algorithm-specific defaults will be used. The default curve is labeled x962p192r1 — as defined in X9.62 with object identifier 1.2.840.10045.3.1.1.

Overrides:

generateKeyPair in class java.security.KeyPairGenerator

Returns:

the newly generated EC KeyPair

Throws:

java.lang.IllegalArgumentException - if any of the following conditions are satisfied:

• The ASN1Object is not of the expected format
• The named curve is not known or is not registered
• The parsed base point power raised to the parsed order, is not equal to the point at infinity on the given curve contained in base point

java.lang.SecurityException - thrown if the FIPS Security Engine is in the FIPS error state

initialize

public void initialize(java.security.spec.AlgorithmParameterSpec params,
              java.security.SecureRandom random)
                throws java.security.InvalidAlgorithmParameterException

Deprecated.

Initializes the key pair generator using the specified parameter set and user-provided source of randomness.

Overrides:

initialize in class java.security.KeyPairGenerator

Parameters:

params - the parameter set used to generate the keys

random - the source of randomness for this generator — will be ignored and the default source of randomness will be used instead

Throws:

java.security.InvalidAlgorithmParameterException - if params is not an ECParameter object and if the key size in params is less than 160 bits

Since:

7.0

initialize

public void initialize(java.security.spec.AlgorithmParameterSpec params)
                throws java.security.InvalidAlgorithmParameterException

Deprecated.

Initializes the key pair generator using the specified parameter set.

Overrides:

initialize in class java.security.KeyPairGenerator

Parameters:

params - the parameter set used to generate the keys

Throws:

java.security.InvalidAlgorithmParameterException - if params is not an ECParameter object and if the key size in params is less than 160 bits

Since:

7.0

initialize

public void initialize(int keysize,
              java.security.SecureRandom random)
                throws java.security.InvalidParameterException

Deprecated.

Initializes the key pair generator for a certain keysize using the default parameter set.

The default curve is taken from the set of named curves that consists of all named curves defined in X9.62 and those registered using the NamedCurveFactory.register method.

Overrides:

initialize in class java.security.KeyPairGenerator

Parameters:

keysize - an algorithm-specific metric — the size of the underlying field of the curve, specified as the number of bits - the parameter set used to generate the keys

Note

Precondition: the size must at least 160 bits and must either be supported by one of the named curves in X9.62, or by a curve that has been explicitly registered using the NamedCurveFactory class.

random - the source of randomness for this generator — will be ignored and the default source of randomness will be used instead

Throws:

java.security.InvalidParameterException - if the key size is not supported and if the key size is less than 160

initialize

public void initialize(int keysize)
                throws java.security.InvalidParameterException

Deprecated.

Initializes the key pair generator for a certain keysize using the default parameter set.

The default curve is taken from the set of named curves that consists of all named curves defined in X9.62 and those registered using the NamedCurveFactory.register method.

Overrides:

initialize in class java.security.KeyPairGenerator

Parameters:

keysize - an algorithm-specific metric — the size of the underlying field of the curve, specified as the number of bits - the parameter set used to generate the keys

Note

Precondition: the size must at least 160 bits and must either be supported by one of the named curves in X9.62, or by a curve that has been explicitly registered using the NamedCurveFactory class.

Throws:

java.security.InvalidParameterException - if the key size is not supported and if the key size is less than 160