hera.util.pki

Class ECDSAKeyGenerator

java.lang.Object

hera.util.pki.ECDSAKeyGenerator

All Implemented Interfaces:

KeyGenerator<ECDSAKey>

public class ECDSAKeyGenerator
extends java.lang.Object
implements KeyGenerator<ECDSAKey>

Field Summary

Fields

Modifier and Type	Field and Description
protected static java.lang.String	CURVE_NAME
static org.bouncycastle.crypto.params.ECDomainParameters	ecParams
protected static org.bouncycastle.jce.spec.ECNamedCurveParameterSpec	ecSpec
protected static java.lang.String	KEY_ALGORITHM
protected org.slf4j.Logger	logger

Constructor Summary

Constructors

Constructor and Description
ECDSAKeyGenerator()

Method Summary

Modifier and Type	Method and Description
ECDSAKey	create()
ECDSAKey	create(java.math.BigInteger d) Create key-pair from encoded private key.
ECDSAKey	create(byte[] encodedPrivateKey) Create key-pair from encoded private key.
ECDSAKey	create(java.security.PrivateKey privateKey) Create key-pair from a private key.
ECDSAKey	create(java.lang.String seed)
java.security.PrivateKey	createPrivateKey(java.math.BigInteger d) Create private key from d value.
java.security.PublicKey	createPublicKey(java.math.BigInteger x, java.math.BigInteger y) Create public key from ECPoint x, y value.
java.security.PublicKey	createPublicKey(byte[] compressed) Create public key from compressed one.
protected java.security.PublicKey	createPublicKey(org.bouncycastle.math.ec.ECPoint ecPoint)
protected ECDSAKey	generateKey(java.security.SecureRandom secureRandom)
protected java.security.KeyPairGenerator	getKeyPairGenerator(java.security.SecureRandom secureRandom)

Methods inherited from class java.lang.Object

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

Field Detail

KEY_ALGORITHM

protected static final java.lang.String KEY_ALGORITHM

See Also:

Constant Field Values

CURVE_NAME

protected static final java.lang.String CURVE_NAME

See Also:

Constant Field Values

ecSpec

protected static final org.bouncycastle.jce.spec.ECNamedCurveParameterSpec ecSpec

ecParams

public static final org.bouncycastle.crypto.params.ECDomainParameters ecParams

logger

protected final transient org.slf4j.Logger logger

Constructor Detail

ECDSAKeyGenerator

public ECDSAKeyGenerator()

Method Detail

generateKey

protected ECDSAKey generateKey(java.security.SecureRandom secureRandom)
                        throws java.security.NoSuchProviderException,
                               java.security.NoSuchAlgorithmException,
                               java.security.InvalidAlgorithmParameterException

Throws:

java.security.NoSuchProviderException

java.security.NoSuchAlgorithmException

java.security.InvalidAlgorithmParameterException

getKeyPairGenerator

protected java.security.KeyPairGenerator getKeyPairGenerator(java.security.SecureRandom secureRandom)
                                                      throws java.security.NoSuchProviderException,
                                                             java.security.NoSuchAlgorithmException,
                                                             java.security.InvalidAlgorithmParameterException

Throws:

java.security.NoSuchProviderException

java.security.NoSuchAlgorithmException

java.security.InvalidAlgorithmParameterException

create

public ECDSAKey create()
                throws java.lang.Exception

Specified by:

create in interface KeyGenerator<ECDSAKey>

Throws:

java.lang.Exception

create

public ECDSAKey create(java.lang.String seed)
                throws java.lang.Exception

Specified by:

create in interface KeyGenerator<ECDSAKey>

Throws:

java.lang.Exception

create

public ECDSAKey create(byte[] encodedPrivateKey)
                throws java.lang.Exception

Create key-pair from encoded private key.

Parameters:

encodedPrivateKey - PKCS #8 encoded private key

Returns:

key pair to be recovered

Throws:

java.lang.Exception - On failure of recovery

create

public ECDSAKey create(java.math.BigInteger d)
                throws java.lang.Exception

Create key-pair from encoded private key.

Parameters:

d - d value of private key

Returns:

key pair to be recovered

Throws:

java.lang.Exception - On failure of recovery

create

public ECDSAKey create(java.security.PrivateKey privateKey)
                throws java.lang.Exception

Create key-pair from a private key.

Parameters:

privateKey - a private key

Returns:

key pair to be recovered

Throws:

java.lang.Exception - On failure of recovery

createPrivateKey

public java.security.PrivateKey createPrivateKey(java.math.BigInteger d)
                                          throws java.lang.Exception

Create private key from d value.

Parameters:

d - d value of private key

Returns:

a generated private key

Throws:

java.lang.Exception - on failure of create

createPublicKey

public java.security.PublicKey createPublicKey(byte[] compressed)
                                        throws java.lang.Exception

Create public key from compressed one. The compression format is Fp( X9.62 s 4.2.1).

Parameters:

compressed - an compressed

Returns:

a generated public key

Throws:

java.lang.Exception - on failure of create

createPublicKey

public java.security.PublicKey createPublicKey(java.math.BigInteger x,
                                               java.math.BigInteger y)
                                        throws java.lang.Exception

Create public key from ECPoint x, y value.

Parameters:

x - x value of public key

y - y value of public key

Returns:

a generated public key

Throws:

java.lang.Exception - on failure of create

createPublicKey

protected java.security.PublicKey createPublicKey(org.bouncycastle.math.ec.ECPoint ecPoint)
                                           throws java.lang.Exception

Throws:

java.lang.Exception