Top Description Fields Constructors Methods
org.bouncycastle.crypto.agreement

public Class ECDHBasicAgreement

extends Object
implements BasicAgreement
Class Inheritance
All Implemented Interfaces
org.bouncycastle.crypto.BasicAgreement
Imports
java.math.BigInteger, org.bouncycastle.crypto.BasicAgreement, .CipherParameters, .CryptoServicesRegistrar, org.bouncycastle.crypto.params.ECDomainParameters, .ECPrivateKeyParameters, .ECPublicKeyParameters, org.bouncycastle.math.ec.ECAlgorithms, .ECConstants, .ECPoint
P1363 7.2.1 ECSVDP-DH ECSVDP-DH is Elliptic Curve Secret Value Derivation Primitive, Diffie-Hellman version. It is based on the work of [DH76], [Mil86], and [Kob87]. This primitive derives a shared secret value from one party's private key and another party's public key, where both have the same set of EC domain parameters. If two parties correctly execute this primitive, they will produce the same output. This primitive can be invoked by a scheme to derive a shared secret key; specifically, it may be used with the schemes ECKAS-DH1 and DL/ECKAS-DH2. It assumes that the input keys are valid (see also Section 7.2.2).

Field Summary

Modifier and TypeField and Description
private ECPrivateKeyParameters
key

Constructor Summary

AccessConstructor and Description
public
ECDHBasicAgreement()

Method Summary

Modifier and TypeMethod and Description
public BigInteger
calculateAgreement(CipherParameters pubKey)

Implements org.bouncycastle.crypto.BasicAgreement.calculateAgreement.

given a public key from a given party calculate the next message in the agreement sequence.
public int
getFieldSize()

Implements org.bouncycastle.crypto.BasicAgreement.getFieldSize.

return the field size for the agreement algorithm in bytes.
public void
init(CipherParameters key)

Implements org.bouncycastle.crypto.BasicAgreement.init.

initialise the agreement engine.
Inherited from java.lang.Object:
cloneequalsfinalizegetClasshashCodenotifynotifyAlltoStringwaitwaitwait

Field Detail

keyback to summary
private ECPrivateKeyParameters key

Constructor Detail

ECDHBasicAgreementback to summary
public ECDHBasicAgreement()

Method Detail

calculateAgreementback to summary
public BigInteger calculateAgreement(CipherParameters pubKey)

Implements org.bouncycastle.crypto.BasicAgreement.calculateAgreement.

Doc from org.bouncycastle.crypto.BasicAgreement.calculateAgreement.

given a public key from a given party calculate the next message in the agreement sequence.

getFieldSizeback to summary
public int getFieldSize()

Implements org.bouncycastle.crypto.BasicAgreement.getFieldSize.

Doc from org.bouncycastle.crypto.BasicAgreement.getFieldSize.

return the field size for the agreement algorithm in bytes.

initback to summary
public void init(CipherParameters key)

Implements org.bouncycastle.crypto.BasicAgreement.init.

Doc from org.bouncycastle.crypto.BasicAgreement.init.

initialise the agreement engine.