org.eclipse.californium.scandium.dtls.cipher

Class ECDHECryptography

java.lang.Object

org.eclipse.californium.scandium.dtls.cipher.ECDHECryptography

Deprecated.

use XECDHECryptography instead

@Deprecated
public final class ECDHECryptography
extends Object

A helper class to execute the ECDHE key agreement and key generation.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	ECDHECryptography.SupportedGroup Deprecated. The Supported Groups as defined in the official IANA Transport Layer Security (TLS) Parameters.

Field Summary

Fields

Modifier and Type	Field and Description
protected static org.slf4j.Logger	LOGGER Deprecated.

Constructor Summary

Constructors

Constructor and Description
ECDHECryptography(ECParameterSpec params) Deprecated. Creates an ephemeral ECDH key pair for a given set of EC domain parameters.

Method Summary

Methods

Modifier and Type	Method and Description
static byte[]	encodePoint(ECPoint point, EllipticCurve curve) Deprecated. Encodes an EC point according to the X9.62 specification.
static ECDHECryptography	fromNamedCurveId(int supportedGroupId) Deprecated. Creates an ephemeral ECDH key pair for a supported group (named curve).
SecretKey	generateSecret(byte[] encodedPoint) Deprecated. Called by the server.
SecretKey	generateSecret(PublicKey peerPublicKey) Deprecated. Runs the specified key agreement algorithm (ECDH) to generate the premaster secret.
PrivateKey	getPrivateKey() Deprecated.
ECPublicKey	getPublicKey() Deprecated.
static byte[]	trimZeroes(byte[] byeArray) Deprecated. Trims the leading zeros.

Methods inherited from class java.lang.Object

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

Field Detail

LOGGER

protected static final org.slf4j.Logger LOGGER

Deprecated.

Constructor Detail

ECDHECryptography

public ECDHECryptography(ECParameterSpec params)
                  throws GeneralSecurityException

Deprecated.

Creates an ephemeral ECDH key pair for a given set of EC domain parameters. This constructor is usually invoked by the client after having received the params in the SERVER_KEY_EXCHANGE message.

Parameters:

params - the domain parameters to create the keys for

Throws:

GeneralSecurityException - if the key pair cannot be created from the given parameters

Method Detail

fromNamedCurveId

public static ECDHECryptography fromNamedCurveId(int supportedGroupId)

Deprecated.

Creates an ephemeral ECDH key pair for a supported group (named curve).

Parameters:

supportedGroupId - the ID of the supported group (named curve) which will be used to create the keys

Returns:

the object containing the keys or null if the group with the given id is not supported by the JRE's cryptography provider(s)

getPrivateKey

public PrivateKey getPrivateKey()

Deprecated.

getPublicKey

public ECPublicKey getPublicKey()

Deprecated.

generateSecret

public SecretKey generateSecret(byte[] encodedPoint)

Deprecated.

Called by the server. Extracts the client's public key from the encoded point and then runs the specified key agreement algorithm (ECDH) to generate the premaster secret.

Parameters:

encodedPoint - the client's public key (encoded)

Returns:

the premaster secret

generateSecret

public SecretKey generateSecret(PublicKey peerPublicKey)

Deprecated.

Runs the specified key agreement algorithm (ECDH) to generate the premaster secret.

Parameters:

peerPublicKey - the peer's ephemeral public key.

Returns:

the premaster secret.

trimZeroes

public static byte[] trimZeroes(byte[] byeArray)

Deprecated.

Trims the leading zeros.

Parameters:

byeArray - the byte array with possible leading zeros.

Returns:

the byte array with no leading zeros.

encodePoint

public static byte[] encodePoint(ECPoint point,
                 EllipticCurve curve)

Deprecated.

Encodes an EC point according to the X9.62 specification.

Parameters:

point - the EC point to be encoded.

curve - the elliptic curve the point lies on.

Returns:

the encoded EC point.