org.spongycastle.jcajce.provider.asymmetric.ec

Class KeyAgreementSpi

java.lang.Object

javax.crypto.KeyAgreementSpi

org.spongycastle.jcajce.provider.asymmetric.util.BaseAgreementSpi

org.spongycastle.jcajce.provider.asymmetric.ec.KeyAgreementSpi

Direct Known Subclasses:

KeyAgreementSpi.CDHwithSHA1KDFAndSharedInfo, KeyAgreementSpi.CDHwithSHA224KDFAndSharedInfo, KeyAgreementSpi.CDHwithSHA256KDFAndSharedInfo, KeyAgreementSpi.CDHwithSHA384KDFAndSharedInfo, KeyAgreementSpi.CDHwithSHA512KDFAndSharedInfo, KeyAgreementSpi.DH, KeyAgreementSpi.DHC, KeyAgreementSpi.DHwithSHA1CKDF, KeyAgreementSpi.DHwithSHA1KDF, KeyAgreementSpi.DHwithSHA1KDFAndSharedInfo, KeyAgreementSpi.DHwithSHA224KDFAndSharedInfo, KeyAgreementSpi.DHwithSHA256CKDF, KeyAgreementSpi.DHwithSHA256KDFAndSharedInfo, KeyAgreementSpi.DHwithSHA384CKDF, KeyAgreementSpi.DHwithSHA384KDFAndSharedInfo, KeyAgreementSpi.DHwithSHA512CKDF, KeyAgreementSpi.DHwithSHA512KDFAndSharedInfo, KeyAgreementSpi.MQV, KeyAgreementSpi.MQVwithSHA1CKDF, KeyAgreementSpi.MQVwithSHA1KDFAndSharedInfo, KeyAgreementSpi.MQVwithSHA224CKDF, KeyAgreementSpi.MQVwithSHA224KDFAndSharedInfo, KeyAgreementSpi.MQVwithSHA256CKDF, KeyAgreementSpi.MQVwithSHA256KDFAndSharedInfo, KeyAgreementSpi.MQVwithSHA384CKDF, KeyAgreementSpi.MQVwithSHA384KDFAndSharedInfo, KeyAgreementSpi.MQVwithSHA512CKDF, KeyAgreementSpi.MQVwithSHA512KDFAndSharedInfo

public class KeyAgreementSpi
extends BaseAgreementSpi

Diffie-Hellman key agreement using elliptic curve keys, ala IEEE P1363 both the simple one, and the simple one with cofactors are supported. Also, MQV key agreement per SEC-1

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	KeyAgreementSpi.CDHwithSHA1KDFAndSharedInfo
static class	KeyAgreementSpi.CDHwithSHA224KDFAndSharedInfo
static class	KeyAgreementSpi.CDHwithSHA256KDFAndSharedInfo
static class	KeyAgreementSpi.CDHwithSHA384KDFAndSharedInfo
static class	KeyAgreementSpi.CDHwithSHA512KDFAndSharedInfo
static class	KeyAgreementSpi.DH
static class	KeyAgreementSpi.DHC
static class	KeyAgreementSpi.DHwithSHA1CKDF
static class	KeyAgreementSpi.DHwithSHA1KDF
static class	KeyAgreementSpi.DHwithSHA1KDFAndSharedInfo
static class	KeyAgreementSpi.DHwithSHA224KDFAndSharedInfo
static class	KeyAgreementSpi.DHwithSHA256CKDF
static class	KeyAgreementSpi.DHwithSHA256KDFAndSharedInfo
static class	KeyAgreementSpi.DHwithSHA384CKDF
static class	KeyAgreementSpi.DHwithSHA384KDFAndSharedInfo
static class	KeyAgreementSpi.DHwithSHA512CKDF
static class	KeyAgreementSpi.DHwithSHA512KDFAndSharedInfo
static class	KeyAgreementSpi.MQV
static class	KeyAgreementSpi.MQVwithSHA1CKDF
static class	KeyAgreementSpi.MQVwithSHA1KDFAndSharedInfo
static class	KeyAgreementSpi.MQVwithSHA224CKDF
static class	KeyAgreementSpi.MQVwithSHA224KDFAndSharedInfo
static class	KeyAgreementSpi.MQVwithSHA256CKDF
static class	KeyAgreementSpi.MQVwithSHA256KDFAndSharedInfo
static class	KeyAgreementSpi.MQVwithSHA384CKDF
static class	KeyAgreementSpi.MQVwithSHA384KDFAndSharedInfo
static class	KeyAgreementSpi.MQVwithSHA512CKDF
static class	KeyAgreementSpi.MQVwithSHA512KDFAndSharedInfo

Field Summary

Fields inherited from class org.spongycastle.jcajce.provider.asymmetric.util.BaseAgreementSpi

result, ukmParameters

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	KeyAgreementSpi(java.lang.String kaAlgorithm, org.spongycastle.crypto.BasicAgreement agreement, org.spongycastle.crypto.DerivationFunction kdf)

Method Summary

Modifier and Type	Method and Description
protected byte[]	bigIntToBytes(java.math.BigInteger r)
protected java.security.Key	engineDoPhase(java.security.Key key, boolean lastPhase)
protected void	engineInit(java.security.Key key, java.security.spec.AlgorithmParameterSpec params, java.security.SecureRandom random)
protected void	engineInit(java.security.Key key, java.security.SecureRandom random)

Methods inherited from class org.spongycastle.jcajce.provider.asymmetric.util.BaseAgreementSpi

engineGenerateSecret, engineGenerateSecret, engineGenerateSecret, getAlgorithm, getKeySize, trimZeroes

Methods inherited from class java.lang.Object

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

Constructor Detail

KeyAgreementSpi

protected KeyAgreementSpi(java.lang.String kaAlgorithm,
                          org.spongycastle.crypto.BasicAgreement agreement,
                          org.spongycastle.crypto.DerivationFunction kdf)

Method Detail

bigIntToBytes

protected byte[] bigIntToBytes(java.math.BigInteger r)

Specified by:

bigIntToBytes in class BaseAgreementSpi

engineDoPhase

protected java.security.Key engineDoPhase(java.security.Key key,
                                          boolean lastPhase)
                                   throws java.security.InvalidKeyException,
                                          java.lang.IllegalStateException

Specified by:

engineDoPhase in class javax.crypto.KeyAgreementSpi

Throws:

java.security.InvalidKeyException

java.lang.IllegalStateException

engineInit

protected void engineInit(java.security.Key key,
                          java.security.spec.AlgorithmParameterSpec params,
                          java.security.SecureRandom random)
                   throws java.security.InvalidKeyException,
                          java.security.InvalidAlgorithmParameterException

Specified by:

engineInit in class javax.crypto.KeyAgreementSpi

Throws:

java.security.InvalidKeyException

java.security.InvalidAlgorithmParameterException

engineInit

protected void engineInit(java.security.Key key,
                          java.security.SecureRandom random)
                   throws java.security.InvalidKeyException

Specified by:

engineInit in class javax.crypto.KeyAgreementSpi

Throws:

java.security.InvalidKeyException