java.lang.Object
- javax.crypto.KeyAgreementSpi
- - org.bouncycastle.jcajce.provider.asymmetric.util.BaseAgreementSpi
  - - org.bouncycastle.jcajce.provider.asymmetric.ec.KeyAgreementSpi

Direct Known Subclasses:

KeyAgreementSpi.CDHwithSHA1KDFAndSharedInfo, KeyAgreementSpi.CDHwithSHA224KDFAndSharedInfo, KeyAgreementSpi.CDHwithSHA256KDFAndSharedInfo, KeyAgreementSpi.CDHwithSHA384KDFAndSharedInfo, KeyAgreementSpi.CDHwithSHA512KDFAndSharedInfo, KeyAgreementSpi.DH, KeyAgreementSpi.DHC, KeyAgreementSpi.DHUC, KeyAgreementSpi.DHUwithSHA1CKDF, KeyAgreementSpi.DHUwithSHA224CKDF, KeyAgreementSpi.DHUwithSHA256CKDF, KeyAgreementSpi.DHUwithSHA384CKDF, KeyAgreementSpi.DHUwithSHA512CKDF, 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	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.DHUC`
`static class`	`KeyAgreementSpi.DHUwithSHA1CKDF`
`static class`	`KeyAgreementSpi.DHUwithSHA224CKDF`
`static class`	`KeyAgreementSpi.DHUwithSHA256CKDF`
`static class`	`KeyAgreementSpi.DHUwithSHA384CKDF`
`static class`	`KeyAgreementSpi.DHUwithSHA512CKDF`
`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.bouncycastle.jcajce.provider.asymmetric.util.BaseAgreementSpi
  ukmParameters

Constructor Summary

Constructors
Modifier	Constructor	Description
`protected`	`KeyAgreementSpi(java.lang.String kaAlgorithm, ECDHCUnifiedAgreement agreement, DerivationFunction kdf)`
`protected`	`KeyAgreementSpi(java.lang.String kaAlgorithm, BasicAgreement agreement, DerivationFunction kdf)`

Method Summary

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

Methods inherited from class org.bouncycastle.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,
                          BasicAgreement agreement,
                          DerivationFunction kdf)

KeyAgreementSpi

protected KeyAgreementSpi(java.lang.String kaAlgorithm,
                          ECDHCUnifiedAgreement agreement,
                          DerivationFunction kdf)

Method Detail

bigIntToBytes

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

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

calcSecret
```
protected byte[] calcSecret()
```
Specified by:

calcSecret in class BaseAgreementSpi

Class KeyAgreementSpi

Nested Class Summary

Field Summary

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

Constructor Summary

Method Summary

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

Methods inherited from class java.lang.Object

Constructor Detail

KeyAgreementSpi

KeyAgreementSpi

Method Detail

bigIntToBytes

engineDoPhase

engineInit

engineInit

calcSecret