Package org.bouncycastle.jcajce.provider.asymmetric.ecgost12

## Class KeyAgreementSpi

- java.lang.Object
- - javax.crypto.KeyAgreementSpi
  - - org.bouncycastle.jcajce.provider.asymmetric.util.BaseAgreementSpi
    - - org.bouncycastle.jcajce.provider.asymmetric.ecgost12.KeyAgreementSpi

- Direct Known Subclasses:
    `KeyAgreementSpi.ECVKO256`, `KeyAgreementSpi.ECVKO512`

      public class KeyAgreementSpi
      extends BaseAgreementSpi

- - ### Nested Class Summary

    Nested Classes
    Modifier and Type | Class | Description
    --- | --- | ---
    `static class` | `KeyAgreementSpi.ECVKO256` |
    `static class` | `KeyAgreementSpi.ECVKO512` |

  - ### Field Summary

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

      `kdf, ukmParameters`

  - ### Constructor Summary

    Constructors
    Modifier | Constructor | Description
    --- | --- | ---
    `protected` | `KeyAgreementSpi​(java.lang.String kaAlgorithm, ECVKOAgreement agreement, DerivationFunction kdf)` |

  - ### Method Summary

    All Methods Instance Methods Concrete Methods
    Modifier and Type | Method | Description
    --- | --- | ---
    `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,
                                    ECVKOAgreement agreement,
                                    DerivationFunction kdf)

  - ### Method Detail

    - #### 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`