Package org.bouncycastle.jcajce.provider.asymmetric.util

## Class ECUtil

- java.lang.Object
- - org.bouncycastle.jcajce.provider.asymmetric.util.ECUtil

-     public class ECUtil
      extends java.lang.Object

  utility class for converting jce/jca ECDSA, ECDH, and ECDHC objects into their org.bouncycastle.crypto counterparts.

- - ### Constructor Summary

    Constructors
    Constructor | Description
    --- | ---
    `ECUtil()` |

  - ### Method Summary

    All Methods Static Methods Concrete Methods
    Modifier and Type | Method | Description
    --- | --- | ---
    `static java.lang.String` | `generateKeyFingerprint​(ECPoint publicPoint, ECParameterSpec spec)` |
    `static AsymmetricKeyParameter` | `generatePrivateKeyParameter​(java.security.PrivateKey key)` |
    `static AsymmetricKeyParameter` | `generatePublicKeyParameter​(java.security.PublicKey key)` |
    `static java.lang.String` | `getCurveName​(ASN1ObjectIdentifier oid)` |
    `static ECDomainParameters` | `getDomainParameters​(ProviderConfiguration configuration, X962Parameters params)` |
    `static ECDomainParameters` | `getDomainParameters​(ProviderConfiguration configuration, ECParameterSpec params)` |
    `static X9ECParameters` | `getNamedCurveByName​(java.lang.String curveName)` |
    `static X9ECParameters` | `getNamedCurveByOid​(ASN1ObjectIdentifier oid)` |
    `static ASN1ObjectIdentifier` | `getNamedCurveOid​(java.lang.String curveName)` |
    `static ASN1ObjectIdentifier` | `getNamedCurveOid​(ECParameterSpec ecParameterSpec)` |
    `static java.lang.String` | `getNameFrom​(java.security.spec.AlgorithmParameterSpec paramSpec)` |
    `static int` | `getOrderBitLength​(ProviderConfiguration configuration, java.math.BigInteger order, java.math.BigInteger privateValue)` |
    `static java.lang.String` | `privateKeyToString​(java.lang.String algorithm, java.math.BigInteger d, ECParameterSpec spec)` |
    `static java.lang.String` | `publicKeyToString​(java.lang.String algorithm, ECPoint q, ECParameterSpec spec)` |

    - ### Methods inherited from class java.lang.Object

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

- - ### Constructor Detail

    - #### ECUtil

          public ECUtil()

  - ### Method Detail

    - #### getDomainParameters

          public static ECDomainParameters getDomainParameters​(ProviderConfiguration configuration,
                                                               ECParameterSpec params)

    - #### getDomainParameters

          public static ECDomainParameters getDomainParameters​(ProviderConfiguration configuration,
                                                               X962Parameters params)

    - #### generatePublicKeyParameter

          public static AsymmetricKeyParameter generatePublicKeyParameter​(java.security.PublicKey key)
                                                                   throws java.security.InvalidKeyException

      Throws:
        `java.security.InvalidKeyException`

    - #### generatePrivateKeyParameter

          public static AsymmetricKeyParameter generatePrivateKeyParameter​(java.security.PrivateKey key)
                                                                    throws java.security.InvalidKeyException

      Throws:
        `java.security.InvalidKeyException`

    - #### getOrderBitLength

          public static int getOrderBitLength​(ProviderConfiguration configuration,
                                              java.math.BigInteger order,
                                              java.math.BigInteger privateValue)

    - #### getNamedCurveOid

          public static ASN1ObjectIdentifier getNamedCurveOid​(java.lang.String curveName)

    - #### getNamedCurveOid

          public static ASN1ObjectIdentifier getNamedCurveOid​(ECParameterSpec ecParameterSpec)

    - #### getNamedCurveByOid

          public static X9ECParameters getNamedCurveByOid​(ASN1ObjectIdentifier oid)

    - #### getNamedCurveByName

          public static X9ECParameters getNamedCurveByName​(java.lang.String curveName)

    - #### getCurveName

          public static java.lang.String getCurveName​(ASN1ObjectIdentifier oid)

    - #### privateKeyToString

          public static java.lang.String privateKeyToString​(java.lang.String algorithm,
                                                            java.math.BigInteger d,
                                                            ECParameterSpec spec)

    - #### publicKeyToString

          public static java.lang.String publicKeyToString​(java.lang.String algorithm,
                                                           ECPoint q,
                                                           ECParameterSpec spec)

    - #### generateKeyFingerprint

          public static java.lang.String generateKeyFingerprint​(ECPoint publicPoint,
                                                                ECParameterSpec spec)

    - #### getNameFrom

          public static java.lang.String getNameFrom​(java.security.spec.AlgorithmParameterSpec paramSpec)