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## org.bouncycastle.jce
Class ECKeyUtil

    java.lang.Object
      org.bouncycastle.jce.ECKeyUtil

    public class ECKeyUtil

extends java.lang.Object

Utility class to allow conversion of EC key parameters to explicit from named curves and back (where possible).

Constructor Summary
`ECKeyUtil()`

Method Summary
`static java.security.PrivateKey` | `privateToExplicitParameters(java.security.PrivateKey key, java.security.Provider provider)` Convert a passed in private EC key to have explicit parameters.
`static java.security.PrivateKey` | `privateToExplicitParameters(java.security.PrivateKey key, java.lang.String providerName)` Convert a passed in private EC key to have explicit parameters.
`static java.security.PublicKey` | `publicToExplicitParameters(java.security.PublicKey key, java.security.Provider provider)` Convert a passed in public EC key to have explicit parameters.
`static java.security.PublicKey` | `publicToExplicitParameters(java.security.PublicKey key, java.lang.String providerName)` Convert a passed in public EC key to have explicit parameters.

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

### ECKeyUtil

    public ECKeyUtil()

Method Detail

### publicToExplicitParameters

    public static java.security.PublicKey publicToExplicitParameters(java.security.PublicKey key,
                                                                     java.lang.String providerName)
                                                              throws java.lang.IllegalArgumentException,
                                                                     java.security.NoSuchAlgorithmException,
                                                                     java.security.NoSuchProviderException

  Convert a passed in public EC key to have explicit parameters. If the key is already using explicit parameters it is returned.

  Parameters:
    `key` - key to be converted
    `providerName` - provider name to be used.
  Returns:
    the equivalent key with explicit curve parameters
  Throws:
    `java.lang.IllegalArgumentException`
    `java.security.NoSuchAlgorithmException`
    `java.security.NoSuchProviderException`

### publicToExplicitParameters

    public static java.security.PublicKey publicToExplicitParameters(java.security.PublicKey key,
                                                                     java.security.Provider provider)
                                                              throws java.lang.IllegalArgumentException,
                                                                     java.security.NoSuchAlgorithmException

  Convert a passed in public EC key to have explicit parameters. If the key is already using explicit parameters it is returned.

  Parameters:
    `key` - key to be converted
    `provider` - provider to be used.
  Returns:
    the equivalent key with explicit curve parameters
  Throws:
    `java.lang.IllegalArgumentException`
    `java.security.NoSuchAlgorithmException`

### privateToExplicitParameters

    public static java.security.PrivateKey privateToExplicitParameters(java.security.PrivateKey key,
                                                                       java.lang.String providerName)
                                                                throws java.lang.IllegalArgumentException,
                                                                       java.security.NoSuchAlgorithmException,
                                                                       java.security.NoSuchProviderException

  Convert a passed in private EC key to have explicit parameters. If the key is already using explicit parameters it is returned.

  Parameters:
    `key` - key to be converted
    `providerName` - provider name to be used.
  Returns:
    the equivalent key with explicit curve parameters
  Throws:
    `java.lang.IllegalArgumentException`
    `java.security.NoSuchAlgorithmException`
    `java.security.NoSuchProviderException`

### privateToExplicitParameters

    public static java.security.PrivateKey privateToExplicitParameters(java.security.PrivateKey key,
                                                                       java.security.Provider provider)
                                                                throws java.lang.IllegalArgumentException,
                                                                       java.security.NoSuchAlgorithmException

  Convert a passed in private EC key to have explicit parameters. If the key is already using explicit parameters it is returned.

  Parameters:
    `key` - key to be converted
    `provider` - provider to be used.
  Returns:
    the equivalent key with explicit curve parameters
  Throws:
    `java.lang.IllegalArgumentException`
    `java.security.NoSuchAlgorithmException`

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