| Package | Description | 
|---|---|
| java.security | Provides the classes and interfaces for the security framework. | 
| javax.crypto | Provides the classes and interfaces for cryptographic operations. | 
| Modifier and Type | Method and Description | 
|---|---|
| protected abstract PrivateKey | KeyFactorySpi. engineGeneratePrivate(KeySpec keySpec)Generates a private key object from the provided key
 specification (key material). | 
| protected abstract PublicKey | KeyFactorySpi. engineGeneratePublic(KeySpec keySpec)Generates a public key object from the provided key
 specification (key material). | 
| protected abstract <T extends KeySpec> | KeyFactorySpi. engineGetKeySpec(Key key,
                Class<T> keySpec)Returns a specification (key material) of the given key
 object. | 
| PrivateKey | KeyFactory. generatePrivate(KeySpec keySpec)Generates a private key object from the provided key specification
 (key material). | 
| PublicKey | KeyFactory. generatePublic(KeySpec keySpec)Generates a public key object from the provided key specification
 (key material). | 
| <T extends KeySpec> | KeyFactory. getKeySpec(Key key,
          Class<T> keySpec)Returns a specification (key material) of the given key object. | 
| Modifier and Type | Method and Description | 
|---|---|
| protected abstract SecretKey | SecretKeyFactorySpi. engineGenerateSecret(KeySpec keySpec)Generates a  SecretKeyobject from the
 provided key specification (key material). | 
| protected abstract KeySpec | SecretKeyFactorySpi. engineGetKeySpec(SecretKey key,
                Class<?> keySpec)Returns a specification (key material) of the given key
 object in the requested format. | 
| SecretKey | SecretKeyFactory. generateSecret(KeySpec keySpec)Generates a  SecretKeyobject from the provided key
 specification (key material). | 
| PKCS8EncodedKeySpec | EncryptedPrivateKeyInfo. getKeySpec(Cipher cipher)Extract the enclosed PKCS8EncodedKeySpec object from the
 encrypted data and return it. | 
| KeySpec | SecretKeyFactory. getKeySpec(SecretKey key,
          Class<?> keySpec)Returns a specification (key material) of the given key object
 in the requested format. | 
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