| Package | Description | 
|---|---|
| java.security | Provides the classes and interfaces for the security framework. | 
| java.security.interfaces | Provides interfaces for generating RSA (Rivest, Shamir and
 Adleman AsymmetricCipher algorithm)
 keys as defined in the RSA Laboratory Technical Note
 PKCS#1, and DSA (Digital Signature
 Algorithm) keys as defined in NIST's FIPS-186. | 
| javax.crypto.interfaces | Provides interfaces for Diffie-Hellman keys as defined in
RSA Laboratories' PKCS #3. | 
| javax.net.ssl | Provides classes for the secure socket package. | 
| javax.security.auth.x500 | This package contains the classes that should be used to store
 X500 Principal and X500 Private Credentials in a
 Subject. | 
| 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). | 
| PrivateKey | KeyFactory. generatePrivate(KeySpec keySpec)Generates a private key object from the provided key specification
 (key material). | 
| PrivateKey | KeyPair. getPrivate()Returns a reference to the private key component of this key pair. | 
| PrivateKey | Signer. getPrivateKey()Deprecated.  Returns this signer's private key. | 
| PrivateKey | KeyStore.PrivateKeyEntry. getPrivateKey()Gets the  PrivateKeyfrom this entry. | 
| Modifier and Type | Method and Description | 
|---|---|
| protected abstract void | SignatureSpi. engineInitSign(PrivateKey privateKey)Initializes this signature object with the specified
 private key for signing operations. | 
| protected void | SignatureSpi. engineInitSign(PrivateKey privateKey,
              SecureRandom random)Initializes this signature object with the specified
 private key and source of randomness for signing operations. | 
| void | Signature. initSign(PrivateKey privateKey)Initialize this object for signing. | 
| void | Signature. initSign(PrivateKey privateKey,
        SecureRandom random)Initialize this object for signing. | 
| Constructor and Description | 
|---|
| KeyPair(PublicKey publicKey,
       PrivateKey privateKey)Constructs a key pair from the given public key and private key. | 
| PrivateKeyEntry(PrivateKey privateKey,
               Certificate[] chain)Constructs a  PrivateKeyEntrywith aPrivateKeyand corresponding certificate chain. | 
| PrivateKeyEntry(PrivateKey privateKey,
               Certificate[] chain,
               Set<KeyStore.Entry.Attribute> attributes)Constructs a  PrivateKeyEntrywith aPrivateKeyand
 corresponding certificate chain and associated entry attributes. | 
| SignedObject(Serializable object,
            PrivateKey signingKey,
            Signature signingEngine)Constructs a SignedObject from any Serializable object. | 
| Modifier and Type | Interface and Description | 
|---|---|
| interface  | DSAPrivateKeyThe standard interface to a DSA private key. | 
| interface  | ECPrivateKeyThe interface to an elliptic curve (EC) private key. | 
| interface  | RSAMultiPrimePrivateCrtKeyThe interface to an RSA multi-prime private key, as defined in the
 PKCS#1 v2.1, using the Chinese Remainder Theorem
 (CRT) information values. | 
| interface  | RSAPrivateCrtKeyThe interface to an RSA private key, as defined in the PKCS#1 standard,
 using the Chinese Remainder Theorem (CRT) information values. | 
| interface  | RSAPrivateKeyThe interface to an RSA private key. | 
| Modifier and Type | Interface and Description | 
|---|---|
| interface  | DHPrivateKeyThe interface to a Diffie-Hellman private key. | 
| Modifier and Type | Method and Description | 
|---|---|
| PrivateKey | X509KeyManager. getPrivateKey(String alias)Returns the key associated with the given alias. | 
| Modifier and Type | Method and Description | 
|---|---|
| PrivateKey | X500PrivateCredential. getPrivateKey()Returns the PrivateKey. | 
| Constructor and Description | 
|---|
| X500PrivateCredential(X509Certificate cert,
                     PrivateKey key)Creates an X500PrivateCredential that associates an X.509 certificate,
 a private key and the KeyStore alias. | 
| X500PrivateCredential(X509Certificate cert,
                     PrivateKey key,
                     String alias)Creates an X500PrivateCredential that associates an X.509 certificate,
 a private key and the KeyStore alias. | 
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For further API reference and developer documentation, see Java SE Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.
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