The java.security.spec package contains classes that define transparent representations for DSA, RSA, and EC public and private keys and for X.509 and PKCS#8 encodings of those keys. It also defines a transparent representation for DSA algorithm parameters. The classes in this package are used in conjunction with java.security.KeyFactory and java.security.AlgorithmParameters for converting opaque Key and AlgorithmParameters objects to and from transparent representations.

This package is not frequently used. To make use of it, you must be somewhat familiar with the mathematics that underlies DSA and RSA public-key encryption and the encoding standards that specify how keys are encoded as byte streams.

Interfaces

public interface AlgorithmParameterSpec;
public interface ECField;
public interface KeySpec;

Classes

public class DSAParameterSpec implements AlgorithmParameterSpec, 
        java.security.interfaces.DSAParams;
public class DSAPrivateKeySpec implements KeySpec;
public class DSAPublicKeySpec implements KeySpec;
public class ECFieldF2m implements ECField;
public class ECFieldFp implements ECField;
public class ECGenParameterSpec implements AlgorithmParameterSpec;
public class ECParameterSpec implements AlgorithmParameterSpec;
public class ECPoint;
public class ECPrivateKeySpec implements KeySpec;
public class ECPublicKeySpec implements KeySpec;
public class EllipticCurve;
public abstract class EncodedKeySpec implements KeySpec;
   public class PKCS8EncodedKeySpec extends EncodedKeySpec;
   public class X509EncodedKeySpec extends EncodedKeySpec;
public class MGF1ParameterSpec implements AlgorithmParameterSpec;
public class PSSParameterSpec implements AlgorithmParameterSpec;
public class RSAKeyGenParameterSpec implements AlgorithmParameterSpec;
public class RSAOtherPrimeInfo;
public class RSAPrivateKeySpec implements KeySpec;
   public class RSAMultiPrimePrivateCrtKeySpec extends RSAPrivateKeySpec;
   public class RSAPrivateCrtKeySpec extends RSAPrivateKeySpec;
public class RSAPublicKeySpec implements KeySpec;

Exceptions

public class InvalidKeySpecException 
        extends java.security.GeneralSecurityException;
public class InvalidParameterSpecException 
        extends java.security.GeneralSecurityException;