AlgorithmParameters

AlgorithmParameters

java.security

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Java 1.2

This class is a generic, opaque representation of the parameters used by some cryptographic algorithm. You can create an instance of the class with one of the static getInstance( ) factory methods , specifying the desired algorithm and, optionally , the desired provider. The default "SUN" provider supports the "DSA" algorithm. The "SunJCE" provider shipped with the JCE supports "DES", "DESede", "PBE", "Blowfish", and "DiffieHellman". Once you have obtained an AlgorithmParameters object, initialize it by passing an algorithm-specific java.security.spec.AlgorithmParameterSpec object or the encoded parameter values as a byte array to the init( ) method. You can also create an AlgorithmParameters object with an AlgorithmParameterGenerator . getEncoded( ) returns the initialized algorithm parameters as a byte array, using either the algorithm-specific default encoding or the named encoding format you specified.

 public class  AlgorithmParameters  {  // Protected Constructors  protected  AlgorithmParameters  (AlgorithmParametersSpi  paramSpi  , Provider  provider  , String  algorithm  );  // Public Class Methods  public static AlgorithmParameters  getInstance  (String  algorithm  )  throws NoSuchAlgorithmException;        public static AlgorithmParameters  getInstance  (String  algorithm  ,  String  provider  ) throws NoSuchAlgorithmException, NoSuchProviderException;  1.4  public static AlgorithmParameters  getInstance  (String  algorithm  , Provider  provider  )  throws NoSuchAlgorithmException;  // Public Instance Methods  public final String  getAlgorithm  ( );        public final byte[ ]  getEncoded  ( ) throws java.io.IOException;        public final byte[ ]  getEncoded  (String  format  ) throws java.io.IOException;        public final <T extends java.security.spec.AlgorithmParameterSpec>  T  getParameterSpec  (Class<T>  paramSpec  ) throws java.security.spec. InvalidParameterSpecException;        public final Provider  getProvider  ( );        public final void  init  (java.security.spec.AlgorithmParameterSpec  paramSpec  )  throws java.security.spec.InvalidParameterSpecException;        public final void  init  (byte[ ]  params  ) throws java.io.IOException;        public final void  init  (byte[ ]  params  , String  format  )  throws java.io.IOException;  // Public Methods Overriding Object  public final String  toString  ( );   } 

Passed To

javax.crypto.Cipher.init( ) , javax.crypto.CipherSpi.engineInit( ) , javax.crypto.EncryptedPrivateKeyInfo.EncryptedPrivateKeyInfo( ) , javax.crypto.ExemptionMechanism.init( ) , javax.crypto.ExemptionMechanismSpi.engineInit( )

Returned By

AlgorithmParameterGenerator.generateParameters( ) , AlgorithmParameterGeneratorSpi.engineGenerateParameters( ) , Signature.getParameters( ) , SignatureSpi.engineGetParameters( ) , javax.crypto.Cipher.getParameters( ) , javax.crypto.CipherSpi.engineGetParameters( ) , javax.crypto.EncryptedPrivateKeyInfo.getAlgParameters( )