Java Security, 2nd Edition

Name

Class javax.crypto.Mac

Synopsis

This is a secure message digest, otherwise known as a Message Authentication Code. This class uses a secret key to perform additional calculations on a message digest (resulting in a MAC), making it impossible to change the original data without the secret key.

Class Definition

public class javax.crypto.Mac
    extends java.lang.Object
    implements java.lang.Cloneable {

    // Constructors
    protected Mac(MacSpi, Provider, String);

    // Class Methods
    public static final Mac getInstance(String, String);
    public static final Mac getInstance(String);

    // Instance Methods
    public final Object clone(  );
    public final byte[] doFinal(byte[]);
    public final byte[] doFinal(  );
    public final void doFinal(byte[], int);
    public final String getAlgorithm(  );
    public final int getMacLength(  );
    public final Provider getProvider(  );
    public final void init(Key, AlgorithmParameterSpec);
    public final void init(Key);
    public final void reset(  );
    public final void update(byte);
    public final void update(byte[], int, int);
    public final void update(byte[]);
}

See also

java.security.MessageDigest