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25 
26 package javax.crypto.spec;
27 
28 import java.math.BigInteger;
29 import java.security.spec.AlgorithmParameterSpec;
30 
31 /**
32  * This class specifies the set of parameters used with password-based
33  * encryption (PBE), as defined in the
34  * <a href="http://www.ietf.org/rfc/rfc2898.txt">PKCS #5</a>
35  * standard.
36  *
37  * @author Jan Luehe
38  *
39  * @since 1.4
40  */
41 public class PBEParameterSpec implements AlgorithmParameterSpec {
42 
43     private byte[] salt;
44     private int iterationCount;
45 
46     /**
47      * Constructs a parameter set for password-based encryption as defined in
48      * the PKCS #5 standard.
49      *
50      * @param salt the salt. The contents of <code>salt</code> are copied
51      * to protect against subsequent modification.
52      * @param iterationCount the iteration count.
53      * @exception NullPointerException if <code>salt</code> is null.
54      */
PBEParameterSpec(byte[] salt, int iterationCount)55     public PBEParameterSpec(byte[] salt, int iterationCount) {
56         this.salt = (byte[])salt.clone();
57         this.iterationCount = iterationCount;
58     }
59 
60     /**
61      * Returns the salt.
62      *
63      * @return the salt. Returns a new array
64      * each time this method is called.
65      */
getSalt()66     public byte[] getSalt() {
67         return (byte[])this.salt.clone();
68     }
69 
70     /**
71      * Returns the iteration count.
72      *
73      * @return the iteration count
74      */
getIterationCount()75     public int getIterationCount() {
76         return this.iterationCount;
77     }
78 }
79