WNafPreCompInfo.java revision 5db505e1f6a68c8d5dfdb0fed0b8607dea7bed96 
1package org.bouncycastle.math.ec;
2
3/**
4 * Class holding precomputation data for the WNAF (Window Non-Adjacent Form)
5 * algorithm.
6 */
7public class WNafPreCompInfo implements PreCompInfo
8{
9    /**
10     * Array holding the precomputed <code>ECPoint</code>s used for a Window
11     * NAF multiplication.
12     */
13    private ECPoint[] preComp = null;
14
15    /**
16     * Array holding the negations of the precomputed <code>ECPoint</code>s used
17     * for a Window NAF multiplication.
18     */
19    private ECPoint[] preCompNeg = null;
20
21    /**
22     * Holds an <code>ECPoint</code> representing twice(this). Used for the
23     * Window NAF multiplication to create or extend the precomputed values.
24     */
25    private ECPoint twiceP = null;
26
27    protected ECPoint[] getPreComp()
28    {
29        return preComp;
30    }
31
32    protected ECPoint[] getPreCompNeg()
33    {
34        return preCompNeg;
35    }
36
37    protected void setPreComp(ECPoint[] preComp)
38    {
39        this.preComp = preComp;
40    }
41
42    protected void setPreCompNeg(ECPoint[] preCompNeg)
43    {
44        this.preCompNeg = preCompNeg;
45    }
46
47    protected ECPoint getTwiceP()
48    {
49        return twiceP;
50    }
51
52    protected void setTwiceP(ECPoint twiceP)
53    {
54        this.twiceP = twiceP;
55    }
56}
57