| package org.bouncycastle.math.ec; |
| |
| /** |
| * Class holding precomputation data for the WNAF (Window Non-Adjacent Form) |
| * algorithm. |
| */ |
| public class WNafPreCompInfo implements PreCompInfo |
| { |
| /** |
| * Array holding the precomputed <code>ECPoint</code>s used for a Window |
| * NAF multiplication. |
| */ |
| private ECPoint[] preComp = null; |
| |
| /** |
| * Array holding the negations of the precomputed <code>ECPoint</code>s used |
| * for a Window NAF multiplication. |
| */ |
| private ECPoint[] preCompNeg = null; |
| |
| /** |
| * Holds an <code>ECPoint</code> representing twice(this). Used for the |
| * Window NAF multiplication to create or extend the precomputed values. |
| */ |
| private ECPoint twiceP = null; |
| |
| protected ECPoint[] getPreComp() |
| { |
| return preComp; |
| } |
| |
| protected ECPoint[] getPreCompNeg() |
| { |
| return preCompNeg; |
| } |
| |
| protected void setPreComp(ECPoint[] preComp) |
| { |
| this.preComp = preComp; |
| } |
| |
| protected void setPreCompNeg(ECPoint[] preCompNeg) |
| { |
| this.preCompNeg = preCompNeg; |
| } |
| |
| protected ECPoint getTwiceP() |
| { |
| return twiceP; |
| } |
| |
| protected void setTwiceP(ECPoint twiceP) |
| { |
| this.twiceP = twiceP; |
| } |
| } |