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Java ECFieldElement.addOne方法代码示例

本文整理汇总了Java中org.bouncycastle.math.ec.ECFieldElement.addOne方法的典型用法代码示例。如果您正苦于以下问题：Java ECFieldElement.addOne方法的具体用法？Java ECFieldElement.addOne怎么用？Java ECFieldElement.addOne使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类org.bouncycastle.math.ec.ECFieldElement的用法示例。


在下文中一共展示了ECFieldElement.addOne方法的15个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。

示例1: twicePlus

import org.bouncycastle.math.ec.ECFieldElement; //导入方法依赖的package包/类
public ECPoint twicePlus(ECPoint b)
{
    if (this.isInfinity())
    {
        return b;
    }
    if (b.isInfinity())
    {
        return twice();
    }

    ECCurve curve = this.getCurve();

    ECFieldElement X1 = this.x;
    if (X1.isZero())
    {
        // A point with X == 0 is it's own additive inverse
        return b;
    }

    ECFieldElement X2 = b.getRawXCoord(), Z2 = b.getZCoord(0);
    if (X2.isZero() || !Z2.isOne())
    {
        return twice().add(b);
    }

    ECFieldElement L1 = this.y, Z1 = this.zs[0];
    ECFieldElement L2 = b.getRawYCoord();

    ECFieldElement X1Sq = X1.square();
    ECFieldElement L1Sq = L1.square();
    ECFieldElement Z1Sq = Z1.square();
    ECFieldElement L1Z1 = L1.multiply(Z1);

    ECFieldElement T = curve.getA().multiply(Z1Sq).add(L1Sq).add(L1Z1);
    ECFieldElement L2plus1 = L2.addOne();
    ECFieldElement A = curve.getA().add(L2plus1).multiply(Z1Sq).add(L1Sq).multiplyPlusProduct(T, X1Sq, Z1Sq);
    ECFieldElement X2Z1Sq = X2.multiply(Z1Sq);
    ECFieldElement B = X2Z1Sq.add(T).square();

    if (B.isZero())
    {
        if (A.isZero())
        {
            return b.twice();
        }

        return curve.getInfinity();
    }

    if (A.isZero())
    {
        return new SecT131R2Point(curve, A, curve.getB().sqrt(), withCompression);
    }

    ECFieldElement X3 = A.square().multiply(X2Z1Sq);
    ECFieldElement Z3 = A.multiply(B).multiply(Z1Sq);
    ECFieldElement L3 = A.add(B).square().multiplyPlusProduct(T, L2plus1, Z3);

    return new SecT131R2Point(curve, X3, L3, new ECFieldElement[]{ Z3 }, this.withCompression);
}
开发者ID:ttt43ttt，项目名称:gwt-crypto，代码行数:62，代码来源:SecT131R2Point.java

示例2: twicePlus

import org.bouncycastle.math.ec.ECFieldElement; //导入方法依赖的package包/类
public ECPoint twicePlus(ECPoint b)
    {
        if (this.isInfinity())
        {
            return b;
        }
        if (b.isInfinity())
        {
            return twice();
        }

        ECCurve curve = this.getCurve();

        ECFieldElement X1 = this.x;
        if (X1.isZero())
        {
            // A point with X == 0 is it's own additive inverse
            return b;
        }

        ECFieldElement X2 = b.getRawXCoord(), Z2 = b.getZCoord(0);
        if (X2.isZero() || !Z2.isOne())
        {
            return twice().add(b);
        }

        ECFieldElement L1 = this.y, Z1 = this.zs[0];
        ECFieldElement L2 = b.getRawYCoord();

        ECFieldElement X1Sq = X1.square();
        ECFieldElement L1Sq = L1.square();
        ECFieldElement Z1Sq = Z1.square();
        ECFieldElement L1Z1 = L1.multiply(Z1);

//        ECFieldElement T = curve.getA().multiply(Z1Sq).add(L1Sq).add(L1Z1);
        ECFieldElement T = Z1Sq.add(L1Sq).add(L1Z1);
        ECFieldElement L2plus1 = L2.addOne();
//        ECFieldElement A = curve.getA().add(L2plus1).multiply(Z1Sq).add(L1Sq).multiplyPlusProduct(T, X1Sq, Z1Sq);
        ECFieldElement A = L2.multiply(Z1Sq).add(L1Sq).multiplyPlusProduct(T, X1Sq, Z1Sq);
        ECFieldElement X2Z1Sq = X2.multiply(Z1Sq);
        ECFieldElement B = X2Z1Sq.add(T).square();

        if (B.isZero())
        {
            if (A.isZero())
            {
                return b.twice();
            }

            return curve.getInfinity();
        }

        if (A.isZero())
        {
            return new SecT283R1Point(curve, A, curve.getB().sqrt(), withCompression);
        }

        ECFieldElement X3 = A.square().multiply(X2Z1Sq);
        ECFieldElement Z3 = A.multiply(B).multiply(Z1Sq);
        ECFieldElement L3 = A.add(B).square().multiplyPlusProduct(T, L2plus1, Z3);

        return new SecT283R1Point(curve, X3, L3, new ECFieldElement[]{ Z3 }, this.withCompression);
    }
开发者ID:thedrummeraki，项目名称:Aki-SSL，代码行数:64，代码来源:SecT283R1Point.java

示例3: twicePlus

import org.bouncycastle.math.ec.ECFieldElement; //导入方法依赖的package包/类
public ECPoint twicePlus(ECPoint b)
{
    if (this.isInfinity())
    {
        return b;
    }
    if (b.isInfinity())
    {
        return twice();
    }

    ECCurve curve = this.getCurve();

    ECFieldElement X1 = this.x;
    if (X1.isZero())
    {
        // A point with X == 0 is it's own additive inverse
        return b;
    }

    ECFieldElement X2 = b.getRawXCoord(), Z2 = b.getZCoord(0);
    if (X2.isZero() || !Z2.isOne())
    {
        return twice().add(b);
    }

    ECFieldElement L1 = this.y, Z1 = this.zs[0];
    ECFieldElement L2 = b.getRawYCoord();

    ECFieldElement X1Sq = X1.square();
    ECFieldElement L1Sq = L1.square();
    ECFieldElement Z1Sq = Z1.square();
    ECFieldElement L1Z1 = L1.multiply(Z1);

    ECFieldElement T = curve.getA().multiply(Z1Sq).add(L1Sq).add(L1Z1);
    ECFieldElement L2plus1 = L2.addOne();
    ECFieldElement A = curve.getA().add(L2plus1).multiply(Z1Sq).add(L1Sq).multiplyPlusProduct(T, X1Sq, Z1Sq);
    ECFieldElement X2Z1Sq = X2.multiply(Z1Sq);
    ECFieldElement B = X2Z1Sq.add(T).square();

    if (B.isZero())
    {
        if (A.isZero())
        {
            return b.twice();
        }

        return curve.getInfinity();
    }

    if (A.isZero())
    {
        return new SecT193R1Point(curve, A, curve.getB().sqrt(), withCompression);
    }

    ECFieldElement X3 = A.square().multiply(X2Z1Sq);
    ECFieldElement Z3 = A.multiply(B).multiply(Z1Sq);
    ECFieldElement L3 = A.add(B).square().multiplyPlusProduct(T, L2plus1, Z3);

    return new SecT193R1Point(curve, X3, L3, new ECFieldElement[]{ Z3 }, this.withCompression);
}
开发者ID:thedrummeraki，项目名称:Aki-SSL，代码行数:62，代码来源:SecT193R1Point.java

示例4: twicePlus

import org.bouncycastle.math.ec.ECFieldElement; //导入方法依赖的package包/类
public ECPoint twicePlus(ECPoint b)
{
    if (this.isInfinity())
    {
        return b;
    }
    if (b.isInfinity())
    {
        return twice();
    }

    ECCurve curve = this.getCurve();

    ECFieldElement X1 = this.x;
    if (X1.isZero())
    {
        // A point with X == 0 is it's own additive inverse
        return b;
    }

    ECFieldElement X2 = b.getRawXCoord(), Z2 = b.getZCoord(0);
    if (X2.isZero() || !Z2.isOne())
    {
        return twice().add(b);
    }

    ECFieldElement L1 = this.y, Z1 = this.zs[0];
    ECFieldElement L2 = b.getRawYCoord();

    ECFieldElement X1Sq = X1.square();
    ECFieldElement L1Sq = L1.square();
    ECFieldElement Z1Sq = Z1.square();
    ECFieldElement L1Z1 = L1.multiply(Z1);

    ECFieldElement T = curve.getA().multiply(Z1Sq).add(L1Sq).add(L1Z1);
    ECFieldElement L2plus1 = L2.addOne();
    ECFieldElement A = curve.getA().add(L2plus1).multiply(Z1Sq).add(L1Sq).multiplyPlusProduct(T, X1Sq, Z1Sq);
    ECFieldElement X2Z1Sq = X2.multiply(Z1Sq);
    ECFieldElement B = X2Z1Sq.add(T).square();

    if (B.isZero())
    {
        if (A.isZero())
        {
            return b.twice();
        }

        return curve.getInfinity();
    }

    if (A.isZero())
    {
        return new SecT113R1Point(curve, A, curve.getB().sqrt(), withCompression);
    }

    ECFieldElement X3 = A.square().multiply(X2Z1Sq);
    ECFieldElement Z3 = A.multiply(B).multiply(Z1Sq);
    ECFieldElement L3 = A.add(B).square().multiplyPlusProduct(T, L2plus1, Z3);

    return new SecT113R1Point(curve, X3, L3, new ECFieldElement[]{ Z3 }, this.withCompression);
}
开发者ID:ttt43ttt，项目名称:gwt-crypto，代码行数:62，代码来源:SecT113R1Point.java

示例5: twicePlus

import org.bouncycastle.math.ec.ECFieldElement; //导入方法依赖的package包/类
public ECPoint twicePlus(ECPoint b)
    {
        if (this.isInfinity())
        {
            return b;
        }
        if (b.isInfinity())
        {
            return twice();
        }

        ECCurve curve = this.getCurve();

        ECFieldElement X1 = this.x;
        if (X1.isZero())
        {
            // A point with X == 0 is it's own additive inverse
            return b;
        }

        // NOTE: twicePlus() only optimized for lambda-affine argument
        ECFieldElement X2 = b.getRawXCoord(), Z2 = b.getZCoord(0);
        if (X2.isZero() || !Z2.isOne())
        {
            return twice().add(b);
        }

        ECFieldElement L1 = this.y, Z1 = this.zs[0];
        ECFieldElement L2 = b.getRawYCoord();

        ECFieldElement X1Sq = X1.square();
        ECFieldElement L1Sq = L1.square();
        ECFieldElement Z1Sq = Z1.square();
        ECFieldElement L1Z1 = L1.multiply(Z1);

//        ECFieldElement T = curve.getA().multiply(Z1Sq).add(L1Sq).add(L1Z1);
        ECFieldElement T = L1Sq.add(L1Z1);
        ECFieldElement L2plus1 = L2.addOne();
//        ECFieldElement A = curve.getA().add(L2plus1).multiply(Z1Sq).add(L1Sq).multiplyPlusProduct(T, X1Sq, Z1Sq);
        ECFieldElement A = L2plus1.multiply(Z1Sq).add(L1Sq).multiplyPlusProduct(T, X1Sq, Z1Sq);
        ECFieldElement X2Z1Sq = X2.multiply(Z1Sq);
        ECFieldElement B = X2Z1Sq.add(T).square();

        if (B.isZero())
        {
            if (A.isZero())
            {
                return b.twice();
            }

            return curve.getInfinity();
        }

        if (A.isZero())
        {
//            return new SecT233K1Point(curve, A, curve.getB().sqrt(), withCompression);
            return new SecT233K1Point(curve, A, curve.getB(), withCompression);
        }

        ECFieldElement X3 = A.square().multiply(X2Z1Sq);
        ECFieldElement Z3 = A.multiply(B).multiply(Z1Sq);
        ECFieldElement L3 = A.add(B).square().multiplyPlusProduct(T, L2plus1, Z3);

        return new SecT233K1Point(curve, X3, L3, new ECFieldElement[]{ Z3 }, this.withCompression);
    }
开发者ID:ttt43ttt，项目名称:gwt-crypto，代码行数:66，代码来源:SecT233K1Point.java

示例6: twicePlus

import org.bouncycastle.math.ec.ECFieldElement; //导入方法依赖的package包/类
public ECPoint twicePlus(ECPoint b)
    {
        if (this.isInfinity())
        {
            return b;
        }
        if (b.isInfinity())
        {
            return twice();
        }

        ECCurve curve = this.getCurve();

        ECFieldElement X1 = this.x;
        if (X1.isZero())
        {
            // A point with X == 0 is it's own additive inverse
            return b;
        }

        // NOTE: twicePlus() only optimized for lambda-affine argument
        ECFieldElement X2 = b.getRawXCoord(), Z2 = b.getZCoord(0);
        if (X2.isZero() || !Z2.isOne())
        {
            return twice().add(b);
        }

        ECFieldElement L1 = this.y, Z1 = this.zs[0];
        ECFieldElement L2 = b.getRawYCoord();

        ECFieldElement X1Sq = X1.square();
        ECFieldElement L1Sq = L1.square();
        ECFieldElement Z1Sq = Z1.square();
        ECFieldElement L1Z1 = L1.multiply(Z1);

//        ECFieldElement T = curve.getA().multiply(Z1Sq).add(L1Sq).add(L1Z1);
        ECFieldElement T = Z1Sq.add(L1Sq).add(L1Z1);
        ECFieldElement L2plus1 = L2.addOne();
//        ECFieldElement A = curve.getA().add(L2plus1).multiply(Z1Sq).add(L1Sq).multiplyPlusProduct(T, X1Sq, Z1Sq);
        ECFieldElement A = L2.multiply(Z1Sq).add(L1Sq).multiplyPlusProduct(T, X1Sq, Z1Sq);
        ECFieldElement X2Z1Sq = X2.multiply(Z1Sq);
        ECFieldElement B = X2Z1Sq.add(T).square();

        if (B.isZero())
        {
            if (A.isZero())
            {
                return b.twice();
            }

            return curve.getInfinity();
        }

        if (A.isZero())
        {
//            return new SecT163K1Point(curve, A, curve.getB().sqrt(), withCompression);
            return new SecT163K1Point(curve, A, curve.getB(), withCompression);
        }

        ECFieldElement X3 = A.square().multiply(X2Z1Sq);
        ECFieldElement Z3 = A.multiply(B).multiply(Z1Sq);
        ECFieldElement L3 = A.add(B).square().multiplyPlusProduct(T, L2plus1, Z3);

        return new SecT163K1Point(curve, X3, L3, new ECFieldElement[]{ Z3 }, this.withCompression);
    }
开发者ID:ttt43ttt，项目名称:gwt-crypto，代码行数:66，代码来源:SecT163K1Point.java

示例7: twicePlus

import org.bouncycastle.math.ec.ECFieldElement; //导入方法依赖的package包/类
public ECPoint twicePlus(ECPoint b)
    {
        if (this.isInfinity())
        {
            return b;
        }
        if (b.isInfinity())
        {
            return twice();
        }

        ECCurve curve = this.getCurve();

        ECFieldElement X1 = this.x;
        if (X1.isZero())
        {
            // A point with X == 0 is it's own additive inverse
            return b;
        }

        ECFieldElement X2 = b.getRawXCoord(), Z2 = b.getZCoord(0);
        if (X2.isZero() || !Z2.isOne())
        {
            return twice().add(b);
        }

        ECFieldElement L1 = this.y, Z1 = this.zs[0];
        ECFieldElement L2 = b.getRawYCoord();

        ECFieldElement X1Sq = X1.square();
        ECFieldElement L1Sq = L1.square();
        ECFieldElement Z1Sq = Z1.square();
        ECFieldElement L1Z1 = L1.multiply(Z1);

//        ECFieldElement T = curve.getA().multiply(Z1Sq).add(L1Sq).add(L1Z1);
        ECFieldElement T = Z1Sq.add(L1Sq).add(L1Z1);
        ECFieldElement L2plus1 = L2.addOne();
//        ECFieldElement A = curve.getA().add(L2plus1).multiply(Z1Sq).add(L1Sq).multiplyPlusProduct(T, X1Sq, Z1Sq);
        ECFieldElement A = L2.multiply(Z1Sq).add(L1Sq).multiplyPlusProduct(T, X1Sq, Z1Sq);
        ECFieldElement X2Z1Sq = X2.multiply(Z1Sq);
        ECFieldElement B = X2Z1Sq.add(T).square();

        if (B.isZero())
        {
            if (A.isZero())
            {
                return b.twice();
            }

            return curve.getInfinity();
        }

        if (A.isZero())
        {
            return new SecT233R1Point(curve, A, curve.getB().sqrt(), withCompression);
        }

        ECFieldElement X3 = A.square().multiply(X2Z1Sq);
        ECFieldElement Z3 = A.multiply(B).multiply(Z1Sq);
        ECFieldElement L3 = A.add(B).square().multiplyPlusProduct(T, L2plus1, Z3);

        return new SecT233R1Point(curve, X3, L3, new ECFieldElement[]{ Z3 }, this.withCompression);
    }
开发者ID:ttt43ttt，项目名称:gwt-crypto，代码行数:64，代码来源:SecT233R1Point.java

示例8: twicePlus

import org.bouncycastle.math.ec.ECFieldElement; //导入方法依赖的package包/类
public ECPoint twicePlus(ECPoint b)
    {
        if (this.isInfinity())
        {
            return b;
        }
        if (b.isInfinity())
        {
            return twice();
        }

        ECCurve curve = this.getCurve();

        ECFieldElement X1 = this.x;
        if (X1.isZero())
        {
            // A point with X == 0 is it's own additive inverse
            return b;
        }

        // NOTE: twicePlus() only optimized for lambda-affine argument
        ECFieldElement X2 = b.getRawXCoord(), Z2 = b.getZCoord(0);
        if (X2.isZero() || !Z2.isOne())
        {
            return twice().add(b);
        }

        ECFieldElement L1 = this.y, Z1 = this.zs[0];
        ECFieldElement L2 = b.getRawYCoord();

        ECFieldElement X1Sq = X1.square();
        ECFieldElement L1Sq = L1.square();
        ECFieldElement Z1Sq = Z1.square();
        ECFieldElement L1Z1 = L1.multiply(Z1);

//        ECFieldElement T = curve.getA().multiply(Z1Sq).add(L1Sq).add(L1Z1);
        ECFieldElement T = L1Sq.add(L1Z1);
        ECFieldElement L2plus1 = L2.addOne();
//        ECFieldElement A = curve.getA().add(L2plus1).multiply(Z1Sq).add(L1Sq).multiplyPlusProduct(T, X1Sq, Z1Sq);
        ECFieldElement A = L2plus1.multiply(Z1Sq).add(L1Sq).multiplyPlusProduct(T, X1Sq, Z1Sq);
        ECFieldElement X2Z1Sq = X2.multiply(Z1Sq);
        ECFieldElement B = X2Z1Sq.add(T).square();

        if (B.isZero())
        {
            if (A.isZero())
            {
                return b.twice();
            }

            return curve.getInfinity();
        }

        if (A.isZero())
        {
//            return new SecT571K1Point(curve, A, curve.getB().sqrt(), withCompression);
            return new SecT571K1Point(curve, A, curve.getB(), withCompression);
        }

        ECFieldElement X3 = A.square().multiply(X2Z1Sq);
        ECFieldElement Z3 = A.multiply(B).multiply(Z1Sq);
        ECFieldElement L3 = A.add(B).square().multiplyPlusProduct(T, L2plus1, Z3);

        return new SecT571K1Point(curve, X3, L3, new ECFieldElement[]{ Z3 }, this.withCompression);
    }
开发者ID:ttt43ttt，项目名称:gwt-crypto，代码行数:66，代码来源:SecT571K1Point.java

示例9: twicePlus

import org.bouncycastle.math.ec.ECFieldElement; //导入方法依赖的package包/类
public ECPoint twicePlus(ECPoint b)
{
    if (this.isInfinity())
    {
        return b;
    }
    if (b.isInfinity())
    {
        return twice();
    }

    ECCurve curve = this.getCurve();

    ECFieldElement X1 = this.x;
    if (X1.isZero())
    {
        // A point with X == 0 is it's own additive inverse
        return b;
    }

    ECFieldElement X2 = b.getRawXCoord(), Z2 = b.getZCoord(0);
    if (X2.isZero() || !Z2.isOne())
    {
        return twice().add(b);
    }

    ECFieldElement L1 = this.y, Z1 = this.zs[0];
    ECFieldElement L2 = b.getRawYCoord();

    ECFieldElement X1Sq = X1.square();
    ECFieldElement L1Sq = L1.square();
    ECFieldElement Z1Sq = Z1.square();
    ECFieldElement L1Z1 = L1.multiply(Z1);

    ECFieldElement T = curve.getA().multiply(Z1Sq).add(L1Sq).add(L1Z1);
    ECFieldElement L2plus1 = L2.addOne();
    ECFieldElement A = curve.getA().add(L2plus1).multiply(Z1Sq).add(L1Sq).multiplyPlusProduct(T, X1Sq, Z1Sq);
    ECFieldElement X2Z1Sq = X2.multiply(Z1Sq);
    ECFieldElement B = X2Z1Sq.add(T).square();

    if (B.isZero())
    {
        if (A.isZero())
        {
            return b.twice();
        }

        return curve.getInfinity();
    }

    if (A.isZero())
    {
        return new SecT163R1Point(curve, A, curve.getB().sqrt(), withCompression);
    }

    ECFieldElement X3 = A.square().multiply(X2Z1Sq);
    ECFieldElement Z3 = A.multiply(B).multiply(Z1Sq);
    ECFieldElement L3 = A.add(B).square().multiplyPlusProduct(T, L2plus1, Z3);

    return new SecT163R1Point(curve, X3, L3, new ECFieldElement[]{ Z3 }, this.withCompression);
}
开发者ID:ttt43ttt，项目名称:gwt-crypto，代码行数:62，代码来源:SecT163R1Point.java

示例10: twicePlus

import org.bouncycastle.math.ec.ECFieldElement; //导入方法依赖的package包/类
public ECPoint twicePlus(ECPoint b)
    {
        if (this.isInfinity())
        {
            return b;
        }
        if (b.isInfinity())
        {
            return twice();
        }

        ECCurve curve = this.getCurve();

        ECFieldElement X1 = this.x;
        if (X1.isZero())
        {
            // A point with X == 0 is it's own additive inverse
            return b;
        }

        ECFieldElement X2 = b.getRawXCoord(), Z2 = b.getZCoord(0);
        if (X2.isZero() || !Z2.isOne())
        {
            return twice().add(b);
        }

        ECFieldElement L1 = this.y, Z1 = this.zs[0];
        ECFieldElement L2 = b.getRawYCoord();

        ECFieldElement X1Sq = X1.square();
        ECFieldElement L1Sq = L1.square();
        ECFieldElement Z1Sq = Z1.square();
        ECFieldElement L1Z1 = L1.multiply(Z1);

//        ECFieldElement T = curve.getA().multiply(Z1Sq).add(L1Sq).add(L1Z1);
        ECFieldElement T = Z1Sq.add(L1Sq).add(L1Z1);
        ECFieldElement L2plus1 = L2.addOne();
//        ECFieldElement A = curve.getA().add(L2plus1).multiply(Z1Sq).add(L1Sq).multiplyPlusProduct(T, X1Sq, Z1Sq);
        ECFieldElement A = L2.multiply(Z1Sq).add(L1Sq).multiplyPlusProduct(T, X1Sq, Z1Sq);
        ECFieldElement X2Z1Sq = X2.multiply(Z1Sq);
        ECFieldElement B = X2Z1Sq.add(T).square();

        if (B.isZero())
        {
            if (A.isZero())
            {
                return b.twice();
            }

            return curve.getInfinity();
        }

        if (A.isZero())
        {
            return new SecT409R1Point(curve, A, curve.getB().sqrt(), withCompression);
        }

        ECFieldElement X3 = A.square().multiply(X2Z1Sq);
        ECFieldElement Z3 = A.multiply(B).multiply(Z1Sq);
        ECFieldElement L3 = A.add(B).square().multiplyPlusProduct(T, L2plus1, Z3);

        return new SecT409R1Point(curve, X3, L3, new ECFieldElement[]{ Z3 }, this.withCompression);
    }
开发者ID:thedrummeraki，项目名称:Aki-SSL，代码行数:64，代码来源:SecT409R1Point.java

示例11: twicePlus

import org.bouncycastle.math.ec.ECFieldElement; //导入方法依赖的package包/类
public ECPoint twicePlus(ECPoint b)
    {
        if (this.isInfinity())
        {
            return b;
        }
        if (b.isInfinity())
        {
            return twice();
        }

        ECCurve curve = this.getCurve();

        ECFieldElement X1 = this.x;
        if (X1.isZero())
        {
            // A point with X == 0 is it's own additive inverse
            return b;
        }

        ECFieldElement X2 = b.getRawXCoord(), Z2 = b.getZCoord(0);
        if (X2.isZero() || !Z2.isOne())
        {
            return twice().add(b);
        }

        ECFieldElement L1 = this.y, Z1 = this.zs[0];
        ECFieldElement L2 = b.getRawYCoord();

        ECFieldElement X1Sq = X1.square();
        ECFieldElement L1Sq = L1.square();
        ECFieldElement Z1Sq = Z1.square();
        ECFieldElement L1Z1 = L1.multiply(Z1);

//        ECFieldElement T = curve.getA().multiply(Z1Sq).add(L1Sq).add(L1Z1);
        ECFieldElement T = Z1Sq.add(L1Sq).add(L1Z1);
        ECFieldElement L2plus1 = L2.addOne();
//        ECFieldElement A = curve.getA().add(L2plus1).multiply(Z1Sq).add(L1Sq).multiplyPlusProduct(T, X1Sq, Z1Sq);
        ECFieldElement A = L2.multiply(Z1Sq).add(L1Sq).multiplyPlusProduct(T, X1Sq, Z1Sq);
        ECFieldElement X2Z1Sq = X2.multiply(Z1Sq);
        ECFieldElement B = X2Z1Sq.add(T).square();

        if (B.isZero())
        {
            if (A.isZero())
            {
                return b.twice();
            }

            return curve.getInfinity();
        }

        if (A.isZero())
        {
            return new SecT163R2Point(curve, A, curve.getB().sqrt(), withCompression);
        }

        ECFieldElement X3 = A.square().multiply(X2Z1Sq);
        ECFieldElement Z3 = A.multiply(B).multiply(Z1Sq);
        ECFieldElement L3 = A.add(B).square().multiplyPlusProduct(T, L2plus1, Z3);

        return new SecT163R2Point(curve, X3, L3, new ECFieldElement[]{ Z3 }, this.withCompression);
    }
开发者ID:thedrummeraki，项目名称:Aki-SSL，代码行数:64，代码来源:SecT163R2Point.java

示例12: twicePlus

import org.bouncycastle.math.ec.ECFieldElement; //导入方法依赖的package包/类
public ECPoint twicePlus(ECPoint b)
    {
        if (this.isInfinity())
        {
            return b;
        }
        if (b.isInfinity())
        {
            return twice();
        }

        ECCurve curve = this.getCurve();

        ECFieldElement X1 = this.x;
        if (X1.isZero())
        {
            // A point with X == 0 is it's own additive inverse
            return b;
        }

        // NOTE: twicePlus() only optimized for lambda-affine argument
        ECFieldElement X2 = b.getRawXCoord(), Z2 = b.getZCoord(0);
        if (X2.isZero() || !Z2.isOne())
        {
            return twice().add(b);
        }

        ECFieldElement L1 = this.y, Z1 = this.zs[0];
        ECFieldElement L2 = b.getRawYCoord();

        ECFieldElement X1Sq = X1.square();
        ECFieldElement L1Sq = L1.square();
        ECFieldElement Z1Sq = Z1.square();
        ECFieldElement L1Z1 = L1.multiply(Z1);

//        ECFieldElement T = curve.getA().multiply(Z1Sq).add(L1Sq).add(L1Z1);
        ECFieldElement T = L1Sq.add(L1Z1);
        ECFieldElement L2plus1 = L2.addOne();
//        ECFieldElement A = curve.getA().add(L2plus1).multiply(Z1Sq).add(L1Sq).multiplyPlusProduct(T, X1Sq, Z1Sq);
        ECFieldElement A = L2plus1.multiply(Z1Sq).add(L1Sq).multiplyPlusProduct(T, X1Sq, Z1Sq);
        ECFieldElement X2Z1Sq = X2.multiply(Z1Sq);
        ECFieldElement B = X2Z1Sq.add(T).square();

        if (B.isZero())
        {
            if (A.isZero())
            {
                return b.twice();
            }

            return curve.getInfinity();
        }

        if (A.isZero())
        {
//            return new SecT239K1Point(curve, A, curve.getB().sqrt(), withCompression);
            return new SecT239K1Point(curve, A, curve.getB(), withCompression);
        }

        ECFieldElement X3 = A.square().multiply(X2Z1Sq);
        ECFieldElement Z3 = A.multiply(B).multiply(Z1Sq);
        ECFieldElement L3 = A.add(B).square().multiplyPlusProduct(T, L2plus1, Z3);

        return new SecT239K1Point(curve, X3, L3, new ECFieldElement[]{ Z3 }, this.withCompression);
    }
开发者ID:ttt43ttt，项目名称:gwt-crypto，代码行数:66，代码来源:SecT239K1Point.java

示例13: decodePoint

import org.bouncycastle.math.ec.ECFieldElement; //导入方法依赖的package包/类
public static ECPoint decodePoint(ECCurve curve, byte[] bytes)
{
    /*byte[] bp_enc=new byte[bytes.length+1];
      if (0==(bytes[bytes.length-1]&0x1))
          bp_enc[0]=0x02;
      else
          bp_enc[0]=0x03;
      System.arraycopy(bytes, 0, bp_enc, 1, bytes.length);
      if (!trace(curve.fromBigInteger(new BigInteger(1, bytes))).equals(curve.getA().toBigInteger()))
          bp_enc[bp_enc.length-1]^=0x01;

      return curve.decodePoint(bp_enc);*/

    ECFieldElement k = curve.fromBigInteger(BigInteger.valueOf(bytes[bytes.length - 1] & 0x1));

    ECFieldElement xp = curve.fromBigInteger(new BigInteger(1, bytes));
    if (!trace(xp).equals(curve.getA()))
    {
        xp = xp.addOne();
    }

    ECFieldElement yp = null;
    if (xp.isZero())
    {
        yp = curve.getB().sqrt();
    }
    else
    {
        ECFieldElement beta = xp.square().invert().multiply(curve.getB()).add(curve.getA()).add(xp);
        ECFieldElement z = solveQuadraticEquation(curve, beta);
        if (z != null)
        {
            if (!trace(z).equals(k))
            {
                z = z.addOne();
            }
            yp = xp.multiply(z);
        }
    }

    if (yp == null)
    {
        throw new IllegalArgumentException("Invalid point compression");
    }

    return curve.createPoint(xp.toBigInteger(), yp.toBigInteger());
}
开发者ID:thedrummeraki，项目名称:Aki-SSL，代码行数:48，代码来源:DSTU4145PointEncoder.java

示例14: twicePlus

import org.bouncycastle.math.ec.ECFieldElement; //导入方法依赖的package包/类
public ECPoint twicePlus(ECPoint b)
    {
        if (this.isInfinity())
        {
            return b;
        }
        if (b.isInfinity())
        {
            return twice();
        }

        ECCurve curve = this.getCurve();

        ECFieldElement X1 = this.x;
        if (X1.isZero())
        {
            // A point with X == 0 is it's own additive inverse
            return b;
        }

        // NOTE: twicePlus() only optimized for lambda-affine argument
        ECFieldElement X2 = b.getRawXCoord(), Z2 = b.getZCoord(0);
        if (X2.isZero() || !Z2.isOne())
        {
            return twice().add(b);
        }

        ECFieldElement L1 = this.y, Z1 = this.zs[0];
        ECFieldElement L2 = b.getRawYCoord();

        ECFieldElement X1Sq = X1.square();
        ECFieldElement L1Sq = L1.square();
        ECFieldElement Z1Sq = Z1.square();
        ECFieldElement L1Z1 = L1.multiply(Z1);

//        ECFieldElement T = curve.getA().multiply(Z1Sq).add(L1Sq).add(L1Z1);
        ECFieldElement T = L1Sq.add(L1Z1);
        ECFieldElement L2plus1 = L2.addOne();
//        ECFieldElement A = curve.getA().add(L2plus1).multiply(Z1Sq).add(L1Sq).multiplyPlusProduct(T, X1Sq, Z1Sq);
        ECFieldElement A = L2plus1.multiply(Z1Sq).add(L1Sq).multiplyPlusProduct(T, X1Sq, Z1Sq);
        ECFieldElement X2Z1Sq = X2.multiply(Z1Sq);
        ECFieldElement B = X2Z1Sq.add(T).square();

        if (B.isZero())
        {
            if (A.isZero())
            {
                return b.twice();
            }

            return curve.getInfinity();
        }

        if (A.isZero())
        {
//            return new SecT409K1Point(curve, A, curve.getB().sqrt(), withCompression);
            return new SecT409K1Point(curve, A, curve.getB(), withCompression);
        }

        ECFieldElement X3 = A.square().multiply(X2Z1Sq);
        ECFieldElement Z3 = A.multiply(B).multiply(Z1Sq);
        ECFieldElement L3 = A.add(B).square().multiplyPlusProduct(T, L2plus1, Z3);

        return new SecT409K1Point(curve, X3, L3, new ECFieldElement[]{ Z3 }, this.withCompression);
    }
开发者ID:ttt43ttt，项目名称:gwt-crypto，代码行数:66，代码来源:SecT409K1Point.java

示例15: twicePlus

import org.bouncycastle.math.ec.ECFieldElement; //导入方法依赖的package包/类
public ECPoint twicePlus(ECPoint b)
{
    if (this.isInfinity())
    {
        return b;
    }
    if (b.isInfinity())
    {
        return twice();
    }

    ECCurve curve = this.getCurve();

    ECFieldElement X1 = this.x;
    if (X1.isZero())
    {
        // A point with X == 0 is it's own additive inverse
        return b;
    }

    ECFieldElement X2 = b.getRawXCoord(), Z2 = b.getZCoord(0);
    if (X2.isZero() || !Z2.isOne())
    {
        return twice().add(b);
    }

    ECFieldElement L1 = this.y, Z1 = this.zs[0];
    ECFieldElement L2 = b.getRawYCoord();

    ECFieldElement X1Sq = X1.square();
    ECFieldElement L1Sq = L1.square();
    ECFieldElement Z1Sq = Z1.square();
    ECFieldElement L1Z1 = L1.multiply(Z1);

    ECFieldElement T = curve.getA().multiply(Z1Sq).add(L1Sq).add(L1Z1);
    ECFieldElement L2plus1 = L2.addOne();
    ECFieldElement A = curve.getA().add(L2plus1).multiply(Z1Sq).add(L1Sq).multiplyPlusProduct(T, X1Sq, Z1Sq);
    ECFieldElement X2Z1Sq = X2.multiply(Z1Sq);
    ECFieldElement B = X2Z1Sq.add(T).square();

    if (B.isZero())
    {
        if (A.isZero())
        {
            return b.twice();
        }

        return curve.getInfinity();
    }

    if (A.isZero())
    {
        return new SecT193R2Point(curve, A, curve.getB().sqrt(), withCompression);
    }

    ECFieldElement X3 = A.square().multiply(X2Z1Sq);
    ECFieldElement Z3 = A.multiply(B).multiply(Z1Sq);
    ECFieldElement L3 = A.add(B).square().multiplyPlusProduct(T, L2plus1, Z3);

    return new SecT193R2Point(curve, X3, L3, new ECFieldElement[]{ Z3 }, this.withCompression);
}
开发者ID:thedrummeraki，项目名称:Aki-SSL，代码行数:62，代码来源:SecT193R2Point.java


注：本文中的org.bouncycastle.math.ec.ECFieldElement.addOne方法示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。