public ECFieldElement fromBigInteger(BigInteger x) { return new SecP160R2FieldElement(x); }
public ECFieldElement fromBigInteger(BigInteger x) { return new SecP160R2FieldElement(x); }
public ECFieldElement addOne() { int[] z = Nat160.create(); SecP160R2Field.addOne(x, z); return new SecP160R2FieldElement(z); }
public ECPoint lookup(int index) { int[] x = Nat160.create(), y = Nat160.create(); int pos = 0; for (int i = 0; i < len; ++i) { int MASK = ((i ^ index) - 1) >> 31; for (int j = 0; j < FE_INTS; ++j) { x[j] ^= table[pos + j] & MASK; y[j] ^= table[pos + FE_INTS + j] & MASK; } pos += (FE_INTS * 2); } return createRawPoint(new SecP160R2FieldElement(x), new SecP160R2FieldElement(y), false); } };
public ECFieldElement subtract(ECFieldElement b) { int[] z = Nat160.create(); SecP160R2Field.subtract(x, ((SecP160R2FieldElement)b).x, z); return new SecP160R2FieldElement(z); }
public ECPoint lookup(int index) { int[] x = Nat160.create(), y = Nat160.create(); int pos = 0; for (int i = 0; i < len; ++i) { int MASK = ((i ^ index) - 1) >> 31; for (int j = 0; j < FE_INTS; ++j) { x[j] ^= table[pos + j] & MASK; y[j] ^= table[pos + FE_INTS + j] & MASK; } pos += (FE_INTS * 2); } return createRawPoint(new SecP160R2FieldElement(x), new SecP160R2FieldElement(y), false); } };
public ECFieldElement square() { int[] z = Nat160.create(); SecP160R2Field.square(x, z); return new SecP160R2FieldElement(z); }
public ECFieldElement add(ECFieldElement b) { int[] z = Nat160.create(); SecP160R2Field.add(x, ((SecP160R2FieldElement)b).x, z); return new SecP160R2FieldElement(z); }
public ECFieldElement multiply(ECFieldElement b) { int[] z = Nat160.create(); SecP160R2Field.multiply(x, ((SecP160R2FieldElement)b).x, z); return new SecP160R2FieldElement(z); }
public ECFieldElement negate() { int[] z = Nat160.create(); SecP160R2Field.negate(x, z); return new SecP160R2FieldElement(z); }
public ECFieldElement invert() { // return new SecP160R2FieldElement(toBigInteger().modInverse(Q)); int[] z = Nat160.create(); Mod.invert(SecP160R2Field.P, x, z); return new SecP160R2FieldElement(z); }
public ECFieldElement divide(ECFieldElement b) { // return multiply(b.invert()); int[] z = Nat160.create(); Mod.invert(SecP160R2Field.P, ((SecP160R2FieldElement)b).x, z); SecP160R2Field.multiply(z, x, z); return new SecP160R2FieldElement(z); }
return createRawPoint(new SecP160R2FieldElement(x), new SecP160R2FieldElement(y), false);
return createRawPoint(new SecP160R2FieldElement(x), new SecP160R2FieldElement(y), false);
SecP160R2Field.reduce32(c, t1); SecP160R2FieldElement X3 = new SecP160R2FieldElement(T); SecP160R2Field.square(M, X3.x); SecP160R2Field.subtract(X3.x, S, X3.x); SecP160R2Field.subtract(X3.x, S, X3.x); SecP160R2FieldElement Y3 = new SecP160R2FieldElement(S); SecP160R2Field.subtract(S, X3.x, Y3.x); SecP160R2Field.multiply(Y3.x, M, Y3.x); SecP160R2Field.subtract(Y3.x, t1, Y3.x); SecP160R2FieldElement Z3 = new SecP160R2FieldElement(M); SecP160R2Field.twice(Y1.x, Z3.x); if (!Z1.isOne())
SecP160R2Field.reduce32(c, t1); SecP160R2FieldElement X3 = new SecP160R2FieldElement(T); SecP160R2Field.square(M, X3.x); SecP160R2Field.subtract(X3.x, S, X3.x); SecP160R2Field.subtract(X3.x, S, X3.x); SecP160R2FieldElement Y3 = new SecP160R2FieldElement(S); SecP160R2Field.subtract(S, X3.x, Y3.x); SecP160R2Field.multiply(Y3.x, M, Y3.x); SecP160R2Field.subtract(Y3.x, t1, Y3.x); SecP160R2FieldElement Z3 = new SecP160R2FieldElement(M); SecP160R2Field.twice(Y1.x, Z3.x); if (!Z1IsOne)
SecP160R2Field.reduce32(c, G); SecP160R2FieldElement X3 = new SecP160R2FieldElement(t4); SecP160R2Field.square(R, X3.x); SecP160R2Field.subtract(X3.x, G, X3.x); SecP160R2FieldElement Y3 = new SecP160R2FieldElement(G); SecP160R2Field.subtract(V, X3.x, Y3.x); SecP160R2Field.multiplyAddToExt(Y3.x, R, tt1); SecP160R2Field.reduce(tt1, Y3.x); SecP160R2FieldElement Z3 = new SecP160R2FieldElement(H); if (!Z1IsOne)
SecP160R2Field.reduce32(c, G); SecP160R2FieldElement X3 = new SecP160R2FieldElement(t4); SecP160R2Field.square(R, X3.x); SecP160R2Field.subtract(X3.x, G, X3.x); SecP160R2FieldElement Y3 = new SecP160R2FieldElement(G); SecP160R2Field.subtract(V, X3.x, Y3.x); SecP160R2Field.multiplyAddToExt(Y3.x, R, tt1); SecP160R2Field.reduce(tt1, Y3.x); SecP160R2FieldElement Z3 = new SecP160R2FieldElement(H); if (!Z1IsOne)
SecP160R2Field.square(t1, t2); return Nat160.eq(x1, t2) ? new SecP160R2FieldElement(t1) : null;