public void CompareToTest()
{
BigInt a = new BigInt(123);
BigInt b = new BigInt(9);
Assert.AreEqual(0, a.CompareTo(a));
Assert.AreEqual(1, a.CompareTo(b));
Assert.AreEqual(-1, b.CompareTo(a));
}
public static BigInt HashToField(byte[] toHash, Field field)
{
int byteLength = 1 + (field.GetP().BitLength() - 1) / 8;
byte[] ba = HashToLength(toHash, byteLength);
BigInt b = new BigInt(ba); //This could fail
while (b.CompareTo(field.GetP()) >= 0)
{
b = b.ShiftRight(1);
}
return(b);
}
public static KeyPair Setup(Pairing e, Random rnd)
{
Point P = e.Curve2.RandomPoint(rnd);
BigInt s = new BigInt(e.GroupOrder.BitLength(), rnd);
while (s.CompareTo(e.GroupOrder) >= 0)
{
s = s.ShiftRight(1);
}
Point Ppub = e.Curve2.Multiply(P, s);
BFMasterPublicKey pk = new BFMasterPublicKey(e, P, Ppub);
BFMasterPrivateKey sk = new BFMasterPrivateKey(s);
//return new KeyPair(pk, sk);
return(new KeyPair(null, null));
}
[TestMethod] public void TestCmp()
{
int[] arr = new int[] {
0,
2, -2,
0x2211, -0x2211,
0x323232,
-0x323232,
};
foreach (int ia in arr)
{
BigInt a_ = (BigInt)ia;
foreach (int ib in arr)
{
BigInt b_ = (BigInt)ib;
AssertEquals("cmp", a_ == b_, ia == ib);
AssertEquals("cmp", a_ != b_, ia != ib);
AssertEquals("cmp", a_ <= b_, ia <= ib);
AssertEquals("cmp", a_ > b_, ia > ib);
}
}
BigInt a = (BigInt)0x0A_0F22;
BigInt b = (BigInt)0x0A_0F22;
BigInt c = (BigInt)0x0;
BigInt d = (BigInt)(-0x0A_0F22);
var two = (BigInt)2;
AssertEquals("cmp", a == b, true);
AssertEquals("cmp", a == (BigInt)0x0A_0F22, true);
AssertEquals("cmp", a != b, false);
AssertEquals("cmp", a <= b, true);
AssertEquals("cmp", a <= two, false);
AssertEquals("cmp", a > two, true);
AssertEquals("cmp", a == two, false);
AssertEquals("cmp", a < (BigInt)0xA0_ABCD, true);
AssertEquals("cmp", a < (BigInt)0xABCD, false);
AssertEquals("cmp", a < (BigInt)0x100ABCD, true);
AssertEquals("cmp", c.CompareTo(d), 1);
AssertEquals("cmp", a < (BigInt)0x09_ABCD, false);
}