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package ed25519group
import (
"math/big"
"testing"
)
func TestQL(t *testing.T) {
qbytes := Q.Bytes()
lbytes := L.Bytes()
if len(qbytes) != 32 {
t.Errorf("Expected Q to be 32 bytes integer but found to be: %d", len(qbytes))
}
if len(lbytes) != 32 {
t.Errorf("Expected Q to be 32 bytes integer but found to be: %d", len(lbytes))
}
qExpected := "57896044618658097711785492504343953926634992332820282019728792003956564819949"
lExpected := "7237005577332262213973186563042994240857116359379907606001950938285454250989"
qText := Q.Text(10)
lText := L.Text(10)
if qText != qExpected {
t.Errorf("Expected Q: %s\nFound Q: %s\n", qExpected, qText)
}
if lText != lExpected {
t.Errorf("Expected L: %s\nFound L: %s\n", lExpected, lText)
}
}
func TestD(t *testing.T) {
dExpected := "-4513249062541557337682894930092624173785641285191125241628941591882900924598840740"
dText := D.Text(10)
if dText != dExpected {
t.Errorf("Expected D: %s\nFound D: %s\n", dExpected, dText)
}
}
func TestI(t *testing.T) {
var iExpected big.Int
iExpected.SetString("19681161376707505956807079304988542015446066515923890162744021073123829784752", 10)
if I.Cmp(&iExpected) != 0 {
t.Errorf("Calculated value of I is not same as expected value\nCalculated I: %s\n", I.Text(10))
}
}
func TestBAndXrecover(t *testing.T) {
var byExpected, bxExpected big.Int
bxExpected.SetString("15112221349535400772501151409588531511454012693041857206046113283949847762202", 10)
byExpected.SetString("46316835694926478169428394003475163141307993866256225615783033603165251855960", 10)
if Bx.Cmp(&bxExpected) != 0 {
t.Errorf("Calculated Bx and expected Bx are not same\nCalculated: %s\n", Bx.Text(10))
}
if By.Cmp(&byExpected) != 0 {
t.Errorf("Calculated By and expected By are not same\nCalculated: %s\n", By.Text(10))
}
}
func TestBAndBase(t *testing.T) {
var affineX, affineY big.Int
affineX.SetString("15112221349535400772501151409588531511454012693041857206046113283949847762202", 10)
affineY.SetString("46316835694926478169428394003475163141307993866256225615783033603165251855960", 10)
if B.X.Cmp(&affineX) != 0 {
t.Errorf("Calculated base point X is not same as expected: %s", B.X.Text(10))
}
if B.Y.Cmp(&affineY) != 0 {
t.Errorf("Calculated base point Y is not same as expected: %s", B.Y.Text(10))
}
var extendedX, extendedY, extendedT big.Int
extendedZ := big.NewInt(1)
extendedX.SetString("15112221349535400772501151409588531511454012693041857206046113283949847762202", 10)
extendedY.SetString("46316835694926478169428394003475163141307993866256225615783033603165251855960", 10)
extendedT.SetString("46827403850823179245072216630277197565144205554125654976674165829533817101731", 10)
expectedExtended := ExtendedPoint{&extendedX, &extendedY, extendedZ, &extendedT}
if expectedExtended.Cmp(&Base) != 0 {
t.Errorf("Calculated base point is not same as the expected base point\n")
}
expectedZero := ExtendedPoint{big.NewInt(0), big.NewInt(1), big.NewInt(1), big.NewInt(0)}
if expectedZero.Cmp(&Zero) != 0 {
t.Errorf("Calculated extended Zero is not same as expected\n")
}
}
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