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curve_test.go
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curve_test.go
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package caigo
import (
"crypto/elliptic"
"fmt"
"math/big"
"testing"
)
func TestPedersenHash(t *testing.T) {
curve, err := SC(WithConstants("./pedersen_params.json"))
if err != nil {
t.Errorf("Could not init with constant points: %v\n", err)
}
hash, err := curve.PedersenHash([]*big.Int{HexToBN("0x12773"), HexToBN("0x872362")})
if err != nil {
t.Errorf("Hashing err: %v\n", err)
}
if hash.Cmp(HexToBN("0x5ed2703dfdb505c587700ce2ebfcab5b3515cd7e6114817e6026ec9d4b364ca")) != 0 {
t.Errorf("incorrect hash %v got %v needed", hash, HexToBN("0x5ed2703dfdb505c587700ce2ebfcab5b3515cd7e6114817e6026ec9d4b364ca"))
}
hash, err = curve.PedersenHash([]*big.Int{HexToBN("0x13d41f388b8ea4db56c5aa6562f13359fab192b3db57651af916790f9debee9"), HexToBN("0x537461726b4e6574204d61696c")})
if err != nil {
t.Errorf("Hashing err: %v\n", err)
}
exp := "0x180c0a3d13c1adfaa5cbc251f4fc93cc0e26cec30ca4c247305a7ce50ac807c"
if BigToHex(hash) != exp {
t.Errorf("incorrect hash %v got %v\n", BigToHex(hash), exp)
}
}
func BenchmarkPedersenHash(b *testing.B) {
curve, _ := SC(WithConstants("./pedersen_params.json"))
var suite [][]*big.Int
suite = append(suite, []*big.Int{HexToBN("0x12773"), HexToBN("0x872362")})
suite = append(suite, []*big.Int{HexToBN("0x1277312773"), HexToBN("0x872362872362")})
suite = append(suite, []*big.Int{HexToBN("0x1277312773"), HexToBN("0xCD2a3d9F938E13CD947Ec05AbC7FE734Df8DD826")})
suite = append(suite, []*big.Int{HexToBN("0xbBbBBBBbbBBBbbbBbbBbbbbBBbBbbbbBbBbbBBbB"), HexToBN("0x872362872362")})
suite = append(suite, []*big.Int{HexToBN("0xCD2a3d9F938E13CD947Ec05AbC7FE734Df8DD826"), HexToBN("0xbBbBBBBbbBBBbbbBbbBbbbbBBbBbbbbBbBbbBBbB")})
suite = append(suite, []*big.Int{HexToBN("0x7f15c38ea577a26f4f553282fcfe4f1feeb8ecfaad8f221ae41abf8224cbddd"), HexToBN("0x13d41f388b8ea4db56c5aa6562f13359fab192b3db57651af916790f9debee9")})
suite = append(suite, []*big.Int{HexToBN("0x7f15c38ea577a26f4f553282fcfe4f1feeb8ecfaad8f221ae41abf8224cbddd"), HexToBN("0x7f15c38ea577a26f4f553282fcfe4f1feeb8ecfaad8f221ae41abf8224cbdde")})
for _, test := range suite {
b.Run(fmt.Sprintf("input_size_%d_%d", test[0].BitLen(), test[1].BitLen()), func(b *testing.B) {
curve.PedersenHash(test)
})
}
}
func TestInitCurveWithConstants(t *testing.T) {
curve, err := SC(WithConstants("./pedersen_params.json"))
if err != nil {
t.Errorf("Could not init with constant points: %v\n", err)
}
hash := HexToBN("0x7f15c38ea577a26f4f553282fcfe4f1feeb8ecfaad8f221ae41abf8224cbddd")
r, _ := new(big.Int).SetString("2458502865976494910213617956670505342647705497324144349552978333078363662855", 10)
s, _ := new(big.Int).SetString("3439514492576562277095748549117516048613512930236865921315982886313695689433", 10)
h, _ := HexToBytes("04033f45f07e1bd1a51b45fc24ec8c8c9908db9e42191be9e169bfcac0c0d997450319d0f53f6ca077c4fa5207819144a2a4165daef6ee47a7c1d06c0dcaa3e456")
x, y := elliptic.Unmarshal(curve, h)
if !curve.Verify(hash, r, s, x, y) {
t.Errorf("successful signature did not verify\n")
}
}
func TestDivMod(t *testing.T) {
curve, _ := SC()
inX, _ := new(big.Int).SetString("311379432064974854430469844112069886938521247361583891764940938105250923060", 10)
inY, _ := new(big.Int).SetString("621253665351494585790174448601059271924288186997865022894315848222045687999", 10)
DIVMODRES, _ := new(big.Int).SetString("2577265149861519081806762825827825639379641276854712526969977081060187505740", 10)
divR := DivMod(inX, inY, curve.P)
if divR.Cmp(DIVMODRES) != 0 {
t.Errorf("DivMod Res %v does not == expected %v\n", divR, DIVMODRES)
}
}
func TestAdd(t *testing.T) {
curve, _ := SC()
pub0, _ := new(big.Int).SetString("1468732614996758835380505372879805860898778283940581072611506469031548393285", 10)
pub1, _ := new(big.Int).SetString("1402551897475685522592936265087340527872184619899218186422141407423956771926", 10)
EXPX, _ := new(big.Int).SetString("2573054162739002771275146649287762003525422629677678278801887452213127777391", 10)
EXPY, _ := new(big.Int).SetString("3086444303034188041185211625370405120551769541291810669307042006593736192813", 10)
resX, resY := curve.Add(curve.Gx, curve.Gy, pub0, pub1)
if resX.Cmp(EXPX) != 0 {
t.Errorf("ResX %v does not == expected %v\n", resX, EXPX)
}
if resY.Cmp(EXPY) != 0 {
t.Errorf("ResY %v does not == expected %v\n", resY, EXPY)
}
}
func TestMultAir(t *testing.T) {
curve, _ := SC()
ry, _ := new(big.Int).SetString("2458502865976494910213617956670505342647705497324144349552978333078363662855", 10)
pubx, _ := new(big.Int).SetString("1468732614996758835380505372879805860898778283940581072611506469031548393285", 10)
puby, _ := new(big.Int).SetString("1402551897475685522592936265087340527872184619899218186422141407423956771926", 10)
resX, _ := new(big.Int).SetString("182543067952221301675635959482860590467161609552169396182763685292434699999", 10)
resY, _ := new(big.Int).SetString("3154881600662997558972388646773898448430820936643060392452233533274798056266", 10)
x, y, err := curve.MimicEcMultAir(ry, pubx, puby, curve.Gx, curve.Gy)
if err != nil {
t.Errorf("MultAirERR %v\n", err)
}
if x.Cmp(resX) != 0 {
t.Errorf("ResX %v does not == expected %v\n", x, resX)
}
if y.Cmp(resY) != 0 {
t.Errorf("ResY %v does not == expected %v\n", y, resY)
}
}
func TestGetY(t *testing.T) {
curve, _ := SC()
h, _ := HexToBytes("04033f45f07e1bd1a51b45fc24ec8c8c9908db9e42191be9e169bfcac0c0d997450319d0f53f6ca077c4fa5207819144a2a4165daef6ee47a7c1d06c0dcaa3e456")
x, y := elliptic.Unmarshal(curve, h)
yout := curve.GetYCoordinate(x)
if y.Cmp(yout) != 0 {
t.Errorf("Derived Y %v does not == expected %v\n", yout, y)
}
}