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package nizk
import (
"testing"
. "kesim.org/seal/common"
)
func TestStage1Simple(t *testing.T) {
id := Curve.RandomScalar()
b1 := NewBit(id, true)
b2 := NewBit(id, false)
bc1, _ := b1.Commit()
bc2, _ := b2.Commit()
s1, c1 := b1.CommitStage1()
s2, c2 := b2.CommitStage1()
r1, pr1 := s1.RevealStage1() // Note: no Xs.
r2, pr2 := s2.RevealStage1() // Note: no Xs
if !bc1.VerifyStage1(c1, r1, pr1) {
t.Fatal("Could not verify st1 with c1 and pr1, plus=true case")
}
if !bc2.VerifyStage1(c2, r2, pr2) {
t.Fatal("Could not verify st2 with c2 and pr2, plus=false case")
}
// Wrong proof test
if bc1.VerifyStage1(c1, r1, pr2) {
t.Fatal("Shouldn't be able to verify c1 with pr2")
}
}
func TestStage1FromScalars(t *testing.T) {
var id, α, β, x, r *Scalar
for _, s := range []**Scalar{&id, &α, &β, &x, &r} {
*s = Curve.RandomScalar()
}
b1 := NewBitFromScalars(id, true, α, β)
b2 := NewBitFromScalars(id, false, α, β)
bc1, _ := b1.Commit()
bc2, _ := b2.Commit()
s1, c1 := b1.CommitStage1FromScalars(r, x)
s2, c2 := b2.CommitStage1FromScalars(x, r)
r1, pr1 := s1.RevealStage1() // Note: no Xs
r2, pr2 := s2.RevealStage1() // Note: no Xs
if !bc1.VerifyStage1(c1, r1, pr1) {
t.Fatal("Could not verify st1 with c1 and pr1, plus=true case")
}
if !bc2.VerifyStage1(c2, r2, pr2) {
t.Fatal("Could not verify st2 with c2 and pr2, plus=false case")
}
// Wrong proof test
if bc1.VerifyStage1(c1, r1, pr2) ||
bc1.VerifyStage1(c2, r2, pr2) ||
bc2.VerifyStage1(c1, r1, pr2) ||
bc2.VerifyStage1(c2, r2, pr1) {
t.Fatal("Shouldn't be able to verify bc_i with c_j or pr_j")
}
}
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