From 0ada8c47427bfe604024d383ed7a250b04c82fee Mon Sep 17 00:00:00 2001
From: Özgür Kesim <oec@codeblau.de>
Date: Thu, 21 Nov 2024 17:13:47 +0100
Subject: refactor: lifted nizk/ up and away

---
 commit_test.go | 57 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 57 insertions(+)
 create mode 100644 commit_test.go

(limited to 'commit_test.go')

diff --git a/commit_test.go b/commit_test.go
new file mode 100644
index 0000000..873061c
--- /dev/null
+++ b/commit_test.go
@@ -0,0 +1,57 @@
+package seal
+
+import (
+	"testing"
+
+	. "kesim.org/seal/common"
+)
+
+func TestStatement(t *testing.T) {
+	id := Curve.RandomScalar()
+
+	b1 := NewBit(id, true)
+	b2 := NewBit(id, false)
+
+	if !b1.Commitment.Verify(id, b1.Proof) {
+		t.Fatal("Could not verify st1 with c1, plus=true case")
+	}
+	if !b2.Commitment.Verify(id, b2.Proof) {
+		t.Fatal("Could not verify st2 with c2, plus=false case")
+	}
+
+	// Use the wrong proof
+	if b2.Commitment.Verify(id, b1.Proof) {
+		t.Fatal("Verify with wrong proof should have failed!")
+	}
+
+	// Use wrong id
+	x := Curve.RandomScalar()
+	if b1.Commitment.Verify(x, b1.Proof) || b2.Commitment.Verify(x, b2.Proof) {
+		t.Fatal("Verify with wrong id should have failed!")
+	}
+}
+
+func TestStatementFromScalar(t *testing.T) {
+	var α, β, id = Curve.RandomScalar(), Curve.RandomScalar(), Curve.RandomScalar()
+
+	b1 := NewBitFromScalars(id, true, α, β)
+	b2 := NewBitFromScalars(id, false, α, β)
+
+	if !b1.Commitment.Verify(id, b1.Proof) {
+		t.Fatal("Could not verify st1 with c1, plus=true case")
+	}
+	if !b2.Commitment.Verify(id, b2.Proof) {
+		t.Fatal("Could not verify st2 with c2, plus=false case")
+	}
+
+	// Use the wrong proof
+	if b2.Commitment.Verify(id, b1.Proof) {
+		t.Fatal("Verify with wrong proof should have failed!")
+	}
+
+	// Use the wrong Id
+	x := Curve.RandomScalar()
+	if b1.Commitment.Verify(x, b2.Proof) || b2.Commitment.Verify(x, b2.Proof) {
+		t.Fatal("Verify with wrong id should have failed!")
+	}
+}
-- 
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