refactor: lifted nizk/ up and awayHEADwip

2 files changed, 0 insertions, 111 deletions

diff --git a/nizk/schnorr/schnorr.go b/nizk/schnorr/schnorr.go
deleted file mode 100644
index ad42770..0000000
--- a/nizk/schnorr/schnorr.go
+++ /dev/null
@@ -1,77 +0,0 @@
-// Proof of knowledge of a for given A = G^a
-
-package schnorr
-
-import (
-	. "kesim.org/seal/common"
-)
-
-type Statement Scalar
-
-type Commitment Point
-
-// A Schnorr signature to prove knowledge of v for given g^v.
-// Choosing a scalar v randomly, the signature consists of (V, r) with
-//
-//	V := g^v, with randomly chosen v
-//	 r := (v - x*h), with h := H(g, g^v, g^x, i), where i is given by the context.
-//
-// Verification of the signature is by comparing V =?= g^r * g^(x*h)
-type Proof struct {
-	V *Point  `json:"V"`
-	R *Scalar `json:"r"`
-}
-
-// Generates a commitment
-
-// Generates the proof, aka Schnorr signature, for given priv and i.
-// Choosing a scalar v randomly, the signature consists of (V, r) with
-//
-//	V := g^v, with randomly chosen v
-//	 r := (v - x*h), with h := H(g, g^v, g^x, i), where i is given by the context.
-//
-// Verification of the signature is by comparing V =?= g^r * g^(x*h)
-func (s *Statement) Proof(id Bytes) (pr *Proof) {
-	x := (*Scalar)(s)
-
-	// choose random v
-	v := Curve.RandomScalar()
-
-	pr = &Proof{}
-
-	// calculate g^v
-	pr.V = Curve.Exp(v)
-
-	// calculate g^x
-	gx := G.Exp(x)
-
-	// calculate h := H(g, g^v, g^x, i)
-	h := Challenge(pr.V, gx, id)
-
-	// Calculate r := v - x*h
-	xh := x.Mul(h)
-	r := v.Sub(xh)
-	pr.R = r
-
-	return pr
-}
-
-// Verifies that g^v == g^r*g^(x*h)
-func (c *Commitment) Verify(p *Proof, id Bytes) bool {
-	Gx := (*Point)(c)
-
-	// Calculate h = H(g, g^v, g^x, id)
-	h := Challenge(p.V, Gx, id)
-
-	// Calculate g^(x*h) = (g^x)^h
-	gxh := Gx.Exp(h)
-
-	// Calculate g^r
-	gr := G.Exp(p.R)
-
-	// Calculate g^r*g^(x*h)
-	grgxh := gr.Mul(gxh)
-
-	// Return true if g^v == g^r*g^(x*h)
-	return p.V.Equal(grgxh)
-}
diff --git a/nizk/schnorr/schnorr_test.go b/nizk/schnorr/schnorr_test.go
deleted file mode 100644
index 2adec8e..0000000
--- a/nizk/schnorr/schnorr_test.go
+++ /dev/null
@@ -1,34 +0,0 @@
-package schnorr
-
-import (
-	"testing"
-
-	. "kesim.org/seal/common"
-)
-
-func TestSchnorr(t *testing.T) {
-	a, e := Curve.ScalarFromReader(nil)
-	if e != nil {
-		t.Fatal(e)
-	}
-	A := G.Exp(a)
-
-	id, e := Curve.ScalarFromReader(nil)
-	if e != nil {
-		t.Fatal(e)
-	}
-	ID := G.Exp(id)
-
-	s := (*Statement)(a)
-	c := (*Commitment)(A)
-
-	pr := s.Proof(ID)
-
-	if !c.Verify(pr, ID) {
-		t.Fatalf("Verification failed!")
-	}
-
-	if c.Verify(pr, ID.Exp(a)) {
-		t.Fatal("Verification didn't fail!")
-	}
-}