add simpler API to nizk stages

1 files changed, 10 insertions, 1 deletions

diff --git a/nizk/stage2/stage2.go b/nizk/stage2/stage2.go
index a17000f..88bfa59 100644
--- a/nizk/stage2/stage2.go
+++ b/nizk/stage2/stage2.go
@@ -47,7 +47,16 @@ type Commitment struct {
 	Z_ *Point
 }
 
-func NewStatement(typ Type, a, b, r, x, y, r_, x_, y_ *Scalar) *Statement {
+func NewStatement(typ Type) *Statement {
+	var s [8]*Scalar
+	for i := range s {
+		s[i] = Curve.RandomScalar()
+	}
+
+	return NewStatementFromScalars(typ, s[0], s[1], s[2], s[3], s[4], s[5], s[6], s[7])
+}
+
+func NewStatementFromScalars(typ Type, a, b, r, x, y, r_, x_, y_ *Scalar) *Statement {
 	if typ > Set || typ < None {
 		panic("unknown type")
 	}