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// Copyright 2018 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
//go:build amd64 || arm64 || ppc64le
// +build amd64 arm64 ppc64le
package elliptic
import (
"crypto/rand"
"testing"
"time"
)
func TestFuzz(t *testing.T) {
p256 := P256()
p256Generic := p256.Params()
var scalar1 [32]byte
var scalar2 [32]byte
var timeout *time.Timer
if testing.Short() {
timeout = time.NewTimer(10 * time.Millisecond)
} else {
timeout = time.NewTimer(2 * time.Second)
}
for {
select {
case <-timeout.C:
return
default:
}
rand.Read(scalar1[:])
rand.Read(scalar2[:])
x, y := p256.ScalarBaseMult(scalar1[:])
x2, y2 := p256Generic.ScalarBaseMult(scalar1[:])
xx, yy := p256.ScalarMult(x, y, scalar2[:])
xx2, yy2 := p256Generic.ScalarMult(x2, y2, scalar2[:])
if x.Cmp(x2) != 0 || y.Cmp(y2) != 0 {
t.Fatalf("ScalarBaseMult does not match reference result with scalar: %x, please report this error to security@golang.org", scalar1)
}
if xx.Cmp(xx2) != 0 || yy.Cmp(yy2) != 0 {
t.Fatalf("ScalarMult does not match reference result with scalars: %x and %x, please report this error to security@golang.org", scalar1, scalar2)
}
}
}
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