err != nil { t.Errorf("failed scalar->bytes->scalar round-trip: %v", err) } b := scalarMinusOneBytes b[31] += 1 s := scOne if out, err := s.SetCanonicalBytes(b[:]); err == nil { t.Errorf("SetCanonicalBytes worked on a non-canonical value") } else if s != scOne { t.Errorf("SetCanonicalBytes modified its receiver") } else if out != nil { t.Errorf("SetCanonicalBytes did not return nil with an error") } } func TestScalarSetUniform(t *testing.T) { mod, _ := new(big.Int).SetString("27742317777372353535",...