Exponentiation in Fpk, cyclotomic Fpk and GT

ecc/bls12-377/internal/fptower/parameters.go

@@ -0,0 +1,33 @@
+// Copyright 2020 ConsenSys AG
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package fptower
+
+import (
+	"math/big"
+
+	"github.com/consensys/gnark-crypto/ecc"
+	"github.com/consensys/gnark-crypto/ecc/bls12-377/fr"
+)
+
+// generator of the curve
+var xGen big.Int
+
+var glvBasis ecc.Lattice
+
+func init() {
+	xGen.SetString("9586122913090633729", 10)
+	_r := fr.Modulus()
+	ecc.PrecomputeLattice(_r, &xGen, &glvBasis)
+}