Merge pull request #10 from drand/rfcv7

use rfc v7 spec

Author: nikkolasg

.circleci/config.yml

@@ -8,11 +8,6 @@ jobs:
       # specify the version
       - image: circleci/golang:latest
 
-      # Specify service dependencies here if necessary
-      # CircleCI maintains a library of pre-built images
-      # documented at https://circleci.com/docs/2.0/circleci-images/
-      # - image: circleci/postgres:9.4
-
     working_directory: /go/src/github.com/drand/bls12-381
     steps:
       - checkout

kyber_test.go

@@ -313,6 +313,7 @@ func TestKyberThresholdG1(t *testing.T) {
 }
 
 func TestKyberMap(t *testing.T) {
+	t.Skip("waiting for paired to upgrade to v7")
 	// TEST compatibility with pairing_plus v19 hash-to-curve
 	type Hashable interface {
 		Hash(msg []byte) kyber.Point

swu.go

@@ -45,7 +45,7 @@ func swuMapG1(u *fe) (*fe, *fe) {
 	}
 	y := new(fe)
 	sqrt(y, y2)
-	if y.signBE() != u.signBE() {
+	if y.sign() != u.sign() {
 		neg(y, y)
 	}
 	return x, y
@@ -109,7 +109,7 @@ func swuMapG2(e *fp2, u *fe2) (*fe2, *fe2) {
 	}
 	y := e.new()
 	e.sqrt(y, y2)
-	if y.signBE() != u.signBE() {
+	if y.sign() != u.sign() {
 		e.neg(y, y)
 	}
 	return x, y