fix encoding of public key for audience

Author: cypherhat

path_audience.go

@@ -93,7 +93,7 @@ func (b *backend) pathAudiencesCreate(ctx context.Context, req *logical.Request,
 		return nil, err
 	}
 	publicKeyBytes := crypto.FromECDSAPub(pubkey)
-	publicKey := hexutil.Encode(publicKeyBytes)
+	publicKey := hex.EncodeToString(publicKeyBytes)
 	address := crypto.PubkeyToAddress(*pubkey)
 
 	audienceJSON := &Audience{

util.go

@@ -18,9 +18,7 @@ import (
 	"bytes"
 	"context"
 	"crypto/ecdsa"
-	"crypto/x509"
 	"encoding/json"
-	"encoding/pem"
 	"errors"
 	"fmt"
 	"io/ioutil"
@@ -194,20 +192,6 @@ func hashKeccak256(data string) []byte {
 	return hash
 }
 
-func encodePrivateKey(privateKey *ecdsa.PrivateKey) string {
-	x509Encoded, _ := x509.MarshalECPrivateKey(privateKey)
-	pemEncoded := pem.EncodeToMemory(&pem.Block{Type: "PRIVATE KEY", Bytes: x509Encoded})
-
-	return string(pemEncoded)
-}
-
-func encodePublicKey(publicKey *ecdsa.PublicKey) string {
-	x509EncodedPub, _ := x509.MarshalPKIXPublicKey(publicKey)
-	pemEncodedPub := pem.EncodeToMemory(&pem.Block{Type: "PUBLIC KEY", Bytes: x509EncodedPub})
-
-	return string(pemEncodedPub)
-}
-
 // ZeroKey removes the key from memory
 func ZeroKey(k *ecdsa.PrivateKey) {
 	b := k.D.Bits()