Rename helper packages

helper/crypto.go

@@ -1,38 +0,0 @@
-// Copyright 2017 Frédéric Guillot. All rights reserved.
-// Use of this source code is governed by the Apache 2.0
-// license that can be found in the LICENSE file.
-
-package helper
-
-import (
-	"crypto/rand"
-	"crypto/sha256"
-	"encoding/base64"
-	"fmt"
-)
-
-// HashFromBytes returns a SHA-256 checksum of the input.
-func HashFromBytes(value []byte) string {
-	sum := sha256.Sum256(value)
-	return fmt.Sprintf("%x", sum)
-}
-
-// Hash returns a SHA-256 checksum of a string.
-func Hash(value string) string {
-	return HashFromBytes([]byte(value))
-}
-
-// GenerateRandomBytes returns random bytes.
-func GenerateRandomBytes(size int) []byte {
-	b := make([]byte, size)
-	if _, err := rand.Read(b); err != nil {
-		panic(err)
-	}
-
-	return b
-}
-
-// GenerateRandomString returns a random string.
-func GenerateRandomString(size int) string {
-	return base64.URLEncoding.EncodeToString(GenerateRandomBytes(size))
-}