// Copyright (c) 2020 Proton Technologies AG
//
// This file is part of ProtonMail Bridge.
//
// ProtonMail Bridge is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// ProtonMail Bridge is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.

package credentials

import (
	"crypto/rand"
	"encoding/base64"
	"io"
)

const keySize = 16

// generateKey generates a new random key.
func generateKey() []byte {
	key := make([]byte, keySize)
	if _, err := io.ReadFull(rand.Reader, key); err != nil {
		panic(err)
	}
	return key
}

func generatePassword() string {
	return base64.RawURLEncoding.EncodeToString(generateKey())
}