/*
 * Copyright 2017-2019 Kopano and its licensors
 *
 * 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 encryption

import (
	"crypto/rand"
	"io"
)

// GenerateKey generates a new random secret key.
func GenerateKey() (*[KeySize]byte, error) {
	key := new([KeySize]byte)
	_, err := io.ReadFull(rand.Reader, key[:])
	if err != nil {
		return nil, err
	}

	return key, nil
}

// GenerateNonce creates a new random nonce.
func GenerateNonce() (*[NonceSize]byte, error) {
	nonce := new([NonceSize]byte)
	_, err := io.ReadFull(rand.Reader, nonce[:])
	if err != nil {
		return nil, err
	}

	return nonce, nil
}