kdf.go

// Encryption - AES-GCM 端到端加密
// Copyright (c) 2021-present, b3log.org
//
// Encryption is licensed under Mulan PSL v2.
// You can use this software according to the terms and conditions of the Mulan PSL v2.
// You may obtain a copy of Mulan PSL v2 at:
//         http://license.coscl.org.cn/MulanPSL2
// THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT, MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
// See the Mulan PSL v2 for more details.

package encryption

import (
	"crypto/rand"

	"golang.org/x/crypto/scrypt"
)

func KDF(password, salt string) (key []byte, err error) {
	key, err = scrypt.Key([]byte(password), []byte(salt), 32768, 8, 1, 32)
	if nil != err {
		return
	}
	return
}

func getRandomData(size int) (ret []byte, err error) {
	ret = make([]byte, size)
	_, err = rand.Read(ret)
	return
}