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68 lines
1.8 KiB
68 lines
1.8 KiB
/*
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* Minio Cloud Storage, (C) 2018 Minio, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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*/
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package madmin
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import (
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"bytes"
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"crypto/rand"
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"io"
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"io/ioutil"
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"github.com/minio/sio"
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"golang.org/x/crypto/argon2"
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)
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// EncryptData - encrypts server config data.
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func EncryptData(password string, data []byte) ([]byte, error) {
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salt := make([]byte, 32)
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if _, err := io.ReadFull(rand.Reader, salt); err != nil {
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return nil, err
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}
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// derive an encryption key from the master key and the nonce
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var key [32]byte
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copy(key[:], argon2.IDKey([]byte(password), salt, 1, 64*1024, 4, 32))
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encrypted, err := sio.EncryptReader(bytes.NewReader(data), sio.Config{
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Key: key[:]},
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)
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if err != nil {
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return nil, err
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}
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edata, err := ioutil.ReadAll(encrypted)
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return append(salt, edata...), err
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}
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// DecryptData - decrypts server config data.
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func DecryptData(password string, data io.Reader) ([]byte, error) {
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salt := make([]byte, 32)
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if _, err := io.ReadFull(data, salt); err != nil {
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return nil, err
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}
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// derive an encryption key from the master key and the nonce
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var key [32]byte
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copy(key[:], argon2.IDKey([]byte(password), salt, 1, 64*1024, 4, 32))
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decrypted, err := sio.DecryptReader(data, sio.Config{
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Key: key[:]},
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)
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if err != nil {
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return nil, err
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}
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return ioutil.ReadAll(decrypted)
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}
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