mirror of https://github.com/octoleo/restic.git
88 lines
2.8 KiB
Go
88 lines
2.8 KiB
Go
// +build ignore
|
|
|
|
/*
|
|
* Minio Go Library for Amazon S3 Compatible Cloud Storage
|
|
* Copyright 2017 Minio, Inc.
|
|
*
|
|
* 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 main
|
|
|
|
import (
|
|
"bytes"
|
|
"crypto/md5"
|
|
"encoding/base64"
|
|
"io/ioutil"
|
|
"log"
|
|
|
|
minio "github.com/minio/minio-go"
|
|
)
|
|
|
|
func main() {
|
|
// Note: YOUR-ACCESSKEYID, YOUR-SECRETACCESSKEY, my-testfile, my-bucketname and
|
|
// my-objectname are dummy values, please replace them with original values.
|
|
|
|
// New returns an Amazon S3 compatible client object. API compatibility (v2 or v4) is automatically
|
|
// determined based on the Endpoint value.
|
|
minioClient, err := minio.New("s3.amazonaws.com", "YOUR-ACCESSKEYID", "YOUR-SECRETACCESSKEY", true)
|
|
if err != nil {
|
|
log.Fatalln(err)
|
|
}
|
|
|
|
content := bytes.NewReader([]byte("Hello again"))
|
|
key := []byte("32byteslongsecretkeymustprovided")
|
|
h := md5.New()
|
|
h.Write(key)
|
|
encryptionKey := base64.StdEncoding.EncodeToString(key)
|
|
encryptionKeyMD5 := base64.StdEncoding.EncodeToString(h.Sum(nil))
|
|
|
|
// Amazon S3 does not store the encryption key you provide.
|
|
// Instead S3 stores a randomly salted HMAC value of the
|
|
// encryption key in order to validate future requests.
|
|
// The salted HMAC value cannot be used to derive the value
|
|
// of the encryption key or to decrypt the contents of the
|
|
// encrypted object. That means, if you lose the encryption
|
|
// key, you lose the object.
|
|
var metadata = map[string]string{
|
|
"x-amz-server-side-encryption-customer-algorithm": "AES256",
|
|
"x-amz-server-side-encryption-customer-key": encryptionKey,
|
|
"x-amz-server-side-encryption-customer-key-MD5": encryptionKeyMD5,
|
|
}
|
|
|
|
// minioClient.TraceOn(os.Stderr) // Enable to debug.
|
|
_, err = minioClient.PutObject("mybucket", "my-encrypted-object.txt", content, 11, minio.PutObjectOptions{UserMetadata: metadata})
|
|
if err != nil {
|
|
log.Fatalln(err)
|
|
}
|
|
|
|
opts := minio.GetObjectOptions{}
|
|
for k, v := range metadata {
|
|
opts.Set(k, v)
|
|
}
|
|
coreClient := minio.Core{minioClient}
|
|
reader, _, err := coreClient.GetObject("mybucket", "my-encrypted-object.txt", opts)
|
|
if err != nil {
|
|
log.Fatalln(err)
|
|
}
|
|
defer reader.Close()
|
|
|
|
decBytes, err := ioutil.ReadAll(reader)
|
|
if err != nil {
|
|
log.Fatalln(err)
|
|
}
|
|
if !bytes.Equal(decBytes, []byte("Hello again")) {
|
|
log.Fatalln("Expected \"Hello, world\", got %s", string(decBytes))
|
|
}
|
|
}
|