mirror of https://github.com/minio/minio.git
43 lines
1.3 KiB
Go
43 lines
1.3 KiB
Go
|
// MinIO Cloud Storage, (C) 2017-2019 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 crypto
|
||
|
|
|
||
|
|
import (
|
||
|
|
"encoding/hex"
|
||
|
|
"fmt"
|
||
|
|
"strings"
|
||
|
|
)
|
||
|
|
|
||
|
|
// ParseMasterKey parses the value of the environment variable
|
||
|
|
// `EnvKMSMasterKey` and returns a key-ID and a master-key KMS on success.
|
||
|
|
func ParseMasterKey(envArg string) (KMS, error) {
|
||
|
|
values := strings.SplitN(envArg, ":", 2)
|
||
|
|
if len(values) != 2 {
|
||
|
|
return nil, fmt.Errorf("Invalid KMS master key: %s does not contain a ':'", envArg)
|
||
|
|
}
|
||
|
|
var (
|
||
|
|
keyID = values[0]
|
||
|
|
hexKey = values[1]
|
||
|
|
)
|
||
|
|
if len(hexKey) != 64 { // 2 hex bytes = 1 byte
|
||
|
|
return nil, fmt.Errorf("Invalid KMS master key: %s not a 32 bytes long HEX value", hexKey)
|
||
|
|
}
|
||
|
|
var masterKey [32]byte
|
||
|
|
if _, err := hex.Decode(masterKey[:], []byte(hexKey)); err != nil {
|
||
|
|
return nil, err
|
||
|
|
}
|
||
|
|
return NewMasterKey(keyID, masterKey), nil
|
||
|
|
}
|