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generate_encryption_key.go
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/
generate_encryption_key.go
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// Copyright 2020 Google LLC
//
// 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
//
// https://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 objects
// [START storage_generate_encryption_key]
import (
"crypto/rand"
"encoding/base64"
"fmt"
"io"
)
// generateEncryptionKey generates a 256 bit (32 byte) AES encryption key and
// prints the base64 representation.
func generateEncryptionKey(w io.Writer) error {
// This is included for demonstration purposes. You should generate your own
// key. Please remember that encryption keys should be handled with a
// comprehensive security policy.
key := make([]byte, 32)
if _, err := rand.Read(key); err != nil {
return fmt.Errorf("rand.Read: %v", err)
}
encryptionKey := base64.StdEncoding.EncodeToString(key)
fmt.Fprintf(w, "Generated base64-encoded encryption key: %v\n", encryptionKey)
return nil
}
// [END storage_generate_encryption_key]