/
keygen_aes_gcm.go
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/
keygen_aes_gcm.go
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// Licensed to Elasticsearch B.V. under one or more contributor
// license agreements. See the NOTICE file distributed with
// this work for additional information regarding copyright
// ownership. Elasticsearch B.V. licenses this file to you 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 cmd
import (
"encoding/base64"
"fmt"
"os"
"github.com/awnumar/memguard"
"github.com/spf13/cobra"
"github.com/zntrio/harp/v2/pkg/sdk/cmdutil"
"github.com/zntrio/harp/v2/pkg/sdk/log"
)
// -----------------------------------------------------------------------------
var keygenAESCmd = func() *cobra.Command {
var keySize uint16
cmd := &cobra.Command{
Use: "aes-gcm",
Aliases: []string{"aes"},
Short: "Generate and print an AES-GCM key",
Run: func(cmd *cobra.Command, args []string) {
ctx, cancel := cmdutil.Context(cmd.Context(), "harp-keygen-aes", conf.Debug.Enabled, conf.Instrumentation.Logs.Level)
defer cancel()
// Validate key size
switch keySize {
case 128, 192, 256:
break
default:
log.For(ctx).Fatal("invalid specificed key size, only 128, 192 and 256 are supported.")
}
fmt.Fprintf(os.Stdout, "aes-gcm:%s", base64.URLEncoding.EncodeToString(memguard.NewBufferRandom(int(keySize/8)).Bytes()))
},
}
// Parameters
cmd.Flags().Uint16Var(&keySize, "size", 128, "Specify an AES key size (128, 192, 256)")
return cmd
}