69 lines
1.3 KiB
Go
69 lines
1.3 KiB
Go
// Copyright (c) HashiCorp, Inc.
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// SPDX-License-Identifier: MPL-2.0
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package keygen
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import (
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"crypto/rand"
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"encoding/base64"
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"flag"
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"fmt"
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"github.com/hashicorp/consul/command/flags"
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"github.com/mitchellh/cli"
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)
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func New(ui cli.Ui) *cmd {
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c := &cmd{UI: ui}
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c.init()
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return c
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}
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type cmd struct {
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UI cli.Ui
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flags *flag.FlagSet
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help string
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}
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func (c *cmd) init() {
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c.flags = flag.NewFlagSet("", flag.ContinueOnError)
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c.help = flags.Usage(help, c.flags)
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}
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func (c *cmd) Run(args []string) int {
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if err := c.flags.Parse(args); err != nil {
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return 1
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}
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key := make([]byte, 32)
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n, err := rand.Reader.Read(key)
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if err != nil {
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c.UI.Error(fmt.Sprintf("Error reading random data: %s", err))
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return 1
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}
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if n != 32 {
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c.UI.Error(fmt.Sprintf("Couldn't read enough entropy. Generate more entropy!"))
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return 1
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}
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c.UI.Output(base64.StdEncoding.EncodeToString(key))
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return 0
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}
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func (c *cmd) Synopsis() string {
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return synopsis
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}
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func (c *cmd) Help() string {
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return c.help
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}
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const synopsis = "Generates a new encryption key"
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const help = `
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Usage: consul keygen
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Generates a new 32-byte encryption key that can be used to configure the
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agent to encrypt traffic. The output of this command is already
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in the proper format that the agent expects.
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`
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