open-consul/command/keygen.go

51 lines
1.0 KiB
Go

package command
import (
"crypto/rand"
"encoding/base64"
"fmt"
)
// KeygenCommand is a Command implementation that generates an encryption
// key for use in `consul agent`.
type KeygenCommand struct {
BaseCommand
}
func (c *KeygenCommand) Run(args []string) int {
c.InitFlagSet()
if err := c.FlagSet.Parse(args); err != nil {
return 1
}
key := make([]byte, 16)
n, err := rand.Reader.Read(key)
if err != nil {
c.UI.Error(fmt.Sprintf("Error reading random data: %s", err))
return 1
}
if n != 16 {
c.UI.Error(fmt.Sprintf("Couldn't read enough entropy. Generate more entropy!"))
return 1
}
c.UI.Output(base64.StdEncoding.EncodeToString(key))
return 0
}
func (c *KeygenCommand) Help() string {
c.InitFlagSet()
return c.HelpCommand(`
Usage: consul keygen
Generates a new encryption key that can be used to configure the
agent to encrypt traffic. The output of this command is already
in the proper format that the agent expects.
`)
}
func (c *KeygenCommand) Synopsis() string {
return "Generates a new encryption key"
}