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slackhq_nebula/cmd/nebula-cert/passwords.go
John Maguire a56a97e5c3
Add ability to encrypt CA private key at rest (#386)
Fixes #8.

`nebula-cert ca` now supports encrypting the CA's private key with a
passphrase. Pass `-encrypt` in order to be prompted for a passphrase.
Encryption is performed using AES-256-GCM and Argon2id for KDF. KDF
parameters default to RFC recommendations, but can be overridden via CLI
flags `-argon-memory`, `-argon-parallelism`, and `-argon-iterations`.
2023-04-03 13:59:38 -04:00

29 lines
489 B
Go

package main
import (
"errors"
"fmt"
"os"
"golang.org/x/term"
)
var ErrNoTerminal = errors.New("cannot read password from nonexistent terminal")
type PasswordReader interface {
ReadPassword() ([]byte, error)
}
type StdinPasswordReader struct{}
func (pr StdinPasswordReader) ReadPassword() ([]byte, error) {
if !term.IsTerminal(int(os.Stdin.Fd())) {
return nil, ErrNoTerminal
}
password, err := term.ReadPassword(int(os.Stdin.Fd()))
fmt.Println()
return password, err
}