hostap_crypt_conf: command not found

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH
/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin

If it's empty, You may set the PATH variable with this command

export PATH="/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin"

On Debian possible default full paths are:

/usr/sbin/hostap_crypt_conf - from package: hostap-utils

You may install the required package with command apt-get install {package}

Error in other languages:
hostap_crypt_conf: bevel nie gevind nie
hostap_crypt_conf: comandă negăsită
hostap_crypt_conf: comando não encontrado
hostap_crypt_conf: commande introuvable
hostap_crypt_conf: command not found
hostap_crypt_conf: käsku ei ole
hostap_crypt_conf: không tìm thấy lệnh
hostap_crypt_conf: komanda nerasta
hostap_crypt_conf: Kommando nicht gefunden.
hostap_crypt_conf: kommandot finns inte
hostap_crypt_conf: komut yok
hostap_crypt_conf: nie znaleziono polecenia
hostap_crypt_conf: níor aimsíodh an t-ordú
hostap_crypt_conf: no se encontró la orden
hostap_crypt_conf: no s'ha trobat l'ordre
hostap_crypt_conf: opdracht niet gevonden
hostap_crypt_conf: parancs nem található
hostap_crypt_conf: perintah tidak ditemukan
hostap_crypt_conf: príkaz nenájdený
hostap_crypt_conf: příkaz nenalezen
hostap_crypt_conf: команда не найдена
hostap_crypt_conf: командата не е открита
hostap_crypt_conf: 命令找不到
hostap_crypt_conf: コマンドが見つかりません