wpa_passphrase
Generate WPA pre-shared key from passphrase
TLDR
Compute WPA-PSK key reading passphrase from stdin
SYNOPSIS
wpa_passphrase ssid [passphrase]
DESCRIPTION
wpa_passphrase generates a WPA-PSK (Pre-Shared Key) configuration from an ASCII passphrase for a given network SSID. The output is in wpa_supplicant.conf format and can be appended to the configuration file.
The tool pre-computes the PSK using PBKDF2, which is faster than having wpa_supplicant compute it each time. The output includes both the plain text passphrase (commented) and the computed PSK.
PARAMETERS
ssid
The network name (SSID) to generate the key forpassphrase
The WiFi password (read from stdin if omitted)
CAVEATS
Providing the passphrase on the command line exposes it in process listings and shell history. For security, prefer reading from stdin. The SSID is case-sensitive and must match exactly. Part of the wpa_supplicant package.
SEE ALSO
wpa_supplicant(8), wpa_cli(8), wpa_supplicant.conf(5)