wps_context::network_key field

network_key - The current Network Key (PSK) or %NULL to generate new If %NULL, Registrar will generate per-device PSK. In addition, AP uses this when acting as an Enrollee to notify Registrar of the current configuration. When using WPA/WPA2-Personal, this key can be either the ASCII passphrase (8..63 characters) or the 32-octet PSK (64 hex characters). When this is set to the ASCII passphrase, the PSK can be provided in the psk buffer and used per-Enrollee to control which key type is included in the Credential (e.g., to reduce calculation need on low-powered devices by provisioning PSK while still allowing other devices to get the passphrase).