Struct WorKeys 

pub struct WorKeys;

Namespace for Relay / Wake-On-Radio key derivation.

A unit struct that groups WorKeys::root and WorKeys::session without polluting the crate root.

Examples

Derive a root WOR key then a session pair:

use lora_packet::{WorKeys, NwkSKey, DevAddr};

let nwk_s_key = NwkSKey::new([0u8; 16]);
let root = WorKeys::root(&nwk_s_key);
let session = WorKeys::session(&root, &DevAddr::new([0x01, 0x02, 0x03, 0x04]));
assert_ne!(session.wor_s_int_key.as_bytes(), session.wor_s_enc_key.as_bytes());

Implementations

impl WorKeys

pub fn root(nwk_s_key: &NwkSKey) -> RootWorSKey

Derive RootWorSKey from NwkSKey.

RootWorSKey = AES-ECB-encrypt(NwkSKey, 0x01 || 0x00..).

pub fn session(root: &RootWorSKey, dev_addr: &DevAddr) -> WorSessionKeys

Derive WOR session keys from a root key and DevAddr.

Two AES-ECB blocks under the root, with the first byte set to 0x01 for the integrity key and 0x02 for the encryption key. The remainder is DevAddr_LE padded with zeros.