Struct nrf52840_hal::ccm::CcmData

#[repr(C)]
pub struct CcmData { /* fields omitted */ }

Data used for encryption/decryption.

It consists of a 128-bits key, a 39-bits counter, a direction bit and a 8-bytes initialization vector. There are some reserved bits in this structure, the total size is 33 bytes.

The NONCE vector (as specified by the Bluetooth Core Specification) will be generated by hardware based on this information.

Implementations

impl CcmData

pub fn new(key: [u8; 16], initialization_vector: [u8; 8]) -> CcmData

Creates a new CcmData instance.

The direction bit and the counter value will be initialized to zero. Care must be taken when choosing an initialization vector, it must be sufficiently random.

pub fn set_key(&mut self, key: [u8; 16])

Updates the key.

pub fn set_iv(&mut self, initialization_vector: [u8; 8])

Updates the initialization vector.

pub fn set_direction(&mut self, direction: bool)

Updates the direction bit.

pub fn increment_counter(&mut self)

Increments the counter. It will wrap around to zero at its maximum value.

pub fn decrement_counter(&mut self)

Decrements the counter if the current value is bigger than zero.

Trait Implementations

impl Debug for CcmData

pub fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl PartialEq<CcmData> for CcmData

pub fn eq(&self, other: &CcmData) -> bool

This method tests for self and other values to be equal, and is used by ==.

pub fn ne(&self, other: &CcmData) -> bool

This method tests for !=.

impl StructuralPartialEq for CcmData