Struct AuxSecurityHeader 

pub struct AuxSecurityHeader {
    pub security_level: u8,
    pub key_id_mode: u8,
    pub reserved: u8,
    pub frame_counter: u32,
    pub key_source: u64,
    pub key_index: Option<u8>,
}

Security Control field bit layout (1 byte): Bits 0-2: Security Level (3 bits) Bits 3-4: Key Identifier Mode (2 bits) Bits 5-7: Reserved (3 bits) Parsed representation of an Auxiliary Security Header.

Fields

security_level: u8

Security level (3 bits).

key_id_mode: u8

Key identifier mode (2 bits).

reserved: u8

Reserved bits (3 bits).

frame_counter: u32

Frame counter (4 bytes).

key_source: u64

Key source (0, 4, or 8 bytes depending on key_id_mode).

key_index: Option<u8>

Key index (1 byte, present if key_id_mode != 0).

Implementations

impl AuxSecurityHeader

pub fn len(&self) -> usize

Total byte length of this security header.

pub fn compute_len(security_control: u8) -> usize

Compute the byte length of the security header given the security control byte (first byte of the header).

pub fn parse(buf: &[u8], offset: usize) -> Result<(Self, usize), FieldError>

Parse an Auxiliary Security Header from the buffer at the given offset. Returns the parsed header and the number of bytes consumed.

pub fn build(&self) -> Vec<u8>

Build the security header bytes.

pub fn write_into( &self, buf: &mut [u8], offset: usize, ) -> Result<usize, FieldError>

Write the security header into a buffer at the given offset. Returns the number of bytes written.

Trait Implementations

impl Clone for AuxSecurityHeader

fn clone(&self) -> AuxSecurityHeader

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for AuxSecurityHeader

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

Formats the value using the given formatter.

impl Default for AuxSecurityHeader

fn default() -> Self

Returns the “default value” for a type.

impl PartialEq for AuxSecurityHeader

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Eq for AuxSecurityHeader

impl StructuralPartialEq for AuxSecurityHeader