Struct CryptoHeader 

pub struct CryptoHeader {
    pub transformation_id: CryptoTransformIdentifier,
    pub session_id: [u8; 4],
    pub init_vector_suffix: [u8; 8],
}

Spec §10.5.2.3 CryptoHeader:

  struct CryptoHeader {
    CryptoTransformIdentifier transformation_id;
    CryptoSessionId           session_id;        // 4 byte
    CryptoInitVectorSuffix    init_vector_suffix; // 8 byte
  };

Total 8 + 4 + 8 = 20 Bytes.

Fields

transformation_id: CryptoTransformIdentifier

Transform identifier.

session_id: [u8; 4]

Session ID (assigned by the plugin, 4 bytes).

init_vector_suffix: [u8; 8]

IV suffix (8 bytes). Full IV = session_id || init_vector_suffix.

Implementations

impl CryptoHeader

pub const WIRE_SIZE: usize = 20

Wire-Size (Spec).

pub fn to_bytes(&self) -> [u8; 20]

Encode to wire bytes (20 bytes).

pub fn from_bytes(bytes: &[u8]) -> Result<Self, &'static str>

Decode 20 wire bytes.

Errors

A static string if the wire buffer is the wrong length.

pub fn full_iv(&self) -> [u8; 12]

Computes the full 12-byte IV (spec §10.5.2.3): session_id || init_vector_suffix. Used as the nonce in AES-GCM.

Trait Implementations

impl Clone for CryptoHeader

fn clone(&self) -> CryptoHeader

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for CryptoHeader

impl Debug for CryptoHeader

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

Formats the value using the given formatter.

impl Eq for CryptoHeader

impl PartialEq for CryptoHeader

fn eq(&self, other: &CryptoHeader) -> 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 StructuralPartialEq for CryptoHeader