Enum ChecksumValue 

pub enum ChecksumValue {
    None,
    Crc32c(u32),
    Crc64(u64),
    Md5([u8; 16]),
}

Content of the messageChecksum (variable per ChecksumKind).

Variants

None

No checksum field written.

Crc32c(u32)

CRC-32C u32.

Crc64(u64)

CRC-64-XZ u64.

Md5([u8; 16])

MD5-128 16-byte hash.

Implementations

impl ChecksumValue

pub fn kind(&self) -> ChecksumKind

Associated ChecksumKind.

pub fn compute(kind: ChecksumKind, payload: &[u8]) -> Self

Computes the messageChecksum over payload with the desired algorithm (DDSI-RTPS 2.5 §9.4.2.15.2).

payload is the range over which the checksum is computed. Per spec these are the submessages after the HeaderExtension submessage; the caller ensures this via an appropriate slice cut.

Implemented via zerodds_foundation::crc32c, zerodds_foundation::crc64_xz and zerodds_foundation::md5 — pure-Rust no_std hashes without an external crypto-crate dependency (Pillar 9 zero-dependency).

pub fn verify(&self, payload: &[u8]) -> bool

Verifies that the checksum held in this value matches the one computed over payload.

Returns true if the algorithm is active AND the value matches; true also if kind() == None (no checksum declared, nothing to verify); false on mismatch.

Spec §9.4.2.15.2: the receiver discards the message on mismatch.

Trait Implementations

impl Clone for ChecksumValue

fn clone(&self) -> ChecksumValue

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ChecksumValue

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

Formats the value using the given formatter.

impl Default for ChecksumValue

fn default() -> ChecksumValue

Returns the “default value” for a type.

impl Eq for ChecksumValue

impl PartialEq for ChecksumValue

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for ChecksumValue