Enum CipherSuite 

#[repr(u8)]
pub enum CipherSuite {
    Aes256Gcm = 1,
    ChaCha20Poly1305 = 2,
}

Supported cipher suites.

The wire byte for each variant is stable across feature configurations — Aes256Gcm = 1, ChaCha20Poly1305 = 2 — so a peer’s CipherSuite offer round-trips through to_byte / from_byte regardless of which build the peer is running. Under --features fips only Aes256Gcm is actually selectable; ChaCha20Poly1305 is reserved for wire-format stability and is rejected at negotiate_cipher / CryptoSession::with_suite{_peer} with CoreError::CipherSuiteUnavailable.

Variants

Aes256Gcm = 1

AES-256-GCM — optimal on HW-accelerated platforms. FIPS-approved; the only suite selectable under --features fips.

ChaCha20Poly1305 = 2

ChaCha20-Poly1305 — optimal on SW-only platforms (IoT, old ARM).

Reserved for wire-format stability under --features fips. The variant remains in the enum so a peer’s offer can still be parsed and a clear CipherSuiteUnavailable error returned; construction via CryptoSession::with_suite{_peer} and selection in negotiate_cipher are explicitly rejected under fips. Not FIPS-approved (RFC 7539 / 8439 — outside FIPS 140-3 Annex A).

Implementations

impl CipherSuite

pub fn to_byte(self) -> u8

Byte representation for handshake negotiation

pub fn from_byte(b: u8) -> Option<Self>

Parse from byte

Trait Implementations

impl Clone for CipherSuite

fn clone(&self) -> CipherSuite

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for CipherSuite

impl Debug for CipherSuite

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

Formats the value using the given formatter.

impl Eq for CipherSuite

impl PartialEq for CipherSuite

fn eq(&self, other: &CipherSuite) -> 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 CipherSuite