Struct Address 

pub struct Address { /* private fields */ }

A self-certifying protocol address: off1….

Ordering

Ord compares the underlying hash bytes, not the rendered string. The two orders differ: the bech32 charset (qpzry9x8gf2tvdw0s3jn54khce6mua7l) is not monotonic in ASCII — value 4 renders as y (0x79) and value 5 as 9 (0x39) — and a string comparison would also weigh the checksum characters. Protocol tiebreakers (both-create session ownership, leave election, admin auto-promotion, fork leader) must therefore compare Address values, never their Display output.

Implementations

impl Address

pub const HRP_STR: &'static str = "off"

Human-readable part carried by every address.

pub const VERSION: u8 = 0x01

The only address version this build understands.

pub const HASH_LEN: usize = 20

Length of the truncated identity-key hash, in bytes.

160 bits, which is a second-preimage margin of ~2^160 and a collision margin of ~2^80 — the birthday bound on the same truncation. Both are stated here because they buy different things and only the first is what the impersonation claim rests on:

• ~2^160 is the cost of aiming at an address that already exists: producing a key that derives to someone else’s address. That is the attack the sender-derivation gate replaced the trust-pin store to stop, and it is the figure the guides and changelog quote.
• ~2^80 is the cost of producing two identity keys that share one address, neither fixed in advance. It impersonates nobody, but it does let a single entity hold two signing keys that are indistinguishable at the address layer — enough to equivocate, and enough to defeat the “one identity cannot hold two leaves” property that the MLS leaf binding otherwise inherits from MLS signature-key uniqueness.

~2^80 is below the ~2^128 a greenfield design would target, and is a deliberate trade rather than an oversight: every mesh frame carries a sender and a recipient address, and BLE budget is the binding constraint. Widening the hash changes the wire, so it is a VERSION bump and a migration, not a patch.

pub const PAYLOAD_LEN: usize

Length of the encoded payload: version byte followed by the hash.

pub const ENCODED_LEN: usize = 44

Length of the canonical string form.

off (3) + separator (1) + data (34) + checksum (6). The data part is 34 characters because 21 bytes is 168 bits, which needs 34 five-bit groups and leaves 2 padding bits.

pub fn from_hash_bytes(hash: [u8; 20]) -> Self

Builds an address from a truncated identity-key hash.

Infallible: every 20-byte value is a valid address payload.

pub fn from_payload(payload: &[u8]) -> Result<Self, AddressError>

Builds an address from a version ‖ hash payload.

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

Returns the truncated identity-key hash.

pub fn payload(&self) -> [u8; 21]

Returns the version ‖ hash payload.

pub fn version(&self) -> u8

Returns the address version byte.

Trait Implementations

impl Clone for Address

fn clone(&self) -> Address

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Address

impl Debug for Address

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Address

fn deserialize<D: Deserializer<'de>>(deserializer: D) -> Result<Self, D::Error>

Deserialize this value from the given Serde deserializer.

impl Display for Address

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

Formats the value using the given formatter.

impl Eq for Address

impl FromStr for Address

type Err = AddressError

The associated error which can be returned from parsing.

fn from_str(s: &str) -> Result<Self, Self::Err>

Parses a string s to return a value of this type.

impl Hash for Address

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for Address

fn cmp(&self, other: &Address) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for Address

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

Equality operator ==.

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

Inequality operator !=.

impl PartialOrd for Address

fn partial_cmp(&self, other: &Address) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Serialize for Address

fn serialize<S: Serializer>(&self, serializer: S) -> Result<S::Ok, S::Error>

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for Address