Struct DeviceId 

pub struct DeviceId(/* private fields */);

Device identifier derived from Ed25519 public key.

The DeviceId is the first 16 bytes of SHA-256(public_key), providing:

• Uniqueness guarantee from the cryptographic hash
• Compact representation (32 hex chars instead of 64)
• Collision resistance from SHA-256

Example

use peat_mesh::security::{DeviceKeypair, DeviceId};

let keypair = DeviceKeypair::generate();
let device_id = keypair.device_id();

// Convert to hex string for display/serialization
let hex = device_id.to_hex();

// Parse back from hex
let parsed = DeviceId::from_hex(&hex)?;
assert_eq!(device_id, parsed);

Implementations

impl DeviceId

pub fn from_public_key(public_key: &VerifyingKey) -> DeviceId

Create a DeviceId from an Ed25519 public key.

The ID is computed as SHA-256(public_key)[0..16].

pub fn from_public_key_bytes(bytes: &[u8]) -> Result<DeviceId, SecurityError>

Create a DeviceId from raw public key bytes (32 bytes).

pub fn from_bytes(bytes: [u8; 16]) -> DeviceId

Create a DeviceId from raw bytes (16 bytes).

pub fn as_bytes(&self) -> &[u8; 16]

Get the raw bytes of this DeviceId.

pub fn to_hex(self) -> String

Convert to a lowercase hex string (32 characters).

pub fn from_hex(hex: &str) -> Result<DeviceId, SecurityError>

Parse from a hex string (32 characters).

Trait Implementations

impl Clone for DeviceId

fn clone(&self) -> DeviceId

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for DeviceId

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for DeviceId

fn deserialize<__D>( __deserializer: __D, ) -> Result<DeviceId, <__D as Deserializer<'de>>::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for DeviceId

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

Formats the value using the given formatter.

impl From<DeviceId> for NodeId

fn from(device_id: DeviceId) -> NodeId

Converts to this type from the input type.

impl Hash for DeviceId

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

where __H: Hasher,

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 PartialEq for DeviceId

fn eq(&self, other: &DeviceId) -> 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 Serialize for DeviceId

fn serialize<__S>( &self, __serializer: __S, ) -> Result<<__S as Serializer>::Ok, <__S as Serializer>::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl TryFrom<&NodeId> for DeviceId

type Error = SecurityError

The type returned in the event of a conversion error.

fn try_from( node_id: &NodeId, ) -> Result<DeviceId, <DeviceId as TryFrom<&NodeId>>::Error>

Performs the conversion.

impl Copy for DeviceId

impl Eq for DeviceId

impl StructuralPartialEq for DeviceId