Struct KeyBinding 

#[non_exhaustive]
pub struct KeyBinding {
    pub audience: String,
    pub nonce: String,
    pub issued_at: i64,
    pub additional: IndexMap<String, Value>,
}

Available on crate feature sd-jwt only.

What a key binding JWT asserts (RFC 9901 §4.3): the verifier it is for, the nonce of the transaction and when it was made; sd_hash is computed when the SD-JWT is signed.

Examples

use chrono::{TimeZone as _, Utc};
use identity_kit::sd_jwt_vc::KeyBinding;

let binding = KeyBinding::new(
    "https://verifier.example.org",
    "1234567890",
    Utc.timestamp_opt(1748536865, 0).unwrap(),
);
let claims = binding.claims("fMV05vuMARs3uG0Dg0BYd_7mQR9EGBkRof0cTZyuqXE".to_owned());
assert_eq!(claims.iat, Some(1748536865));
assert_eq!(claims.additional["nonce"], "1234567890");

Fields (Non-exhaustive)

Non-exhaustive structs could have additional fields added in future. Therefore, non-exhaustive structs cannot be constructed in external crates using the traditional Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.

audience: String

aud: the verifier the presentation is for.

nonce: String

nonce: the value binding the presentation to the transaction.

issued_at: i64

iat: when the key binding JWT is issued.

additional: IndexMap<String, Value>

Further claims.

Implementations

impl KeyBinding

pub fn new( audience: impl Into<String>, nonce: impl Into<String>, issued_at: DateTime<Utc>, ) -> Self

A key binding for audience with nonce, issued at issued_at.

pub fn with_claim( self, name: impl Into<String>, value: impl Into<Value>, ) -> Self

This binding with the claim name set to value.

pub fn claims(&self, sd_hash: String) -> JwtClaims

The claims set of the key binding JWT, with sd_hash.

Trait Implementations

impl Clone for KeyBinding

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for KeyBinding

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

Formats the value using the given formatter.

impl Eq for KeyBinding

impl PartialEq for KeyBinding

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for KeyBinding