Struct Jwk 

pub struct Jwk {
    pub kid: Option<String>,
    pub kty: String,
    pub alg: Option<String>,
    pub n: Option<String>,
    pub e: Option<String>,
    pub crv: Option<String>,
    pub x: Option<String>,
}

A JSON Web Key, as published at /jwks.json.

This struct is widened (not an enum) so that every existing call site that builds a Jwk with a plain struct literal — inside this crate and downstream — keeps compiling: it only needs two more fields (crv, x), both None for the RSA shape it already builds. See the to_decoding_key doc comment for why an enum/#[serde(untagged)] representation was rejected in favor of this.

Two shapes are represented today:

• RSA (kty: "RSA"): n, e are populated; crv, x are None.
• OKP/Ed25519 (kty: "OKP"): crv (always "Ed25519"), x are populated; n, e are None.

None fields are omitted from the serialized JSON (skip_serializing_if) so each shape’s wire format matches its RFC exactly: RFC 7517 §6.3.1 for RSA (kty, n, e), RFC 8037 §2 for OKP (kty, crv, x). Neither shape ever emits the other’s fields, and neither emits a stray "n":null / "x":null.

Fields

kid: Option<String>

kty: String

alg: Option<String>

n: Option<String>

RSA modulus (base64url, unpadded). None for OKP keys.

e: Option<String>

RSA public exponent (base64url, unpadded). None for OKP keys.

crv: Option<String>

OKP subtype curve name, e.g. "Ed25519" (RFC 8037 §2). None for RSA keys.

x: Option<String>

OKP public key (base64url, unpadded, RFC 8037 §2). None for RSA keys.

Implementations

impl Jwk

pub fn to_decoding_key(&self) -> Result<DecodingKey, AuthError>

Derives a DecodingKey from this JWK, dispatching on kty.

Supports "RSA" (unchanged from before this key gained the OKP shape) and "OKP" with crv: "Ed25519" (RFC 8037). Any other kty, or an OKP key advertising an unsupported curve, is rejected.

Trait Implementations

impl Clone for Jwk

fn clone(&self) -> Jwk

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Jwk

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Jwk

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for Jwk

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

where __S: Serializer,

Serialize this value into the given Serde serializer.