Struct Signable 

pub struct Signable { /* private fields */ }

Data that can be turned into a JWS

This struct ensures that the serialized data is stable; Signable::protected_header_serialized and Signable::payload will always return the same bytes; Signable::protected_header_registered will always return a reference to the same RegisteredHeader struct.

This allows SignedData to retain the data as it was signed, carrying a signature that remains verifiable.

Examples

use biscuit::jws::{Header, RegisteredHeader, Signable};
use biscuit::jwa::SignatureAlgorithm;
use biscuit::Empty;
let header = Header::<Empty>::from(RegisteredHeader {
    algorithm: SignatureAlgorithm::ES256,
    ..Default::default()
});
let payload = b"These bytes cannot be altered";
let data = Signable::new(header, payload.to_vec())?;

Implementations

impl Signable

pub fn new<H>(header: Header<H>, payload: Vec<u8>) -> Result<Signable, Error>

where H: Serialize,

Build a Signable from a header and a payload

Header and payload will both be protected by the signature, we do not make use of unprotected headers

Errors

Errors are returned if headers can’t be serialized; this would only happen if the H type carrying extension headers can not be serialized.

pub fn sign(self, secret: Secret) -> Result<SignedData, Error>

Convenience function to build a SignedData from this Signable See SignedData::sign

pub fn protected_header_registered(&self) -> &RegisteredHeader

Return a reference to the registered (known to biscuit) protected headers

pub fn protected_header_serialized(&self) -> &[u8]

Return a reference to protected headers as they were serialized

pub fn deserialize_protected_header<H>(&self) -> Result<Header<H>, Error>

where H: DeserializeOwned,

Deserialize protected headers

This allows access to protected headers beyond those that are recognized with RegisteredHeader

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

Return a reference to the payload bytes

pub fn deserialize_json_payload<T>(&self) -> Result<T, Error>

where T: DeserializeOwned,

Deserialize a JSON payload

Note

JWS does not put any requirement on payload bytes, which need not be JSON

Trait Implementations

impl Clone for Signable

fn clone(&self) -> Signable

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Signable

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

Formats the value using the given formatter.