Crate ctap_types

ctap-types maps the various types involved in the FIDO CTAP protocol to Rust structures consisting of heapless data types.

We currently follow the non-public editor’s draft dated 19 March 2019. It still uses FIDO_2_1_PRE to signal new commands, but uses non-vendor API numbering (e.g. 0xA for credential management).

It also contains a lightweight CBOR deserializer, as the existing serde_cbor creates very large code.

The various transport protocols (USB, NFC, BLE) are expected to handle low-level protocol details and deserialize requests / serialize responses, so the authenticator logic is decoupled from these details.

Re-exports

pub use heapless;

pub use heapless_bytes;

pub use cbor_smol as serde;

pub use ctap2::Error;

pub use ctap2::Result;

Modules

authenticator

The FIDO CTAP Authenticator API in terms of RPC with our types.

cose

Because why wouldn’t pile JOSE on top of CBOR…

ctap1

Types for CTAP1.

ctap2

Types for CTAP2.

sizes

webauthn

Subset of WebAuthn types that crept into CTAP.

Structs

Bytes

String

A fixed capacity String

Vec

A fixed capacity Vec

Traits

Rpc

Call a remote procedure with a request, receive a response, maybe.