Meadowcap

An implementation of Meadowcap, a capability system for permissioning read and write access to the Willow data model.

Includes implementations of communal capabilities, owned capabilities, a type unifying the two, as well as the generation of McAuthorisationTokens for use with the Willow data model's is_authorised_write parameter.

Type parameters

Willow is a parametrised family of protocols, and so this crate makes heavy use of generic parameters.

The following generic parameter names are used consistently across this crate:

• MCL - A usize representing max_component_length.
• MCC - A usize representing max_component_count.
• MPL - A usize representing max_path_length.
• NamespacePublicKey - The type used for NamespacePublicKey (willowprotocol.org), must implement the willow_data_model::NamespaceId trait.
• NamespaceSignature - The type used for NamespaceSignature (willowprotocol.org).
• UserPublicKey - The type used for UserPublicKey (willowprotocol.org), must implement the SubspaceId trait.
• UserSignature - The type used for UserSignature (willowprotocol.org).
• PD - The type used for PayloadDigest (willowprotocol.org), must implement the willow_data_model::PayloadDigest trait.