ssi_verification_methods_core

Trait ControllerProvider

Source 
pub trait ControllerProvider {
    type Controller<'a>: Controller
       where Self: 'a;

    // Required method
    async fn get_controller<'a>(
        &'a self,
        id: &'a Iri,
    ) -> Result<Option<Self::Controller<'a>>, ControllerError>;

    // Provided methods
    async fn require_controller<'a>(
        &'a self,
        id: &'a Iri,
    ) -> Result<Self::Controller<'a>, ControllerError> { ... }
    async fn allows_verification_method<'a>(
        &'a self,
        controller_id: &'a Iri,
        method_id: &'a Iri,
        proof_purposes: ProofPurposes,
    ) -> Result<bool, ControllerError> { ... }
    async fn ensure_allows_verification_method<'a>(
        &'a self,
        controller_id: &'a Iri,
        method_id: &'a Iri,
        proof_purpose: ProofPurpose,
    ) -> Result<(), ProofValidationError> { ... }
}
Expand description

Controller provider.

A provider is in charge of retrieving the verification method controllers from their identifiers.

Required Associated Types§

Source

type Controller<'a>: Controller where Self: 'a

Controller reference type.

Required Methods§

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async fn get_controller<'a>( &'a self, id: &'a Iri, ) -> Result<Option<Self::Controller<'a>>, ControllerError>

Returns the controller with the given identifier, if it can be found.

Provided Methods§

Source

async fn require_controller<'a>( &'a self, id: &'a Iri, ) -> Result<Self::Controller<'a>, ControllerError>

Returns the controller with the given identifier, or fails if it cannot be found.

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async fn allows_verification_method<'a>( &'a self, controller_id: &'a Iri, method_id: &'a Iri, proof_purposes: ProofPurposes, ) -> Result<bool, ControllerError>

Checks that the controller identified by controller_id allows the use of the verification method method_id with the given proof purposes.

Source

async fn ensure_allows_verification_method<'a>( &'a self, controller_id: &'a Iri, method_id: &'a Iri, proof_purpose: ProofPurpose, ) -> Result<(), ProofValidationError>

Ensures that the controller identified by controller_id allows the use of the verification method method_id with the given proof purposes.

Contrarily to the allows_verification_method function, this function returns an error if one of the input proof purposes is not allowed.

Dyn Compatibility§

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors§