Trait polkadot_sdk_frame::prelude::frame_system::offchain::SignedPayload

pub trait SignedPayload<T>: Encode
where
    T: SigningTypes,
{
    // Required method
    fn public(&self) -> <T as SigningTypes>::Public;

    // Provided methods
    fn sign<C>(&self) -> Option<<T as SigningTypes>::Signature>
       where C: AppCrypto<<T as SigningTypes>::Public, <T as SigningTypes>::Signature> { ... }
    fn verify<C>(&self, signature: <T as SigningTypes>::Signature) -> bool
       where C: AppCrypto<<T as SigningTypes>::Public, <T as SigningTypes>::Signature> { ... }
}

Utility trait to be implemented on payloads that can be signed.

Required Methods

fn public(&self) -> <T as SigningTypes>::Public

Return a public key that is expected to have a matching key in the keystore, which should be used to sign the payload.

Provided Methods

fn sign<C>(&self) -> Option<<T as SigningTypes>::Signature>

where C: AppCrypto<<T as SigningTypes>::Public, <T as SigningTypes>::Signature>,

Sign the payload using the implementor’s provided public key.

Returns Some(signature) if public key is supported.

fn verify<C>(&self, signature: <T as SigningTypes>::Signature) -> bool

where C: AppCrypto<<T as SigningTypes>::Public, <T as SigningTypes>::Signature>,

Verify signature against payload.

Returns a bool indicating whether the signature is valid or not.

Object Safety

This trait is not object safe.

Implementors