Trait polkadot_sdk_frame::prelude::frame_system::offchain::SignMessage

pub trait SignMessage<T>
where
    T: SigningTypes,
{
    type SignatureData;

    // Required methods
    fn sign_message(&self, message: &[u8]) -> Self::SignatureData;
    fn sign<TPayload, F>(&self, f: F) -> Self::SignatureData
       where F: Fn(&Account<T>) -> TPayload,
             TPayload: SignedPayload<T>;
}

A message signer.

Required Associated Types

type SignatureData

A signature data.

May contain account used for signing and the Signature itself.

Required Methods

fn sign_message(&self, message: &[u8]) -> Self::SignatureData

Sign a message.

Implementation of this method should return a result containing the signature.

fn sign<TPayload, F>(&self, f: F) -> Self::SignatureData

where F: Fn(&Account<T>) -> TPayload, TPayload: SignedPayload<T>,

Construct and sign given payload.

This method expects f to return a SignedPayload object which is then used for signing.

Object Safety

This trait is not object safe.

Implementors

impl<T, C> SignMessage<T> for Signer<T, C>

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

type SignatureData = Option<(Account<T>, <T as SigningTypes>::Signature)>

impl<T, C> SignMessage<T> for Signer<T, C, ForAll>

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

type SignatureData = Vec<(Account<T>, <T as SigningTypes>::Signature)>