Trait frame_system::offchain::SignMessage

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

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.

Implementors

impl<T: SigningTypes, C: AppCrypto<T::Public, T::Signature>> SignMessage<T> for Signer<T, C, ForAll>

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

impl<T: SigningTypes, C: AppCrypto<T::Public, T::Signature>> SignMessage<T> for Signer<T, C, ForAny>

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