@canvas-js/chain-substrate

The Substrate session signer takes an injected polkadot-js extension, or generates a random Substrate keypair, and uses it to authenticate a new session.

It also handles verification of messages matching this authentication method.

Table of Contents

• Installation
• API

Installation

npm i @canvas-js/chain-atp

API

import type { Signature, SessionSigner, Action, Message, Session } from "@canvas-js/interfaces";
import { InjectedExtension } from "@polkadot/extension-inject/types";
import { KeypairType } from "@polkadot/util-crypto/types";
import type { SubstrateSessionData } from "./types.js";
type SubstrateSignerInit = {
    sessionDuration?: number;
    extension?: InjectedExtension;
    substrateKeyType?: KeypairType;
};
export declare class SubstrateSigner implements SessionSigner {
    constructor(init?: SubstrateSignerInit);
    readonly match: (address: string) => boolean;
    verifySession(topic: string, session: Session): Promise<void>;
    getSession(topic: string, options?: {
        chain?: string;
        timestamp?: number;
        fromCache?: boolean;
    }): Promise<Session<SubstrateSessionData>>;
    sign(message: Message<Action | Session>): Signature;
    clear(topic: string): Promise<void>;
}