@didtools/cacao/dist/siwx/siwTezos.js

Typescript library for Ceramic OCAP

import { SignatureType, SiwxMessage } from './siwx.js';
import * as uint8arrays from 'uint8arrays';
export class SiwTezosMessage extends SiwxMessage {
    toMessage() {
        return super.toMessage('Tezos');
    }
    signMessage() {
        let message;
        switch(this.type){
            case SignatureType.PERSONAL_SIGNATURE:
                {
                    message = encodePayload(this.toMessage());
                    break;
                }
            default:
                {
                    message = encodePayload(this.toMessage());
                    break;
                }
        }
        return message;
    }
}
function encodePayload(message) {
    const michelinePrefix = '05';
    const stringPrefix = '01';
    const len = ('0000000' + message.length.toString(16)).slice(-8);
    const text = uint8arrays.toString(uint8arrays.fromString(message, 'utf-8'), 'hex');
    return michelinePrefix + stringPrefix + len + text;
}