You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 
 
 

30 lines
1.0 KiB

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.InvalidBackupFlags = void 0;
exports.parseBackupFlags = parseBackupFlags;
/**
* Make sense of Bits 3 and 4 in authenticator indicating:
*
* - Whether the credential can be used on multiple devices
* - Whether the credential is backed up or not
*
* Invalid configurations will raise an `Error`
*/
function parseBackupFlags({ be, bs }) {
const credentialBackedUp = bs;
let credentialDeviceType = 'singleDevice';
if (be) {
credentialDeviceType = 'multiDevice';
}
if (credentialDeviceType === 'singleDevice' && credentialBackedUp) {
throw new InvalidBackupFlags('Single-device credential indicated that it was backed up, which should be impossible.');
}
return { credentialDeviceType, credentialBackedUp };
}
class InvalidBackupFlags extends Error {
constructor(message) {
super(message);
this.name = 'InvalidBackupFlags';
}
}
exports.InvalidBackupFlags = InvalidBackupFlags;