Emil Lundberg emlun

This document has moved; its new address is: https://github.com/Yubico/webauthn-recovery-extension

https://imgur.com/a/AEkyAoNhttps://imgur.com/a/AEkyAoN

DRAFT: Recovery Credentials Extension (`recovery`)

This extension allows for recovery credentials to be registered with an RP, which can be used for account recovery in the case of a lost/destroyed main authenticator. This is done by associating one or more backup authenticators with the main authenticator, the latter of which is then able to provide additional credentials for account recovery to the RP without involving the backup authenticators. The mechanism of setting this up is outside of the scope of this extension, however a state counter is defined as follows:

	#!/usr/bin/env python3

	import sys

	from typing import Tuple


	def is_container(value: bytes) -> bool:
	return len(value) > 0 and value[0] in {0x30, 0x31}

	// Copyright (c) 2018, Yubico AB
	// All rights reserved.
	//
	// Redistribution and use in source and binary forms, with or without
	// modification, are permitted provided that the following conditions are met:
	//
	// 1. Redistributions of source code must retain the above copyright notice, this
	// list of conditions and the following disclaimer.
	//
	// 2. Redistributions in binary form must reproduce the above copyright notice,

	#!/usr/bin/python3
	# Tiny tool for generating valid but nonsensical PNG images of a given file size.
	#
	# Usage:
	#
	# $ python pngen.py SIZE_BYTES
	#
	# Example:
	#
	# $ python pngen.py 1024 > output.png

	<html>
	<head>
	<meta charset="utf-8"/>
	</head>
	<body>
	<script>

	const ykNanoCredentialId = new Uint8Array([
	177, 125, 44, 11, 125, 20, 124, 221, 117, 42, 171, 163, 91, 125, 150, 85,
	217, 150, 76, 209, 3, 91, 109, 115, 21, 100, 42, 36, 107, 73, 20, 120,

	-- The function get_name() should return a single string that is the name of the puzzle.
	--
	function get_name()
	return "Frobnicator"
	end

	-- The function get_description() should return an array of strings, where each string is
	-- a line of description for the puzzle. Surrounding text with asterisks will cause it to
	-- be rendered in bold, something we use when mentioning a signal by name.
	--

	#!/usr/bin/python3

	from binascii import hexlify, unhexlify
	from cryptography.hazmat.backends import default_backend
	from cryptography.hazmat.backends import default_backend
	from cryptography.hazmat.primitives import hashes
	from cryptography.hazmat.primitives.asymmetric import ec

	sig_alg = ec.ECDSA(hashes.SHA256())

Emil Lundberg emlun

DRAFT: Recovery Credentials Extension (recovery)

DRAFT: Recovery Credentials Extension (`recovery`)