\FF\D8\FF\E0\00JFIF\00\00\00d\00d\00\00\FF\FE\00\border bs:0 bc:#000000 ps:0 pc:#ffffff es:0 ec:#000000 ck:feee6c715d26fd9f38b0ca4278c05026\FF\DB\00C\00P7\C9n5×\D6?\BDê\9Ds\EBp\9F[`8m\B7)o\B5\E8\E6I\99\FE3]]A2\BA\8Cw\D6E\93\\DEv\C8\009\F2\F1NI?uc\\F5\EA\96k\xN<~buv\EA\C8\D7 \8B\84\CEcxI\BBg\AE\9E=\D6+n\EC\80\C8A\8C\AE\EB\CF\D5\DA\E9"2\A4\B9j5\EB\F3W\B63\96\B30Yu\DA\FC8\ED\DF\E7Ms\FB\F1\8E\B3\FA\EA\E8\E6(\883zs\F2_\8DFk\8Bh \00\8C\DCw\D3R\B5+6X\BA\B2\C4j\AB0\B4\FCMw\C2I\8E\9B\E3\A9~9u\FA\D3l\80\C8%p\EE\FDn2€ \00 $\FEj\C4e\A9\DB\~\95\A7\A5\80EK\BB\8DDsP\00@@AD'k\CF\E8\DB\D2(\80\9AK\D3\85\D6lb\F2\BA\8C*\80\00)\95 59\A3R:\F3\CE"\B6\80\88\00\00i1u4ê\E9\F2á\A6\A2\FACM\93WMb*\E0*\00\00\00\00\00(\A8\80\00\00\80\00\00\00\00\00\00\00\00\00\FF\D9 C/// # This file is dual licensed under the terms of the Apache License, Version # 2.0, and the BSD License. See the LICENSE file in the root of this repository # for complete details. from __future__ import annotations import base64 import typing from urllib.parse import quote, urlencode from cryptography.hazmat.primitives import constant_time, hmac from cryptography.hazmat.primitives.hashes import SHA1, SHA256, SHA512 from cryptography.hazmat.primitives.twofactor import InvalidToken HOTPHashTypes = typing.Union[SHA1, SHA256, SHA512] def _generate_uri( hotp: HOTP, type_name: str, account_name: str, issuer: typing.Optional[str], extra_parameters: typing.List[typing.Tuple[str, int]], ) -> str: parameters = [ ("digits", hotp._length), ("secret", base64.b32encode(hotp._key)), ("algorithm", hotp._algorithm.name.upper()), ] if issuer is not None: parameters.append(("issuer", issuer)) parameters.extend(extra_parameters) label = ( f"{quote(issuer)}:{quote(account_name)}" if issuer else quote(account_name) ) return f"otpauth://{type_name}/{label}?{urlencode(parameters)}" class HOTP: def __init__( self, key: byte