commit 1f10f003c220003d1e2ecf6dc5fa33734e1aa916 Author: jolheiser Date: Thu Nov 18 22:35:19 2021 -0600 Initial commit Signed-off-by: jolheiser diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..b47d2dc --- /dev/null +++ b/.gitignore @@ -0,0 +1,5 @@ +.idea/ +.mypy_cache/ +.pytest_cache/ +venv/ +**/*.pyc \ No newline at end of file diff --git a/LICENSE b/LICENSE new file mode 100644 index 0000000..94a9ed0 --- /dev/null +++ b/LICENSE @@ -0,0 +1,674 @@ + GNU GENERAL PUBLIC LICENSE + Version 3, 29 June 2007 + + Copyright (C) 2007 Free Software Foundation, Inc. + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The GNU General Public License is a free, copyleft license for +software and other kinds of works. + + The licenses for most software and other practical works are designed +to take away your freedom to share and change the works. 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If your program is a subroutine library, you +may consider it more useful to permit linking proprietary applications with +the library. If this is what you want to do, use the GNU Lesser General +Public License instead of this License. But first, please read +. diff --git a/README.md b/README.md new file mode 100644 index 0000000..b11a077 --- /dev/null +++ b/README.md @@ -0,0 +1,15 @@ +# py-spectre + +Python implementation of [Spectre](https://spectre.app). + +## Code Quality + +1. `black .` +2. `isort .` +3. `flake8` +4. `mypy` +5. `pytest` + +## License + +[GPLv3](LICENSE) - Same as original algorithm \ No newline at end of file diff --git a/requirements.txt b/requirements.txt new file mode 100644 index 0000000..c2401e0 --- /dev/null +++ b/requirements.txt @@ -0,0 +1,22 @@ +attrs==21.2.0 +black==21.11b1 +click==8.0.3 +flake8==4.0.1 +iniconfig==1.1.1 +isort==5.10.1 +mccabe==0.6.1 +mypy==0.910 +mypy-extensions==0.4.3 +packaging==21.3 +pathspec==0.9.0 +platformdirs==2.4.0 +pluggy==1.0.0 +py==1.11.0 +pycodestyle==2.8.0 +pyflakes==2.4.0 +pyparsing==3.0.6 +pytest==6.2.5 +regex==2021.11.10 +toml==0.10.2 +tomli==1.2.2 +typing_extensions==4.0.0 diff --git a/setup.cfg b/setup.cfg new file mode 100644 index 0000000..f997df9 --- /dev/null +++ b/setup.cfg @@ -0,0 +1,17 @@ +[isort] +multi_line_output=3 +include_trailing_comma=True +force_grid_wrap=0 +use_parentheses=True +line_length=88 + +[flake8] +ignore = E203, E266, E501, W503 +max-line-length = 88 +max-complexity = 18 +select = B,C,E,F,W,T4 +exclude = .git,venv + +[mypy] +files=spectre,test +ignore_missing_imports=true \ No newline at end of file diff --git a/spectre/__init__.py b/spectre/__init__.py new file mode 100644 index 0000000..e69de29 diff --git a/spectre/scope.py b/spectre/scope.py new file mode 100644 index 0000000..0767d0a --- /dev/null +++ b/spectre/scope.py @@ -0,0 +1,42 @@ +import abc +from enum import Enum + +from spectre.template import Template + + +class Scope(Enum): + AUTHENTICATION = "Authentication" + IDENTIFICATION = "Identification" + RECOVERY = "Recovery" + + def default_template(self) -> Template: + if self == Scope.AUTHENTICATION: + return Template.LONG + elif self == Scope.IDENTIFICATION: + return Template.NAME + elif self == Scope.RECOVERY: + return Template.PHRASE + return Template.MAXIMUM + + +class Scoper(abc.ABC): + @abc.abstractmethod + def scope(self, scope: Scope) -> str: + pass + + +class SimpleScoper(Scoper): + def __init__(self, key: str): + self.key = key + + def scope(self, scope: Scope) -> str: + if scope == Scope.AUTHENTICATION: + return self.key + elif scope == Scope.IDENTIFICATION: + return f"{self.key}.login" + elif scope == Scope.RECOVERY: + return f"{self.key}.answer" + return self.key + + +default_scoper = SimpleScoper("com.lyndir.masterpassword") diff --git a/spectre/spectre.py b/spectre/spectre.py new file mode 100644 index 0000000..9c17fe1 --- /dev/null +++ b/spectre/spectre.py @@ -0,0 +1,68 @@ +import hashlib +import struct +from hmac import HMAC + +from spectre.scope import Scope, Scoper, default_scoper +from spectre.template import Template, _characters, _templates + + +class Spectre: + def __init__(self, name: str, secret: str, scoper: Scoper = default_scoper): + self._name = name + self._secret = secret + self._scoper = scoper + self._key = self._user_key() + + def _user_key(self) -> bytes: + name_bytes = self._name.encode() + secret_bytes = self._secret.encode() + key_scope = self._scoper.scope(Scope.AUTHENTICATION).encode() + + name_bytes_len = len(name_bytes) + key_salt = key_scope + _big_endian(name_bytes_len) + name_bytes + n = 32768 # N + r = 8 + p = 2 + m = 128 * r * (n + p + 2) + return hashlib.scrypt( + secret_bytes, maxmem=m, salt=key_salt, n=n, r=r, p=p, dklen=64 + ) + + def _site_key(self, name: str, counter: int, scope: Scope) -> bytes: + name_bytes = name.encode() + scope_bytes = self._scoper.scope(scope).encode() + + name_bytes_len = len(name_bytes) + key_salt = ( + scope_bytes + + _big_endian(name_bytes_len) + + name_bytes + + _big_endian(counter) + ) + + return HMAC(self._key, msg=key_salt, digestmod=hashlib.sha256).digest() + + def site( + self, + site_name: str, + template_type: Template = None, + counter: int = 1, + scope: Scope = Scope.AUTHENTICATION, + ) -> str: + if not template_type: + template_type = scope.default_template() + site_key = self._site_key(site_name, counter, scope) + + template_set = _templates[template_type] + template = template_set[site_key[0] % len(template_set)] + + out = "" + for idx, b in enumerate(template): + chars = _characters[b] + char = chars[site_key[idx + 1] % len(chars)] + out += char + return out + + +def _big_endian(n: int) -> bytes: + return struct.pack(">I", n) diff --git a/spectre/template.py b/spectre/template.py new file mode 100644 index 0000000..30f6472 --- /dev/null +++ b/spectre/template.py @@ -0,0 +1,80 @@ +from enum import Enum +from typing import Dict, List + + +class Template(Enum): + MAXIMUM = "Maximum" + LONG = "Long" + MEDIUM = "Medium" + SHORT = "Short" + PIN = "PIN" + NAME = "Name" + PHRASE = "Phrase" + BASIC = "Basic" + + +_templates: Dict[Template, List[str]] = { + Template.MAXIMUM: [ + "anoxxxxxxxxxxxxxxxxx", + "axxxxxxxxxxxxxxxxxno", + ], + Template.LONG: [ + "CvcvnoCvcvCvcv", + "CvcvCvcvnoCvcv", + "CvcvCvcvCvcvno", + "CvccnoCvcvCvcv", + "CvccCvcvnoCvcv", + "CvccCvcvCvcvno", + "CvcvnoCvccCvcv", + "CvcvCvccnoCvcv", + "CvcvCvccCvcvno", + "CvcvnoCvcvCvcc", + "CvcvCvcvnoCvcc", + "CvcvCvcvCvccno", + "CvccnoCvccCvcv", + "CvccCvccnoCvcv", + "CvccCvccCvcvno", + "CvcvnoCvccCvcc", + "CvcvCvccnoCvcc", + "CvcvCvccCvccno", + "CvccnoCvcvCvcc", + "CvccCvcvnoCvcc", + "CvccCvcvCvccno", + ], + Template.MEDIUM: [ + "CvcnoCvc", + "CvcCvcno", + ], + Template.SHORT: [ + "Cvcn", + ], + Template.PIN: [ + "nnnn", + ], + Template.NAME: [ + "cvccvcvcv", + ], + Template.PHRASE: [ + "cvcc cvc cvccvcv cvc", + "cvc cvccvcvcv cvcv", + "cv cvccv cvc cvcvccv", + ], + Template.BASIC: [ + "aaanaaan", + "aannaaan", + "aaannaaa", + ], +} + +_characters: Dict[str, str] = { + "V": "AEIOU", + "C": "BCDFGHJKLMNPQRSTVWXYZ", + "v": "aeiou", + "c": "bcdfghjklmnpqrstvwxyz", + "A": "AEIOUBCDFGHJKLMNPQRSTVWXYZ", + "a": "AEIOUaeiouBCDFGHJKLMNPQRSTVWXYZbcdfghjklmnpqrstvwxyz", + "n": "0123456789", + "o": "@&%?,=[]_:-+*$#!'^~;()/.", + "x": "AEIOUaeiouBCDFGHJKLMNPQRSTVWXYZbcdfghjklmnpqrstvwxyz0123456789!@#$%^&*()", + " ": " ", +} diff --git a/test/__init__.py b/test/__init__.py new file mode 100644 index 0000000..e69de29 diff --git a/test/spectre_tests.xml b/test/spectre_tests.xml new file mode 100644 index 0000000..ace009f --- /dev/null +++ b/test/spectre_tests.xml @@ -0,0 +1,75 @@ + + + + -1 + Robert Lee Mitchell + banana colored duckling + spectre.app + Long + 1 + Authentication + + + + + + 3 + ReqoCenuXonu1? + + + ⛄ + 1717AA1F9BF5BA56CD0965CDA3D78E6D2E6A1EA8C067A8EA621F3DDAD4A87EB8 + Wewa9$YaqdDaje + + + ⛄ + 351432B8528A5ABECAB768CA95015097DE76FE14C41E10AF36C67DCFB8917E08 + TeweBacg0$Tobe + + + ⛄ + LiheCuwhSerz6) + + + Identification + Name + wesruqori + + + Recovery + Phrase + zowp quy roxzuyu qim + + + Maximum + FB22U#U*LPFWlWxaxK2. + + + Medium + ReqMon0) + + + Basic + FLI88cDK + + + Short + Req8 + + + PIN + 3648 + + + Name + reqmonajo + + + Phrase + re monnu mit jededda + + + 4294967295 + ZurdYoda6:Jogs + + diff --git a/test/test_spectre.py b/test/test_spectre.py new file mode 100644 index 0000000..45d3faf --- /dev/null +++ b/test/test_spectre.py @@ -0,0 +1,45 @@ +from xml.etree.ElementTree import Element, ElementTree + +from spectre.scope import Scope, SimpleScoper +from spectre.spectre import Spectre +from spectre.template import Template + + +def test_example(): + s = Spectre("Robert Lee Mitchell", "banana colored duckling") + pw = s.site("masterpasswordapp.com") + assert pw == "Jejr5[RepuSosp" + + +def test_example2(): + scoper = SimpleScoper("com.jojodev.jolheiser") + s = Spectre("Robert Lee Mitchell", "banana colored duckling", scoper=scoper) + pw = s.site( + "jojodev.com", + scope=Scope.IDENTIFICATION, + template_type=Template.MAXIMUM, + counter=2, + ) + assert pw == "Ig^JIcxD!*)TbefJBi6-" + + +def test_spectre(): + tree = ElementTree(file="test/spectre_tests.xml") + tests = tree.getroot().findall("case") + default = tests[0] + + def get(el: Element, child_name: str) -> str: + child = el.find(child_name) + if child is not None: + return str(child.text) + return default.find(child_name).text + + for test in tests[1:]: + s = Spectre(get(test, "userName"), get(test, "userSecret")) + pw = s.site( + get(test, "siteName"), + scope=Scope[get(test, "keyPurpose").upper()], + counter=int(get(test, "keyCounter")), + template_type=Template[get(test, "resultType").upper()], + ) + assert pw == test.find("result").text