gnu/packages/python-crypto.scm

   1 ;;; GNU Guix --- Functional package management for GNU
   2 ;;; Copyright © 2015 Eric Dvorsak <eric@dvorsak.fr>
   3 ;;; Copyright © 2015, 2016, 2017, 2018, 2019, 2020 Efraim Flashner <efraim@flashner.co.il>
   4 ;;; Copyright © 2015, 2016, 2017, 2019 Leo Famulari <leo@famulari.name>
   5 ;;; Copyright © 2016, 2017, 2020 Marius Bakke <mbakke@fastmail.com>
   6 ;;; Copyright © 2017 Ben Sturmfels <ben@sturm.com.au>
   7 ;;; Copyright © 2016 Sou Bunnbu <iyzsong@gmail.com>
   8 ;;; Copyright © 2015 Cyril Roelandt <tipecaml@gmail.com>
   9 ;;; Copyright © 2014, 2017 Eric Bavier <bavier@member.fsf.org>
  10 ;;; Copyright © 2015, 2016 David Thompson <davet@gnu.org>
  11 ;;; Copyright © 2016, 2017, 2018, 2019, 2020 Tobias Geerinckx-Rice <me@tobias.gr>
  12 ;;; Copyright © 2016, 2017 Nikita <nikita@n0.is>
  13 ;;; Copyright © 2014, 2015 Mark H Weaver <mhw@netris.org>
  14 ;;; Copyright © 2015, 2016, 2017, 2019 Ricardo Wurmus <rekado@elephly.net>
  15 ;;; Copyright © 2016 Danny Milosavljevic <dannym+a@scratchpost.org>
  16 ;;; Copyright © 2016, 2017, 2020 Arun Isaac <arunisaac@systemreboot.net>
  17 ;;; Copyright © 2017 Carlo Zancanaro <carlo@zancanaro.id.au>
  18 ;;; Copyright © 2018 Tomáš Čech <sleep_walker@gnu.org>
  19 ;;; Copyright © 2018 Nicolas Goaziou <mail@nicolasgoaziou.fr>
  20 ;;; Copyright © 2018 Vagrant Cascadian <vagrant@debian.org>
  21 ;;; Copyright © 2018 Nam Nguyen <namn@berkeley.edu>
  22 ;;; Copyright © 2019 Guillaume Le Vaillant <glv@posteo.net>
  23 ;;; Copyright © 2019 Clément Lassieur <clement@lassieur.org>
  24 ;;; Copyright © 2020 Alexandros Theodotou <alex@zrythm.org>
  25 ;;; Copyright © 2020 Justus Winter <justus@sequoia-pgp.org>
  26 ;;; Copyright © 2020 Vinicius Monego <monego@posteo.net>
  27 ;;;
  28 ;;; This file is part of GNU Guix.
  29 ;;;
  30 ;;; GNU Guix is free software; you can redistribute it and/or modify it
  31 ;;; under the terms of the GNU General Public License as published by
  32 ;;; the Free Software Foundation; either version 3 of the License, or (at
  33 ;;; your option) any later version.
  34 ;;;
  35 ;;; GNU Guix is distributed in the hope that it will be useful, but
  36 ;;; WITHOUT ANY WARRANTY; without even the implied warranty of
  37 ;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  38 ;;; GNU General Public License for more details.
  39 ;;;
  40 ;;; You should have received a copy of the GNU General Public License
  41 ;;; along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.
  42
  43 (define-module (gnu packages python-crypto)
  44   #:use-module (guix packages)
  45   #:use-module (guix download)
  46   #:use-module (guix git-download)
  47   #:use-module (guix build-system python)
  48   #:use-module (gnu packages)
  49   #:use-module (gnu packages check)
  50   #:use-module (gnu packages crypto)
  51   #:use-module (gnu packages kerberos)
  52   #:use-module (gnu packages libffi)
  53   #:use-module (gnu packages multiprecision)
  54   #:use-module (gnu packages password-utils)
  55   #:use-module (gnu packages protobuf)
  56   #:use-module (gnu packages python)
  57   #:use-module (gnu packages python-check)
  58   #:use-module (gnu packages python-compression)
  59   #:use-module (gnu packages python-web)
  60   #:use-module (gnu packages python-xyz)
  61   #:use-module (gnu packages swig)
  62   #:use-module (gnu packages time)
  63   #:use-module (gnu packages tls)
  64   #:use-module (gnu packages xml)
  65   #:use-module ((guix licenses) #:prefix license:)
  66   #:use-module (srfi srfi-1))
  67
  68 (define-public python-potr
  69   (package
  70     (name "python-potr")
  71     (version "1.0.2")
  72     (source
  73      (origin
  74        (method git-fetch)
  75        (uri
  76         (git-reference
  77          (url "https://github.com/python-otr/pure-python-otr")
  78          (commit version)))
  79        (file-name
  80         (git-file-name name version))
  81        (sha256
  82         (base32 "1hzw6h01fm216nmipyylgz0zybd80w1xsk12m7djycnhqrnrvvv1"))))
  83     (build-system python-build-system)
  84     (propagated-inputs
  85      `(("python-pycrypto" ,python-pycrypto)))
  86     (synopsis "Python OTR Implementation")
  87     (description "Python OTR is an Off-The-Record Protocol Implementation in
  88 Python.  It does not bind to libotr.")
  89     (home-page "https://github.com/python-otr/pure-python-otr")
  90     (license license:lgpl3+)))
  91
  92 (define-public python-base58
  93   (package
  94     (name "python-base58")
  95     (version "2.0.1")
  96     (source
  97      (origin
  98        (method url-fetch)
  99        (uri (pypi-uri "base58" version))
 100        (sha256
 101         (base32
 102          "0yfaqp76kbdb62hikr5n4jkkfjfmii89grwfy6sw3fmsv5hrap1n"))))
 103     (build-system python-build-system)
 104     (native-inputs
 105      `(("python-pyhamcrest" ,python-pyhamcrest)))
 106     (home-page "https://github.com/keis/base58")
 107     (synopsis "Base58 and Base58Check implementation")
 108     (description "Base58 and Base58Check implementation compatible
 109 with what is used by the Bitcoin network.")
 110     (license license:expat)))
 111
 112 (define-public python-bcrypt
 113   (package
 114     (name "python-bcrypt")
 115     (version "3.1.7")
 116     (source
 117      (origin
 118        (method url-fetch)
 119        (uri (pypi-uri "bcrypt" version))
 120        (sha256
 121         (base32 "0hhywhxx301cxivgxrpslrangbfpccc8y83qbwn1f57cab3nj00b"))))
 122     (build-system python-build-system)
 123     (native-inputs
 124      `(("python-pycparser" ,python-pycparser)
 125        ("python-pytest" ,python-pytest)))
 126     (propagated-inputs
 127      `(("python-cffi" ,python-cffi)
 128        ("python-six" ,python-six)))
 129     (home-page "https://github.com/pyca/bcrypt/")
 130     (synopsis
 131      "Modern password hashing library")
 132     (description
 133      "Bcrypt is a Python module which provides a password hashing method based
 134 on the Blowfish password hashing algorithm, as described in
 135 @url{http://static.usenix.org/events/usenix99/provos.html,\"A Future-Adaptable
 136 Password Scheme\"} by Niels Provos and David Mazieres.")
 137     (license license:asl2.0)))
 138
 139 (define-public python2-bcrypt
 140   (package-with-python2 python-bcrypt))
 141
 142 (define-public python-passlib
 143   (package
 144     (name "python-passlib")
 145     (version "1.7.4")
 146     (source
 147      (origin
 148        (method url-fetch)
 149        (uri (pypi-uri "passlib" version))
 150        (sha256
 151         (base32 "015y5qaw9qnxr29lg60dml1g5rbqd4586wy5n8m41ib55gvm1zfy"))))
 152     (build-system python-build-system)
 153     (native-inputs
 154      `(("python-nose" ,python-nose)))
 155     (propagated-inputs
 156      `(("python-py-bcrypt" ,python-py-bcrypt)))
 157     (arguments
 158      `(#:phases
 159        (modify-phases %standard-phases
 160          (add-before 'check 'set-PYTHON_EGG_CACHE
 161            ;; Some tests require access to "$HOME/.cython".
 162            (lambda _ (setenv "PYTHON_EGG_CACHE" "/tmp") #t)))))
 163     (home-page "https://bitbucket.org/ecollins/passlib")
 164     (synopsis "Comprehensive password hashing framework")
 165     (description
 166      "Passlib is a password hashing library for Python 2 & 3, which provides
 167 cross-platform implementations of over 30 password hashing algorithms, as well
 168 as a framework for managing existing password hashes.  It's designed to be
 169 useful for a wide range of tasks, from verifying a hash found in /etc/shadow,
 170 to providing full-strength password hashing for multi-user application.")
 171     (license license:bsd-3)))
 172
 173 (define-public python2-passlib
 174   (package-with-python2 python-passlib))
 175
 176 (define-public python-py-bcrypt
 177   (package
 178     (name "python-py-bcrypt")
 179     (version "0.4")
 180     (source
 181      (origin
 182        (method url-fetch)
 183        (uri (pypi-uri "py-bcrypt" version))
 184        (sha256
 185         (base32
 186          "0y6smdggwi5s72v6p1nn53dg6w05hna3d264cq6kas0lap73p8az"))))
 187     (build-system python-build-system)
 188     (home-page "https://code.google.com/p/py-bcrypt")
 189     (synopsis
 190      "Bcrypt password hashing and key derivation")
 191     (description
 192      "A python wrapper of OpenBSD's Blowfish password hashing code.  This
 193 system hashes passwords using a version of Bruce Schneier's Blowfish block
 194 cipher with modifications designed to raise the cost of off-line password
 195 cracking and frustrate fast hardware implementation.  The computation cost of
 196 the algorithm is parametrised, so it can be increased as computers get faster.
 197 The intent is to make a compromise of a password database less likely to
 198 result in an attacker gaining knowledge of the plaintext passwords (e.g. using
 199 John the Ripper).")
 200     ;; "sha2.c" is under BSD-3;
 201     ;; "blowfish.c" and "bcrypt.c" are under BSD-4;
 202     ;; the rest is under ISC.
 203     (license (list license:isc license:bsd-3 license:bsd-4))))
 204
 205 (define-public python2-py-bcrypt
 206   (package-with-python2 python-py-bcrypt))
 207
 208 (define-public python-pyblake2
 209   (package
 210     (name "python-pyblake2")
 211     (version "1.1.2")
 212     (source
 213      (origin
 214        (method url-fetch)
 215        (uri (pypi-uri "pyblake2" version))
 216        (sha256
 217         (base32
 218          "0gz9hgznv5zw4qjq43xa56y0yikimx30gffvibxzm0nv5sq7xk2w"))))
 219     (build-system python-build-system)
 220     (home-page "https://github.com/dchest/pyblake2")
 221     (synopsis "BLAKE2 hash function for Python")
 222     (description "BLAKE2 is a cryptographic hash function, which offers
 223 stronger security while being as fast as MD5 or SHA-1, and comes in two
 224 flavors: @code{BLAKE2b}, optimized for 64-bit platforms and produces digests
 225 of any size between 1 and 64 bytes, and @code{BLAKE2s}, optimized for 8- to
 226 32-bit platforms and produces digests of any size between 1 and 32 bytes.
 227
 228 This package provides a Python interface for BLAKE2.")
 229     ;; The COPYING file declares it as public domain, with the option to
 230     ;; alternatively use and redistribute it under a variety of permissive
 231     ;; licenses. cc0 is explicitly mentioned in setup.py and pyblake2module.c.
 232     (license (list license:public-domain license:cc0))))
 233
 234 (define-public python-paramiko
 235   (package
 236     (name "python-paramiko")
 237     (version "2.7.2")
 238     (source
 239      (origin
 240        (method url-fetch)
 241        (uri (pypi-uri "paramiko" version))
 242        (sha256
 243         (base32 "0dahwq623jnna7gsr9j0mkwr9k2n1pvkapjryhcx508d5jxg8dkz"))))
 244     (build-system python-build-system)
 245     (arguments
 246      `(;; FIXME: Tests require many unpackaged libraries, see dev-requirements.txt.
 247        #:tests? #f))
 248     (propagated-inputs
 249      `(("python-bcrypt" ,python-bcrypt)
 250        ("python-pyasn1" ,python-pyasn1)
 251        ("python-pynacl" ,python-pynacl)
 252        ("python-cryptography" ,python-cryptography)))
 253     (home-page "https://www.paramiko.org/")
 254     (synopsis "SSHv2 protocol library")
 255     (description "Paramiko is a python implementation of the SSHv2 protocol,
 256 providing both client and server functionality.  While it leverages a Python C
 257 extension for low level cryptography (PyCrypto), Paramiko itself is a pure
 258 Python interface around SSH networking concepts.")
 259     (license license:lgpl2.1+)))
 260
 261 (define-public python2-paramiko
 262   (package-with-python2 python-paramiko))
 263
 264 (define-public python-ecdsa
 265   (package
 266     (name "python-ecdsa")
 267     (version "0.14.1")
 268     (source
 269      (origin
 270        (method url-fetch)
 271        (uri (pypi-uri "ecdsa" version))
 272        (sha256
 273         (base32 "13nx5cbfxc0gnax5zwdmp9xc40qd1llk62mv85jyrvqkbw017ik4"))))
 274     (build-system python-build-system)
 275     (arguments
 276      '(#:phases
 277        (modify-phases %standard-phases
 278          (replace 'check
 279            (lambda _ (invoke "pytest"))))))
 280     (propagated-inputs
 281      `(("python-six" ,python-six)))
 282     (native-inputs
 283      `(("openssl" ,openssl)
 284        ("python-pytest" ,python-pytest)))
 285     (home-page "https://github.com/warner/python-ecdsa")
 286     (synopsis "ECDSA cryptographic signature library (pure python)")
 287     (description
 288      "This is an easy-to-use implementation of ECDSA cryptography (Elliptic
 289 Curve Digital Signature Algorithm), implemented purely in Python.  With this
 290 library, you can quickly create key pairs (signing key and verifying key), sign
 291 messages, and verify the signatures.  The keys and signatures are very short,
 292 making them easy to handle and incorporate into other protocols.")
 293     (license license:expat)))
 294
 295 (define-public python2-ecdsa
 296   (package-with-python2 python-ecdsa))
 297
 298 ;;; Pycrypto is abandoned upstream:
 299 ;;;
 300 ;;; https://github.com/dlitz/pycrypto/issues/173
 301 ;;;
 302 ;;; TODO Remove this package from GNU Guix.
 303 (define-public python-pycrypto
 304   (package
 305     (name "python-pycrypto")
 306     (version "2.6.1")
 307     (source
 308      (origin
 309       (method url-fetch)
 310       (uri (pypi-uri "pycrypto" version))
 311       (patches (search-patches "python-pycrypto-CVE-2013-7459.patch"
 312                                "python-pycrypto-time-clock.patch"))
 313       (sha256
 314        (base32
 315         "0g0ayql5b9mkjam8hym6zyg6bv77lbh66rv1fyvgqb17kfc1xkpj"))))
 316     (build-system python-build-system)
 317     (inputs
 318      `(("python" ,python)
 319        ("gmp" ,gmp)))
 320     (arguments
 321      `(#:phases
 322        (modify-phases %standard-phases
 323          (add-before 'build 'set-build-env
 324            ;; pycrypto runs an autoconf configure script behind the scenes
 325            (lambda _ (setenv "CONFIG_SHELL" (which "bash")) #t)))))
 326     (home-page "https://www.dlitz.net/software/pycrypto/")
 327     (synopsis "Cryptographic modules for Python")
 328     (description
 329      "Pycrypto is a collection of both secure hash functions (such as SHA256
 330 and RIPEMD160), and various encryption algorithms (AES, DES, RSA, ElGamal,
 331 etc.).  The package is structured to make adding new modules easy.")
 332     (license license:public-domain)))
 333
 334 (define-public python2-pycrypto
 335   (let ((pycrypto (package-with-python2 python-pycrypto)))
 336     (package (inherit pycrypto)
 337       (inputs
 338        `(("python" ,python-2)
 339          ,@(alist-delete
 340             "python"
 341             (package-inputs pycrypto)))))))
 342
 343 (define-public python-kerberos
 344   (package
 345     (name "python-kerberos")
 346     (version "1.3.0")
 347     (source
 348      (origin
 349        (method url-fetch)
 350        (uri (pypi-uri "kerberos" version))
 351        (sha256
 352         (base32
 353          "19663qxmma0i8bfbjc2iwy5hgq0g4pfb75r023v5dps68zfvffgh"))))
 354     (build-system python-build-system)
 355     (inputs
 356      `(("mit-krb5" ,mit-krb5)))
 357     (home-page "https://github.com/apple/ccs-pykerberos")
 358     (synopsis
 359      "Python Kerberos library used by CalendarServer")
 360     (description
 361      "This Python package is a high-level wrapper for Kerberos (GSSAPI)
 362 operations.  The goal is to avoid having to build a module that wraps the
 363 entire Kerberos.framework, and instead offer a limited set of functions that
 364 do what is needed for client/server Kerberos authentication based on
 365 <http://www.ietf.org/rfc/rfc4559.txt>.")
 366     (license license:asl2.0)))
 367
 368 (define-public python-keyring
 369   (package
 370     (name "python-keyring")
 371     (version "21.0.0")
 372     (source
 373      (origin
 374       (method url-fetch)
 375       (uri (pypi-uri "keyring" version))
 376       (sha256
 377        (base32
 378         "1k0w3yh3fz0qp0cvkxdiinq9jzbrnc6bd88qpjz34x3cgcr94psz"))
 379       (modules '((guix build utils)))
 380       (snippet
 381         ;; https://github.com/jaraco/keyring/issues/414
 382        '(begin (substitute* "tests/test_packaging.py"
 383                  (("ep, =") "(ep,) =")) #t))))
 384     (build-system python-build-system)
 385     (arguments
 386      `(#:phases
 387        (modify-phases %standard-phases
 388          (replace 'check
 389            (lambda _
 390              ;; Not clear why this test fails.
 391              (delete-file "tests/test_packaging.py")
 392              (substitute* "pytest.ini"
 393                (("--black ") ""))
 394              (invoke "pytest"))))))
 395     (native-inputs
 396      `(("python-pytest" ,python-pytest)
 397        ("python-pytest-checkdocs" ,python-pytest-checkdocs)
 398        ("python-pytest-cov" ,python-pytest-cov)
 399        ("python-pytest-flake8" ,python-pytest-flake8)
 400        ("python-setuptools-scm" ,python-setuptools-scm)))
 401     (propagated-inputs
 402      `(("python-importlib-metadata" ,python-importlib-metadata)
 403        ("python-secretstorage" ,python-secretstorage)))
 404     (home-page "https://github.com/jaraco/keyring")
 405     (synopsis "Store and access your passwords safely")
 406     (description
 407      "The Python keyring lib provides a easy way to access the system keyring
 408 service from python.  It can be used in any application that needs safe
 409 password storage.")
 410     ;; "MIT" and PSF dual license
 411     (properties `((python2-variant . ,(delay python2-keyring))))
 412     (license license:x11)))
 413
 414 (define-public python2-keyring
 415   (let ((keyring (package-with-python2
 416                    (strip-python2-variant python-keyring))))
 417     (package
 418       (inherit keyring)
 419       (name "python2-keyring")
 420       (version "8.7")
 421       (source
 422         (origin
 423           (method url-fetch)
 424           (uri (pypi-uri "keyring" version))
 425           (sha256
 426            (base32
 427             "0482rmi2x6p78wl2kz8qzyq21xz1sbbfwnv5x7dggar4vkwxhzfx"))))
 428       (arguments
 429        `(#:python ,python-2))
 430       (native-inputs
 431        `(("python2-pytest" ,python2-pytest)
 432          ("python2-pytest-runner" ,python2-pytest-runner)
 433          ("python2-setuptools-scm" ,python2-setuptools-scm)))
 434       (propagated-inputs
 435        `(("python2-pycrypto" ,python2-pycrypto))))))
 436
 437 (define-public python-keyrings.alt
 438   (package
 439     (name "python-keyrings.alt")
 440     (version "3.4.0")
 441     (source
 442       (origin
 443         (method url-fetch)
 444         (uri (pypi-uri "keyrings.alt" version))
 445         (sha256
 446          (base32
 447           "0gdjdqpq2hf770p6iwi891mil0vbsdhvy88x0v8b2w4y4b28lcli"))
 448         (modules '((guix build utils)))
 449         (snippet
 450          '(begin
 451             (delete-file "keyrings/alt/_win_crypto.py")
 452             ;; Rely on python-keyring>20:
 453             ;; https://github.com/jaraco/keyrings.alt/issues/33
 454             (substitute* '("keyrings/alt/tests/test_Gnome.py"
 455                            "keyrings/alt/tests/test_Google.py"
 456                            "keyrings/alt/tests/test_Windows.py"
 457                            "keyrings/alt/tests/test_file.py"
 458                            "keyrings/alt/tests/test_pyfs.py")
 459               (("keyring.tests.test_backend") "keyring.testing.backend")
 460               (("keyring.tests.util") "keyring.testing.util"))
 461             #t))))
 462     (build-system python-build-system)
 463     (native-inputs
 464      `(("python-keyring" ,python-keyring)
 465        ("python-pytest" ,python-pytest)
 466        ("python-setuptools-scm" ,python-setuptools-scm)))
 467     (home-page "https://github.com/jaraco/keyrings.alt")
 468     (synopsis "Alternate keyring implementations")
 469     (description "Keyrings in this package may have security risks or other
 470 implications.  These backends were extracted from the main keyring project to
 471 make them available for those who wish to employ them, but are discouraged for
 472 general production use.  Include this module and use its backends at your own
 473 risk.")
 474     (license license:expat)))
 475
 476 (define-public python-certifi
 477   (package
 478     (name "python-certifi")
 479     (version "2020.11.8")
 480     (source (origin
 481               (method url-fetch)
 482               (uri (pypi-uri "certifi" version))
 483               (sha256
 484                (base32
 485                 "1x4w18gm71dbwys5g2mbcnbw27b3dvphj5d56icg5ys45h4yypgh"))))
 486     (build-system python-build-system)
 487     (arguments '(#:tests? #f))          ;no tests
 488     (home-page "https://certifi.io/")
 489     (synopsis "Python CA certificate bundle")
 490     (description
 491      "Certifi is a Python library that contains a CA certificate bundle, which
 492 is used by the Requests library to verify HTTPS requests.")
 493     (license license:asl2.0)))
 494
 495 (define-public python2-certifi
 496   (package-with-python2 python-certifi))
 497
 498 (define-public python-cryptography-vectors
 499   (package
 500     (name "python-cryptography-vectors")
 501     (version "3.1.1")
 502     (source
 503      (origin
 504        (method url-fetch)
 505        (uri (pypi-uri "cryptography_vectors" version))
 506        (sha256
 507         (base32
 508          "1xp2j79c1y8qj4b97ygx451gzp8l4cp830hnvg3zw8j134bcaaam"))))
 509     (build-system python-build-system)
 510     (home-page "https://github.com/pyca/cryptography")
 511     (synopsis "Test vectors for the cryptography package")
 512     (description
 513       "This package contains test vectors for the cryptography package.")
 514     ;; Distributed under either BSD-3 or ASL2.0
 515     (license (list license:bsd-3 license:asl2.0))))
 516
 517 (define-public python2-cryptography-vectors
 518   (package-with-python2 python-cryptography-vectors))
 519
 520 (define-public python-cryptography
 521   (package
 522     (name "python-cryptography")
 523     (version "3.1.1")
 524     (source
 525      (origin
 526        (method url-fetch)
 527        (uri (pypi-uri "cryptography" version))
 528        (sha256
 529         (base32
 530          "0z81q4d1nangw3r0v5f41mfl4d9r04qnbayl5ll5v5jpcfhwd7wx"))))
 531     (build-system python-build-system)
 532     (inputs
 533      `(("openssl" ,openssl)))
 534     (propagated-inputs
 535      `(("python-asn1crypto" ,python-asn1crypto)
 536        ("python-cffi" ,python-cffi)
 537        ("python-six" ,python-six)
 538        ("python-idna" ,python-idna)
 539        ("python-iso8601" ,python-iso8601)))
 540     (native-inputs
 541      `(("python-cryptography-vectors" ,python-cryptography-vectors)
 542        ("python-hypothesis" ,python-hypothesis)
 543        ("python-pretend" ,python-pretend)
 544        ("python-pytz" ,python-pytz)
 545        ("python-pytest" ,python-pytest)))
 546     (home-page "https://github.com/pyca/cryptography")
 547     (synopsis "Cryptographic recipes and primitives for Python")
 548     (description
 549       "cryptography is a package which provides cryptographic recipes and
 550 primitives to Python developers.  It aims to be the “cryptographic standard
 551 library” for Python.  The package includes both high level recipes, and low
 552 level interfaces to common cryptographic algorithms such as symmetric ciphers,
 553 message digests and key derivation functions.")
 554     ;; Distributed under either BSD-3 or ASL2.0
 555     (license (list license:bsd-3 license:asl2.0))
 556     (properties `((python2-variant . ,(delay python2-cryptography))))))
 557
 558 (define-public python2-cryptography
 559   (let ((crypto (package-with-python2
 560                  (strip-python2-variant python-cryptography))))
 561     (package (inherit crypto)
 562       (propagated-inputs
 563        `(("python2-ipaddress" ,python2-ipaddress)
 564          ("python2-backport-ssl-match-hostname"
 565           ,python2-backport-ssl-match-hostname)
 566          ("python2-enum34" ,python2-enum34)
 567          ,@(package-propagated-inputs crypto))))))
 568
 569 (define-public python-pyopenssl
 570   (package
 571     (name "python-pyopenssl")
 572     (version "19.1.0")
 573     (source
 574      (origin
 575        (method url-fetch)
 576        (uri (pypi-uri "pyOpenSSL" version))
 577        (sha256
 578         (base32
 579          "01wmsq6w0frzbr3zps4ga9kmqjidp2h317jwpq1g9ah24r5lj94s"))))
 580     (build-system python-build-system)
 581     (arguments
 582      '(#:phases
 583        (modify-phases %standard-phases
 584          (delete 'check)
 585          (add-after 'install 'check
 586            (lambda* (#:key inputs outputs #:allow-other-keys)
 587              (add-installed-pythonpath inputs outputs)
 588              ;; PyOpenSSL runs tests against a certificate with a fixed
 589              ;; expiry time.  To ensure successful builds in the future,
 590              ;; set the time to roughly the release date.
 591              (invoke "faketime" "2019-01-01" "py.test" "-v" "-k"
 592                      (string-append
 593                       ;; This test tries to look up certificates from
 594                       ;; the compiled-in default path in OpenSSL, which
 595                       ;; does not exist in the build environment.
 596                       "not test_fallback_default_verify_paths "
 597                       ;; This test attempts to make a connection to
 598                       ;; an external web service.
 599                       "and not test_set_default_verify_paths")))))))
 600     (propagated-inputs
 601      `(("python-cryptography" ,python-cryptography)
 602        ("python-six" ,python-six)))
 603     (inputs
 604      `(("openssl" ,openssl)))
 605     (native-inputs
 606      `(("libfaketime" ,libfaketime)
 607        ("python-flaky" ,python-flaky)
 608        ("python-pretend" ,python-pretend)
 609        ("python-pytest" ,python-pytest)))
 610     (home-page "https://github.com/pyca/pyopenssl")
 611     (synopsis "Python wrapper module around the OpenSSL library")
 612     (description
 613       "PyOpenSSL is a high-level wrapper around a subset of the OpenSSL
 614 library.")
 615     (license license:asl2.0)))
 616
 617 (define-public python2-pyopenssl
 618   (package-with-python2 python-pyopenssl))
 619
 620 (define-public python-ed25519
 621   (package
 622     (name "python-ed25519")
 623     (version "1.4")
 624     (source
 625       (origin
 626         (method url-fetch)
 627         (uri (pypi-uri "ed25519" version))
 628         (sha256
 629           (base32
 630             "0ahx1nkxa0xis3cw0h5c4fpgv8mq4znkq7kajly33lc3317bk499"))))
 631     (build-system python-build-system)
 632     (home-page "https://github.com/warner/python-ed25519")
 633     (synopsis "Ed25519 public-key signatures")
 634     (description "Ed25519 public-key signatures")
 635     (license license:expat)))
 636
 637 (define-public python2-ed25519
 638   (package-with-python2 python-ed25519))
 639
 640 (define-public python-axolotl-curve25519
 641   (package
 642     (name "python-axolotl-curve25519")
 643     (version "0.4.1.post2")
 644     (source
 645      (origin
 646        (method url-fetch)
 647        (uri (pypi-uri "python-axolotl-curve25519" version))
 648        (sha256
 649         (base32
 650          "18v3rfyv7xi26fb97nw1xc0l6x8wi0i4xj8dlq4gblpbjxiac187"))))
 651     (build-system python-build-system)
 652     (home-page "https://github.com/tgalal/python-axolotl-curve25519")
 653     (synopsis "Python wrapper for curve25519 library")
 654     (description "This is a python wrapper for the curve25519 library
 655 with ed25519 signatures.  The C code was pulled from
 656 libaxolotl-android.  At the moment this wrapper is meant for use by
 657 python-axolotl.")
 658     (license (list license:gpl3    ; Most files
 659                    license:bsd-3)))) ; curve/curve25519-donna.c
 660
 661 (define-public python2-axolotl-curve25519
 662   (package-with-python2 python-axolotl-curve25519))
 663
 664 (define-public python-axolotl
 665   (package
 666     (name "python-axolotl")
 667     (version "0.2.3")
 668     (source
 669      (origin
 670        (method url-fetch)
 671        (uri (pypi-uri "python-axolotl" version))
 672        (sha256
 673         (base32
 674          "1bwdp24fmriffwx91aigs9k162albb51iskp23nc939z893q23py"))))
 675     (build-system python-build-system)
 676     (arguments
 677      `(#:phases
 678        (modify-phases %standard-phases
 679          ;; Don't install tests
 680          (add-before 'install 'remove-tests
 681            (lambda _
 682              (for-each delete-file-recursively
 683                        '("axolotl/tests" "build/lib/axolotl/tests"))
 684              #t)))))
 685     (propagated-inputs
 686      `(("python-axolotl-curve25519" ,python-axolotl-curve25519)
 687        ("python-cryptography" ,python-cryptography)
 688        ("python-protobuf" ,python-protobuf)))
 689     (home-page "https://github.com/tgalal/python-axolotl")
 690     (synopsis "Python port of libaxolotl-android")
 691     (description "This is a python port of libaxolotl-android.  This
 692 is a ratcheting forward secrecy protocol that works in synchronous and
 693 asynchronous messaging environments.")
 694     (license license:gpl3)))
 695
 696 (define-public python2-axolotl
 697   (package-with-python2 python-axolotl))
 698
 699 ;; SlowAES isn't compatible with Python 3.
 700 (define-public python2-slowaes
 701   (package
 702     (name "python2-slowaes")
 703     (version "0.1a1")
 704     (source
 705      (origin
 706        (method url-fetch)
 707        (uri (pypi-uri "slowaes" version))
 708        (sha256
 709         (base32
 710          "02dzajm83a7lqgxf6r3hgj64wfmcxz8gs4nvgxpvj5n19kjqlrc3"))))
 711     (build-system python-build-system)
 712     (arguments `(#:python ,python-2))
 713     (home-page "http://code.google.com/p/slowaes/")
 714     (synopsis "Implementation of AES in Python")
 715     (description "This package contains an implementation of AES in Python.
 716 This implementation is slow (hence the project name) but still useful when
 717 faster ones are not available.")
 718     (license license:asl2.0)))
 719
 720 (define-public python-pyaes
 721   (package
 722     (name "python-pyaes")
 723     (version "1.6.1")
 724     (source
 725      (origin
 726        (method url-fetch)
 727        (uri (pypi-uri "pyaes" version))
 728        (sha256
 729         (base32
 730          "13vdaff15k0jyfcss4b4xvfgm8xyv0nrbyw5n1qc7lrqbi0b3h82"))))
 731     (build-system python-build-system)
 732     (home-page "https://github.com/ricmoo/pyaes")
 733     (synopsis "Implementation of AES in Python")
 734     (description "This package contains a pure-Python implementation of the
 735 AES block cipher algorithm and the common modes of operation (CBC, CFB, CTR,
 736 ECB and OFB).")
 737     (license license:expat)))
 738
 739 (define-public python2-pyaes
 740   (package-with-python2 python-pyaes))
 741
 742 (define-public python-asn1crypto
 743   (package
 744     (name "python-asn1crypto")
 745     (version "1.4.0")
 746     (source
 747      (origin
 748        (method git-fetch)
 749        (uri (git-reference
 750              (url "https://github.com/wbond/asn1crypto")
 751              (commit version)))
 752        (file-name (git-file-name name version))
 753        (sha256
 754         (base32
 755          "19abibn6jw20mzi1ln4n9jjvpdka8ygm4m439hplyrdfqbvgm01r"))))
 756     (build-system python-build-system)
 757     (arguments
 758      '(#:phases (modify-phases %standard-phases
 759                   (replace 'check
 760                     (lambda _
 761                       (invoke "python" "run.py" "tests"))))))
 762     (home-page "https://github.com/wbond/asn1crypto")
 763     (synopsis "ASN.1 parser and serializer in Python")
 764     (description "asn1crypto is an ASN.1 parser and serializer with definitions
 765 for private keys, public keys, certificates, CRL, OCSP, CMS, PKCS#3, PKCS#7,
 766 PKCS#8, PKCS#12, PKCS#5, X.509 and TSP.")
 767     (license license:expat)))
 768
 769 (define-public python2-asn1crypto
 770   (package-with-python2 python-asn1crypto))
 771
 772 (define-public python-pynacl
 773   (package
 774     (name "python-pynacl")
 775     (version "1.4.0")
 776     (source
 777      (origin
 778        (method url-fetch)
 779        (uri (pypi-uri "PyNaCl" version))
 780        (modules '((guix build utils)))
 781        (snippet
 782         '(begin
 783            ;; Remove spurious dependency on python-wheel, can be removed
 784            ;; for 1.5.
 785            (substitute* "setup.py"
 786              (("\"wheel\"") ""))
 787            ;; Remove bundled libsodium.
 788            (delete-file-recursively "src/libsodium")
 789            #t))
 790        (sha256
 791         (base32
 792          "01b56hxrbif3hx8l6rwz5kljrgvlbj7shmmd2rjh0hn7974a5sal"))))
 793     (build-system python-build-system)
 794     (arguments
 795      `(#:modules (,@%python-build-system-modules
 796                   (guix build utils)
 797                   (ice-9 ftw)
 798                   (srfi srfi-26))
 799        #:phases
 800        (modify-phases (@ (guix build python-build-system) %standard-phases)
 801          (add-before 'build 'use-system-sodium
 802            (lambda _
 803              (setenv "SODIUM_INSTALL" "system")
 804              #t))
 805          (replace 'check
 806            (lambda _
 807              (let ((build-directory
 808                     (car (scandir "build" (cut string-prefix? "lib" <>)))))
 809                (setenv "PYTHONPATH"
 810                        (string-append "./build/" build-directory ":"
 811                                       (getenv "PYTHONPATH")))
 812                (invoke "pytest" "-vv")))))))
 813     (native-inputs
 814      `(("python-hypothesis" ,python-hypothesis)
 815        ("python-pytest" ,python-pytest)))
 816     (propagated-inputs
 817      `(("python-cffi" ,python-cffi)
 818        ("python-six" ,python-six)
 819        ("libsodium" ,libsodium)))
 820     (home-page "https://github.com/pyca/pynacl/")
 821     (synopsis "Python bindings to libsodium")
 822     (description
 823      "PyNaCl is a Python binding to libsodium, which is a fork of the
 824 Networking and Cryptography library.  These libraries have a stated goal
 825 of improving usability, security and speed.")
 826     (license license:asl2.0)))
 827
 828 (define-public python2-pynacl
 829   (package-with-python2 python-pynacl))
 830
 831 (define-public python2-pgpdump
 832   (package
 833     (name "python2-pgpdump")
 834     (version "1.5")
 835     (source
 836      (origin
 837        (method url-fetch)
 838        (uri (pypi-uri "pgpdump" version))
 839        (sha256
 840         (base32
 841          "0s4nh8h7qsdj2yf29bspjs1zvxd4lcd11r6g11dp7fppgf2h0iqw"))))
 842     (build-system python-build-system)
 843
 844     ;; Currently fails to build with Python 3.
 845     (arguments `(#:python ,python-2))
 846
 847     (home-page "https://github.com/toofishes/python-pgpdump")
 848     (synopsis "Python library for parsing PGP packets")
 849     (description
 850      "Python-pgpdump is an OpenPGP packet parser based on
 851 @uref{http://www.mew.org/~kazu/proj/pgpdump/, pgpdump}.  It notably supports:
 852
 853 @itemize
 854 @item signature packets;
 855 @item public key packets;
 856 @item secret key packets;
 857 @item trust, user ID, and user attribute packets;
 858 @item ASCII-armor decoding and CRC check.
 859 @end itemize\n")
 860     (license license:bsd-3)))
 861
 862 (define-public python2-roca-detect
 863   (package
 864     (name "python2-roca-detect")
 865     (version "1.0.8")
 866     (source
 867      (origin
 868        (method url-fetch)
 869        (uri (pypi-uri "roca-detect" version))
 870        (sha256
 871         (base32
 872          "1di4akyw2lf5r8zfwvyhkilz8jv8g4b66rgaqwfabmjwma6gnw27"))))
 873     (build-system python-build-system)
 874     (native-inputs
 875      ;; TODO: apk_parse_ph4, pyjks
 876      `(("python2-dateutil" ,python2-dateutil)
 877        ("python2-six" ,python2-six)
 878        ("python2-cryptography" ,python2-cryptography)
 879        ("python2-future" ,python2-future)
 880        ("python2-coloredlogs" ,python2-coloredlogs)
 881        ("python2-pgpdump" ,python2-pgpdump)))
 882     (arguments
 883      `(;; Basic testing routine is quite simple and works with Py3
 884        ;; but the rest of the code that processes the different
 885        ;; key formats and extracts the modulus for inspection is
 886        ;; not yet fully py3 ready.
 887        #:python ,python-2))
 888     (home-page "https://github.com/crocs-muni/roca")
 889     (synopsis "ROCA detection tool")
 890     (description
 891      "This tool is related to the paper entitled @i{Return of the
 892 Coppersmith’s Attack: Practical Factorization of Widely Used RSA Moduli}.  It
 893 enables you to test public RSA keys for a presence of the described
 894 vulnerability.  Currently the tool supports the following key formats: X.509
 895 Certificate (DER encoded, PEM encoded), RSA PEM (encoded private key, public
 896 key), SSH public key, ASC-encoded OpenPGP key, APK Android application, LDIFF
 897 file, and more.")
 898     (license license:gpl3)))
 899
 900 (define-public python-blurhash
 901   (package
 902     (name "python-blurhash")
 903     (version "1.1.4")
 904     (source
 905       (origin
 906         ;; Tests not included in pypi release and releases not tagged in git repo.
 907         (method git-fetch)
 908         (uri (git-reference
 909                (url "https://github.com/halcy/blurhash-python")
 910                (commit "22e081ef1c24da1bb5c5eaa2c1d6649724deaef8")))
 911         (file-name (git-file-name name version))
 912         (sha256
 913          (base32
 914           "1qq6mhydlp7q3na4kmaq3871h43wh3pyfyxr4b79bia73wjdylxf"))))
 915     (build-system python-build-system)
 916     (arguments
 917      '(#:phases
 918        (modify-phases %standard-phases
 919          (replace 'check
 920            (lambda _
 921              (delete-file "setup.cfg")
 922              (invoke "pytest"))))))
 923     (native-inputs
 924      `(("python-numpy" ,python-numpy)
 925        ("python-pillow" ,python-pillow)
 926        ("python-pytest" ,python-pytest)))
 927     (home-page "https://github.com/halcy/blurhash-python")
 928     (synopsis
 929      "Pure-Python implementation of the blurhash algorithm")
 930     (description
 931      "Pure-Python implementation of the blurhash algorithm.")
 932     (license license:expat)))
 933
 934 (define-public python-ecpy
 935   (package
 936     (name "python-ecpy")
 937     (version "0.10.0")
 938     (source
 939       (origin
 940         (method url-fetch)
 941         (uri (pypi-uri "ECPy" version))
 942         (sha256
 943           (base32
 944             "1gc3i5s93zq6x1nkaxkq1dvmsc12vmrw0hns9f5s1hcb78ni52c8"))))
 945     (build-system python-build-system)
 946     (propagated-inputs
 947      `(("python-future" ,python-future)))
 948     (home-page "https://github.com/ubinity/ECPy")
 949     (synopsis "Pure Python Elliptic Curve Library")
 950     (description "This package provides a Elliptic Curve Library in pure
 951 Python.")
 952     (license license:asl2.0)))
 953
 954 (define-public python2-ecpy
 955   (package-with-python2 python-ecpy))
 956
 957 (define-public python-josepy
 958   (package
 959     (name "python-josepy")
 960     (version "1.1.0")
 961     (source (origin
 962               (method url-fetch)
 963               (uri (pypi-uri "josepy" version))
 964               (sha256
 965                (base32
 966                 "11khz8malzrv375b27jjkv66z6z6khdx1v5mkkr4vq16gp3n4p7v"))))
 967     (build-system python-build-system)
 968     (arguments
 969      ;; The tests require flake8 >= 3.5, which is not yet packaged.
 970      '(#:tests? #f))
 971     (propagated-inputs
 972      `(("python-cryptography" ,python-cryptography)
 973        ("python-pyopenssl" ,python-pyopenssl)
 974        ("python-six" ,python-six)))
 975 ;; TODO Enable when we have flake8 >= 3.5.
 976 ;    (native-inputs
 977 ;     `(("python-coverage" ,python-coverage)
 978 ;       ("python-flake8" ,python-flake8)
 979 ;       ("python-isort" ,python-isort)
 980 ;       ("python-mock" ,python-mock)
 981 ;       ("python-pytest" ,python-pytest)
 982 ;       ("python-pytest-cov" ,python-pytest-cov)
 983 ;       ("python-pytest-cache" ,python-pytest-cache)
 984 ;       ("python-pytest-flake8" ,python-pytest-flake8)))
 985     (home-page "https://github.com/certbot/josepy")
 986     (synopsis "JOSE protocol implementation in Python")
 987     (description "This package provides a Python implementation of the JOSE
 988 protocol (Javascript Object Signing and Encryption).")
 989     (license license:asl2.0)))
 990
 991 (define-public python2-josepy
 992   (package-with-python2 python-josepy))
 993
 994 (define-public python-pycryptodome
 995   (package
 996     (name "python-pycryptodome")
 997     (version "3.9.9")
 998     (source
 999      (origin
1000        (method url-fetch)
1001        (uri (pypi-uri "pycryptodome" version))
1002        (sha256
1003         (base32
1004          "1i4m74f88qj9ci8rpyzrbk2slmsdj5ipmwdkq6qk24byalm203li"))))
1005     (build-system python-build-system)
1006     (home-page "https://www.pycryptodome.org")
1007     (synopsis "Low-level cryptographic Python library")
1008     (description
1009      "PyCryptodome is a self-contained Python package of low-level
1010 cryptographic primitives.  It's not a wrapper to a separate C library like
1011 OpenSSL.  To the largest possible extent, algorithms are implemented in pure
1012 Python.  Only the pieces that are extremely critical to performance (e.g.,
1013 block ciphers) are implemented as C extensions.
1014
1015 You are expected to have a solid understanding of cryptography and security
1016 engineering to successfully use these primitives.  You must also be able to
1017 recognize that some are obsolete (e.g., TDES) or even insecure (RC4).
1018
1019 It provides many enhancements over the last release of PyCrypto (2.6.1):
1020
1021 @itemize
1022 @item Authenticated encryption modes (GCM, CCM, EAX, SIV, OCB)
1023 @item Accelerated AES on Intel platforms via AES-NI
1024 @item First-class support for PyPy
1025 @item Elliptic curves cryptography (NIST P-256 curve only)
1026 @item Better and more compact API (nonce and iv attributes for ciphers,
1027 automatic generation of random nonces and IVs, simplified CTR cipher mode, and
1028 more)
1029 @item SHA-3 (including SHAKE XOFs) and BLAKE2 hash algorithms
1030 @item Salsa20 and ChaCha20 stream ciphers
1031 @item scrypt and HKDF
1032 @item Deterministic (EC)DSA
1033 @item Password-protected PKCS#8 key containers
1034 @item Shamir’s Secret Sharing scheme
1035 @item Random numbers get sourced directly from the OS (and not from a CSPRNG
1036 in userspace)
1037 @item Cleaner RSA and DSA key generation (largely based on FIPS 186-4)
1038 @item Major clean-ups and simplification of the code base
1039 @end itemize
1040
1041 This package provides drop-in compatibility with PyCrypto.  It is one of two
1042 PyCryptodome variants, the other being python-pycryptodomex.")
1043     (license (list license:bsd-2
1044                    license:public-domain)))) ; code inherited from PyCrypto
1045
1046 (define-public python2-pycryptodome
1047   (package-with-python2 python-pycryptodome))
1048
1049 (define-public python-pycryptodomex
1050   (package (inherit python-pycryptodome)
1051     (name "python-pycryptodomex")
1052     (version (package-version python-pycryptodome))
1053     (source
1054      (origin
1055        (method url-fetch)
1056        (uri (pypi-uri "pycryptodomex" version))
1057        (sha256
1058         (base32 "0lbx4qk3xmwqiidhmkj8qa7bh2lf8bwzg0xjpsh2w5zqjrc7qnvv"))))
1059     (description
1060      "PyCryptodome is a self-contained Python package of low-level
1061 cryptographic primitives.  It's not a wrapper to a separate C library like
1062 OpenSSL.  To the largest possible extent, algorithms are implemented in pure
1063 Python.  Only the pieces that are extremely critical to performance (e.g.,
1064 block ciphers) are implemented as C extensions.
1065
1066 You are expected to have a solid understanding of cryptography and security
1067 engineering to successfully use these primitives.  You must also be able to
1068 recognize that some are obsolete (e.g., TDES) or even insecure (RC4).
1069
1070 It provides many enhancements over the last release of PyCrypto (2.6.1):
1071
1072 @itemize
1073 @item Authenticated encryption modes (GCM, CCM, EAX, SIV, OCB)
1074 @item Accelerated AES on Intel platforms via AES-NI
1075 @item First-class support for PyPy
1076 @item Elliptic curves cryptography (NIST P-256 curve only)
1077 @item Better and more compact API (nonce and iv attributes for ciphers,
1078 automatic generation of random nonces and IVs, simplified CTR cipher mode, and
1079 more)
1080 @item SHA-3 (including SHAKE XOFs) and BLAKE2 hash algorithms
1081 @item Salsa20 and ChaCha20 stream ciphers
1082 @item scrypt and HKDF
1083 @item Deterministic (EC)DSA
1084 @item Password-protected PKCS#8 key containers
1085 @item Shamir’s Secret Sharing scheme
1086 @item Random numbers get sourced directly from the OS (and not from a CSPRNG
1087 in userspace)
1088 @item Cleaner RSA and DSA key generation (largely based on FIPS 186-4)
1089 @item Major clean-ups and simplification of the code base
1090 @end itemize
1091
1092 PyCryptodomex is the stand-alone version of PyCryptodome that no longer
1093 provides drop-in compatibility with PyCrypto.")))
1094
1095 (define-public python-m2crypto
1096   (package
1097     (name "python-m2crypto")
1098     (version "0.35.2")
1099     (source
1100      (origin
1101        (method url-fetch)
1102        (uri (pypi-uri "M2Crypto" version))
1103        (sha256
1104         (base32 "09yirf3w77w6f49q6nxhrjm9c3a4y9s30s1k09chqrw8zdgx8sjc"))))
1105     (build-system python-build-system)
1106     (inputs `(("openssl" ,openssl)))
1107     (native-inputs `(("swig" ,swig)))
1108     (home-page "https://gitlab.com/m2crypto/m2crypto")
1109     (synopsis "Python crypto and TLS toolkit")
1110     (description "@code{M2Crypto} is a complete Python wrapper for OpenSSL
1111 featuring RSA, DSA, DH, EC, HMACs, message digests, symmetric ciphers
1112 (including AES); TLS functionality to implement clients and servers; HTTPS
1113 extensions to Python's httplib, urllib, and xmlrpclib; unforgeable HMAC'ing
1114 AuthCookies for web session management; FTP/TLS client and server; S/MIME;
1115 M2Crypto can also be used to provide TLS for Twisted.  Smartcards supported
1116 through the Engine interface.")
1117     (properties `((python2-variant . ,(delay python2-m2crypto))))
1118     (license license:expat)))
1119
1120 (define-public python2-m2crypto
1121   (let ((m2crypto (package-with-python2
1122                    (strip-python2-variant python-m2crypto))))
1123     (package (inherit m2crypto)
1124              (propagated-inputs
1125               `(("python2-typing" ,python2-typing))))))
1126
1127 (define-public python-pykeepass
1128   (package
1129     (name "python-pykeepass")
1130     (version "3.2.1")
1131     (source
1132      (origin
1133        (method git-fetch)
1134        ;; Source tarball on PyPI doesn't include tests.
1135        (uri (git-reference
1136              (url "https://github.com/libkeepass/pykeepass")
1137              (commit version)))
1138        (file-name (git-file-name name version))
1139        (sha256
1140         (base32 "1symxf4ahylynihnp9z4z3lh2vy65ipvg8s4hjrnn936hcaaxghk"))))
1141     (build-system python-build-system)
1142     (arguments
1143      `(#:phases
1144        (modify-phases %standard-phases
1145          (add-after 'unpack 'make-kdbx-writable
1146            ;; Tests have to write to the .kdbx files in the test directory.
1147            (lambda _
1148              (with-directory-excursion "tests"
1149                (for-each make-file-writable (find-files "."))
1150                #t)))
1151          (add-before 'build 'patch-requirements
1152            (lambda _
1153              ;; Update requirements from dependency==version
1154              ;; to dependency>=version.
1155              (substitute* "setup.py"
1156                (("==") ">="))
1157              #t)))))
1158     (propagated-inputs
1159      `(("python-argon2-cffi" ,python-argon2-cffi)
1160        ("python-construct" ,python-construct)
1161        ("python-dateutil" ,python-dateutil)
1162        ("python-future" ,python-future)
1163        ("python-lxml" ,python-lxml)
1164        ("python-pycryptodomex" ,python-pycryptodomex)))
1165     (home-page "https://github.com/libkeepass/pykeepass")
1166     (synopsis "Python library to interact with keepass databases")
1167     (description
1168      "This library allows you to write entries to a KeePass database.  It
1169 supports KDBX3 and KDBX4.")
1170     ;; There are no copyright headers in the source code.  The LICENSE file
1171     ;; indicates GPL3.
1172     (license license:gpl3+)))
1173
1174 (define-public python-pylibscrypt
1175   (package
1176     (name "python-pylibscrypt")
1177     (version "1.7.1")
1178     (source
1179      (origin
1180        (method url-fetch)
1181        (uri (pypi-uri "pylibscrypt" version))
1182        (sha256
1183         (base32
1184          "1b3rgzl6dbzs08vhv41b6y4n5189wv7lr27acxn104hs45745abs"))))
1185     (build-system python-build-system)
1186     (arguments
1187      `(#:phases
1188        (modify-phases %standard-phases
1189          (add-before 'build 'hard-code-path-to-libscrypt
1190            (lambda* (#:key inputs #:allow-other-keys)
1191              (let ((libscrypt (assoc-ref inputs "libscrypt")))
1192                (substitute* "pylibscrypt/pylibscrypt.py"
1193                  (("find_library\\('scrypt'\\)")
1194                   (string-append "'" libscrypt "/lib/libscrypt.so'")))
1195                #t))))
1196        ;; The library can use various scrypt implementations and tests all of
1197        ;; them.  Since we only provide a single implementation, most tests
1198        ;; fail.  Simply skip them.
1199        #:tests? #f))
1200     ;; FIXME: Using "libscrypt" is the second best choice.  The best one
1201     ;; requires "hashlib.scrypt", provided by Python 3.6+ built with OpenSSL
1202     ;; 1.1+.  Use that as soon as Guix provides it.
1203     (inputs
1204      `(("libscrypt" ,libscrypt)))
1205     (home-page "https://github.com/jvarho/pylibscrypt")
1206     (synopsis "Scrypt for Python")
1207     (description "There are a lot of different scrypt modules for Python, but
1208 none of them have everything that I'd like, so here's one more.  It uses
1209 @code{libscrypt}.")
1210     (license license:isc)))
1211
1212 (define-public python-libnacl
1213   (package
1214     (name "python-libnacl")
1215     (version "1.6.1")
1216     (source
1217      (origin
1218        (method url-fetch)
1219        (uri (pypi-uri "libnacl" version))
1220        (sha256
1221         (base32
1222          "0nv7n8nfswkhl614x5mllrkvaslraa0053q11iylb337cy43vb4v"))))
1223     (build-system python-build-system)
1224     (arguments
1225      `(#:phases
1226        (modify-phases %standard-phases
1227          (add-after 'unpack 'locate-libsodium
1228            (lambda* (#:key inputs #:allow-other-keys)
1229              (substitute* "libnacl/__init__.py"
1230                (("(return ctypes.cdll.LoadLibrary\\(')libsodium.so('\\))"
1231                  _ pre post)
1232                 (let ((libsodium (string-append (assoc-ref inputs "libsodium")
1233                                                 "/lib/libsodium.so")))
1234                   (string-append pre libsodium post)))))))))
1235     (native-inputs
1236      `(("python-pyhamcrest" ,python-pyhamcrest)))
1237     (inputs
1238      `(("libsodium" ,libsodium)))
1239     (home-page "https://libnacl.readthedocs.org/")
1240     (synopsis "Python bindings for libsodium based on ctypes")
1241     (description "@code{libnacl} is used to gain direct access to the
1242 functions exposed by @code{NaCl} library via @code{libsodium}.  It has
1243 been constructed to maintain extensive documentation on how to use
1244 @code{NaCl} as well as being completely portable.")
1245     (license license:asl2.0)))
1246
1247 (define-public python-pyotp
1248   (package
1249     (name "python-pyotp")
1250     (version "2.4.1")
1251     (source
1252      (origin
1253        (method url-fetch)
1254        (uri (pypi-uri "pyotp" version))
1255        (sha256
1256         (base32 "0jsqfmx9i7j8z81r4zazv76xzy1fcq8v9s2r4kvx7ajfndq3z2h3"))))
1257     (build-system python-build-system)
1258     (home-page "https://github.com/pyauth/pyotp")
1259     (synopsis "Python One Time Password Library")
1260     (description
1261      "PyOTP is a Python library for generating and verifying one-time
1262 passwords.  It can be used to implement two-factor (2FA) or multi-factor
1263 (MFA) authentication methods in web applications and in other systems that
1264 require users to log in.")
1265     (license license:expat)))
1266
1267 (define-public python-scrypt
1268   (package
1269     (name "python-scrypt")
1270     (version "0.8.7")
1271     (source
1272      (origin
1273        (method url-fetch)
1274        (uri (pypi-uri "scrypt" version))
1275        (sha256
1276         (base32
1277          "0hjk71k3mgnl8siikm9lii9im8kv0rb7inkjzx78rnancra48xxr"))))
1278     (build-system python-build-system)
1279     (inputs
1280      `(("openssl" ,openssl)))
1281     (home-page "https://bitbucket.org/mhallin/py-scrypt")
1282     (synopsis "Bindings for the scrypt key derivation function library")
1283     (description "This is a set of Python bindings for the scrypt key
1284 derivation function.")
1285     (license license:bsd-2)))
1286
1287 (define-public python-service-identity
1288   (package
1289     (name "python-service-identity")
1290     (version "18.1.0")
1291     (source
1292      (origin
1293        (method url-fetch)
1294        (uri (pypi-uri "service_identity" version))
1295        (sha256
1296         (base32
1297          "0b9f5qiqjy8ralzgwjgkhx82h6h8sa7532psmb8mkd65md5aan08"))))
1298     (build-system python-build-system)
1299     (propagated-inputs
1300      `(("python-attrs" ,python-attrs)
1301        ("python-pyasn1" ,python-pyasn1)
1302        ("python-pyasn1-modules" ,python-pyasn1-modules)
1303        ("python-pyopenssl" ,python-pyopenssl)))
1304     (home-page "https://service-identity.readthedocs.io/")
1305     (synopsis "Service identity verification for PyOpenSSL")
1306     (description
1307      "@code{service_identity} aspires to give you all the tools you need
1308 for verifying whether a certificate is valid for the intended purposes.
1309 In the simplest case, this means host name verification.  However,
1310 service_identity implements RFC 6125 fully and plans to add other
1311 relevant RFCs too.")
1312     (license license:expat)))
1313
1314 (define-public python2-service-identity
1315   (package-with-python2 python-service-identity))
1316
1317 (define-public python-hkdf
1318   (package
1319     (name "python-hkdf")
1320     (version "0.0.3")
1321     (source
1322       (origin
1323         (method url-fetch)
1324         (uri (pypi-uri "hkdf" version))
1325         (sha256
1326          (base32
1327           "1jhxk5vhxmxxjp3zj526ry521v9inzzl8jqaaf0ma65w6k332ak2"))))
1328     (build-system python-build-system)
1329     (native-inputs
1330      `(("python-nose" ,python-nose)))
1331     (home-page "https://github.com/casebeer/python-hkdf")
1332     (synopsis "HMAC-based Extract-and-Expand Key Derivation Function (HKDF)")
1333     (description "This package provides a Python implementation of the HMAC Key
1334 Derivation function (HKDF) defined in RFC 5869.")
1335     (license license:bsd-2)))
1336
1337 (define-public python-spake2
1338   (package
1339     (name "python-spake2")
1340     (version "0.8")
1341     (source
1342       (origin
1343         (method url-fetch)
1344         (uri (pypi-uri "spake2" version))
1345         (sha256
1346          (base32
1347           "1x16r7lrbklvfzbacb66qv9iiih6liq1y612dqh2chgf555n2yn1"))))
1348     (build-system python-build-system)
1349     (propagated-inputs
1350      `(("python-hkdf" ,python-hkdf)))
1351     (home-page "https://github.com/warner/python-spake2")
1352     (synopsis "SPAKE2 password-authenticated key exchange in Python")
1353     (description "This package provides a Python implementation of the SPAKE2
1354 Password-Authenticated Key Exchange algorithm.")
1355     (license license:expat)))
1356
1357 (define-public python-txtorcon
1358   (package
1359     (name "python-txtorcon")
1360     (version "19.0.0")
1361     (source
1362       (origin
1363         (method url-fetch)
1364         (uri (pypi-uri "txtorcon" version))
1365         (sha256
1366          (base32
1367           "0fxzhsc62bhmr730vj9pzallmw56gz6iykvl28a5agrycm0bfc9p"))))
1368     (build-system python-build-system)
1369     (arguments
1370       ;; The tests fail immediately due to a missing file. Reported upstream:
1371       ;; <https://github.com/meejah/txtorcon/issues/330>
1372      `(#:tests? #f))
1373     (propagated-inputs
1374      `(("python-automat" ,python-automat)
1375        ("python-idna" ,python-idna)
1376        ("python-incremental" ,python-incremental)
1377        ("python-service-identity" ,python-service-identity)
1378        ("python-twisted" ,python-twisted)
1379        ("python-zope-interface" ,python-zope-interface)))
1380     (home-page "https://github.com/meejah/txtorcon")
1381     (synopsis "Twisted-based Tor controller client")
1382     (description "This package provides a Twisted-based Tor controller client,
1383 with state-tracking and configuration abstractions.")
1384     (license license:expat)))
1385
1386 (define-public python-keyutils
1387   (package
1388     (name "python-keyutils")
1389     (version "0.6")
1390     (source
1391      (origin
1392        (method url-fetch)
1393        (uri (pypi-uri "keyutils" version))
1394        (sha256
1395         (base32
1396          "0lipygpzhwzzsq2k5imb1jgkmj8y4khxdwhzadjs3bd56g6bmkx9"))))
1397     (build-system python-build-system)
1398     (native-inputs
1399      `(("python-pytest" ,python-pytest)
1400        ("python-pytest-runner" ,python-pytest-runner)))
1401     (inputs
1402      `(("keyutils" ,keyutils)))
1403     (arguments
1404      '(#:tests? #f))
1405     (home-page "https://github.com/sassoftware/python-keyutils")
1406     (synopsis "Python bindings for keyutils")
1407     (description
1408      "This is a set of python bindings for keyutils, a key management suite
1409 that leverages the infrastructure provided by the Linux kernel for safely
1410 storing and retrieving sensitive information in your programs.")
1411     (license license:asl2.0)))
1412
1413 (define-public python-mcuboot-imgtool
1414   (package
1415     (name "python-mcuboot-imgtool")
1416     (version "1.4.0")
1417     (source
1418      (origin
1419        (method git-fetch)
1420        (uri (git-reference
1421              (url "https://github.com/JuulLabs-OSS/mcuboot")
1422              (commit (string-append "v" version))))
1423        (file-name (git-file-name name version))
1424        (sha256
1425         (base32
1426          "1m1csyvzq4jx81zg635ssy1n7sc0z539z0myh872ll3nwqx7wa0q"))))
1427     (build-system python-build-system)
1428     (arguments
1429      `(#:phases
1430        (modify-phases %standard-phases
1431          (add-after 'unpack 'fix-broken-test
1432            (lambda _
1433              (substitute* "scripts/imgtool/keys/ed25519_test.py"
1434                (("raw_sign") "sign_digest"))
1435              #t))
1436          (add-before 'build 'change-directory
1437            (lambda _
1438              (chdir "scripts")
1439              #t)))))
1440     (propagated-inputs
1441      `(("python-click" ,python-click)
1442        ("python-intelhex" ,python-intelhex)
1443        ("python-cryptography" ,python-cryptography)))
1444     (home-page "https://mcuboot.com")
1445     (synopsis "Tool to securely sign firmware images for booting by MCUboot")
1446     (description "MCUboot is a secure bootloader for 32-bit MCUs.  This
1447 package provides a tool to securely sign firmware images for booting by
1448 MCUboot.")
1449     (license license:expat)))
1450
1451 (define-public python-ntlm-auth
1452   (package
1453     (name "python-ntlm-auth")
1454     (version "1.4.0")
1455     (source
1456      (origin
1457        (method url-fetch)
1458        (uri (pypi-uri "ntlm-auth" version))
1459        (sha256
1460         (base32
1461          "16mavidki4ma5ip8srqalr19gz4f5yn3cnmmgps1fmgfr24j63rm"))))
1462     (build-system python-build-system)
1463     (propagated-inputs
1464      `(("python-cryptography" ,python-cryptography)))
1465     (home-page "https://github.com/jborean93/ntlm-auth")
1466     (synopsis
1467      "Calculates NTLM Authentication codes")
1468     (description
1469      "This library handles the low-level details of NTLM authentication for
1470 use in authenticating with a service that uses NTLM.  It will create and parse
1471 the 3 different message types in the order required and produce a base64
1472 encoded value that can be attached to the HTTP header.
1473
1474 The goal of this library is to offer full NTLM support including signing and
1475 sealing of messages as well as supporting MIC for message integrity and the
1476 ability to customise and set limits on the messages sent.  Please see Features
1477 and Backlog for a list of what is and is not currently supported.")
1478     (license license:expat)))
1479
1480 (define-public python-secretstorage
1481   (package
1482     (name "python-secretstorage")
1483     (version "3.1.2")
1484     (source
1485       (origin
1486         (method url-fetch)
1487         (uri (pypi-uri "SecretStorage" version))
1488         (sha256
1489          (base32
1490           "1xmzr0j3066s220bss4nkgqbiwb5k4kkp2rkpqlqwjb5kfc8mnhm"))))
1491     (build-system python-build-system)
1492     (arguments
1493      '(#:tests? #f)) ; Tests require a running dbus service.
1494     (propagated-inputs
1495      `(("python-cryptography" ,python-cryptography)
1496        ("python-jeepney" ,python-jeepney)))
1497     (home-page "https://github.com/mitya57/secretstorage")
1498     (synopsis "Python bindings to FreeDesktop.org Secret Service API")
1499     (description
1500      "@code{python-secretstorage} provides a way for securely storing passwords
1501 and other secrets.  It uses D-Bus Secret Service API that is supported by GNOME
1502 Keyring (since version 2.30) and KSecretsService.  SecretStorage supports most
1503 of the functions provided by Secret Service, including creating and deleting
1504 items and collections, editing items, locking and unlocking collections
1505 (asynchronous unlocking is also supported).")
1506     (license license:bsd-3)))
1507
1508 (define-public python-trustme
1509   (package
1510     (name "python-trustme")
1511     (version "0.6.0")
1512     (source
1513      (origin
1514        (method url-fetch)
1515        (uri (pypi-uri "trustme" version))
1516        (sha256
1517         (base32 "0v3vr5z6apnfmklf07m45kv5kaqvm6hxrkaqywch57bjd2siiywx"))))
1518     (build-system python-build-system)
1519     (arguments
1520      `(#:phases
1521        (modify-phases %standard-phases
1522          (replace 'check
1523            (lambda* (#:key inputs outputs #:allow-other-keys)
1524              (add-installed-pythonpath inputs outputs)
1525              (invoke "pytest" "-vv"))))))
1526     (native-inputs
1527      `(("python-more-itertools" ,python-more-itertools)
1528        ("python-pyopenssl" ,python-pyopenssl)
1529        ("python-pytest" ,python-pytest)
1530        ("python-pytest-cov" ,python-pytest-cov)
1531        ("python-service-identity" ,python-service-identity)
1532        ("python-zipp" ,python-zipp)))
1533     (propagated-inputs
1534      `(("python-cryptography" ,python-cryptography)))
1535     (home-page "https://github.com/python-trio/trustme")
1536     (synopsis "Fake a certificate authority for tests")
1537     (description
1538      "@code{trustme} is a tiny Python package that does one thing: it gives you
1539 a fake certificate authority (CA) that you can use to generate fake TLS certs to
1540 use in your tests.")
1541     ;; Either license applies.
1542     (license (list license:expat license:asl2.0))))
1543
1544 (define-public python-certipy
1545   (package
1546     (name "python-certipy")
1547     (version "0.1.3")
1548     (source
1549       (origin
1550         (method url-fetch)
1551         (uri (pypi-uri "certipy" version))
1552         (sha256
1553          (base32
1554           "0n980gqpzh0fm58h3i4mi2i10wgj606lscm1r5sk60vbf6vh8mv9"))))
1555     (build-system python-build-system)
1556     (propagated-inputs
1557      `(("python-pyopenssl" ,python-pyopenssl)))
1558     (native-inputs
1559      `(("python-pytest" ,python-pytest)))
1560     (home-page "https://github.com/LLNL/certipy")
1561     (synopsis "Utility to create and sign CAs and certificates")
1562     (description
1563      "Certipy was made to simplify the certificate creation process.  To that
1564 end, certipy exposes methods for creating and managing certificate authorities,
1565 certificates, signing and building trust bundles.")
1566     (license license:bsd-3)))
1567
1568 (define-public python-jeepney
1569   (package
1570     (name "python-jeepney")
1571     (version "0.4.3")
1572     (source
1573       (origin
1574         (method url-fetch)
1575         (uri (pypi-uri "jeepney" version))
1576         (sha256
1577          (base32 "0vp3p1lqhqk2kd3254q5sxr50znmm2hmysc8a7g0fr1brihvhy9l"))))
1578     (build-system python-build-system)
1579     (native-inputs
1580      `(("python-testpath" ,python-testpath)
1581        ("python-tornado" ,python-tornado)
1582        ("python-pytest" ,python-pytest)))
1583     (home-page "https://gitlab.com/takluyver/jeepney")
1584     (synopsis "Low-level, pure Python DBus protocol wrapper")
1585     (description
1586      "This is a low-level, pure Python DBus protocol client.  It has an
1587 I/O-free core, and integration modules for different event loops.")
1588     (license license:expat)))
1589
1590 (define-public python-argon2-cffi
1591   (package
1592     (name "python-argon2-cffi")
1593     (version "20.1.0")
1594     (source
1595       (origin
1596         (method url-fetch)
1597         (uri (pypi-uri "argon2-cffi" version))
1598         (sha256
1599          (base32
1600           "0zgr4mnnm0p4i99023safb0qb8cgvl202nly1rvylk2b7qnrn0nq"))
1601         (modules '((guix build utils)))
1602         (snippet '(begin (delete-file-recursively "extras") #t))))
1603     (build-system python-build-system)
1604     (arguments
1605      '(#:phases
1606        (modify-phases %standard-phases
1607          (replace 'build
1608            (lambda _
1609              (setenv "ARGON2_CFFI_USE_SYSTEM" "1")
1610              (invoke "python" "setup.py" "build")))
1611          (replace 'check
1612            (lambda* (#:key inputs outputs #:allow-other-keys)
1613              (add-installed-pythonpath inputs outputs)
1614              (invoke "pytest")
1615              (invoke "python" "-m" "argon2" "--help")
1616              ;; see tox.ini
1617              (invoke "python" "-m" "argon2" "-n" "1" "-t" "1" "-m" "8" "-p" "1"))))))
1618     (propagated-inputs
1619      `(("python-cffi" ,python-cffi)
1620        ("python-six" ,python-six)))
1621     (inputs `(("argon2" ,argon2)))
1622     (native-inputs
1623      `(("python-hypothesis" ,python-hypothesis)
1624        ("python-pytest" ,python-pytest)))
1625     (home-page "https://argon2-cffi.readthedocs.io/")
1626     (synopsis "Secure Password Hashes for Python")
1627     (description
1628      "Argon2 is a secure password hashing algorithm.  It is designed to have
1629 both a configurable runtime as well as memory consumption.  This means that you
1630 can decide how long it takes to hash a password and how much memory is required.")
1631     (license license:expat)))
1632
1633 (define-public python-privy
1634   (package
1635     (name "python-privy")
1636     (version "6.0.0")
1637     (source
1638       (origin
1639         (method git-fetch)
1640         (uri (git-reference
1641                ;; Releases are untagged
1642                (url "https://github.com/ofek/privy")
1643                (commit "2838db3df239797c71bddacc48a4c49a83f35747")))
1644         (file-name (git-file-name name version))
1645         (sha256
1646          (base32
1647           "1m32dh5fqc8cy7jyf1z5fs6zvmdkbq5fi98hr609gbl7s0l0y0i9"))))
1648     (build-system python-build-system)
1649     (arguments
1650      '(#:phases
1651        (modify-phases %standard-phases
1652          (replace 'check
1653            (lambda _
1654              (invoke "python" "-m" "pytest"))))))
1655     (native-inputs
1656      `(("python-pytest" ,python-pytest)))
1657     (propagated-inputs
1658      `(("python-argon2-cffi" ,python-argon2-cffi)
1659        ("python-cryptography" ,python-cryptography)))
1660     (home-page "https://www.dropbox.com/developers")
1661     (synopsis "Library to password-protect your data")
1662     (description
1663      "Privy is a small and fast utility for password-protecting secret
1664 data such as API keys, cryptocurrency wallets, or seeds for digital
1665 signatures.")
1666     (license (list license:expat license:asl2.0)))) ; dual licensed
1667
1668 (define-public python-pgpy
1669   (package
1670     (name "python-pgpy")
1671     (version "0.5.3")
1672     (source
1673       (origin
1674         (method url-fetch)
1675         (uri (pypi-uri "PGPy" version))
1676         (sha256
1677          (base32 "11rrq15gmn6qbahli7czflfcngjl7zyybjlvk732my6axnf2d754"))))
1678     (build-system python-build-system)
1679     (arguments
1680      `(#:phases
1681        (modify-phases %standard-phases
1682          (replace 'check
1683            (lambda* (#:key tests? #:allow-other-keys)
1684              (when tests?
1685                (invoke "pytest")))))))
1686     (native-inputs
1687      `(("python-cryptography" ,python-cryptography)
1688        ("python-pyasn1" ,python-pyasn1)
1689        ("python-pytest" ,python-pytest)
1690        ("python-singledispatch" ,python-singledispatch)
1691        ("python-six" ,python-six)
1692        ("python-wheel" ,python-wheel)))
1693     (home-page "https://github.com/SecurityInnovation/PGPy")
1694     (synopsis "Python implementation of OpenPGP")
1695     (description
1696      "Currently, PGPy can load keys and signatures of all kinds in both ASCII
1697 armored and binary formats.
1698
1699 It can create and verify RSA, DSA, and ECDSA signatures, at the moment.  It
1700 can also encrypt and decrypt messages using RSA and ECDH.")
1701     (license license:bsd-3)))
1702
1703 (define-public python-sop
1704   (package
1705     (name "python-sop")
1706     (version "0.2.0")
1707     (source
1708       (origin
1709         (method url-fetch)
1710         (uri (pypi-uri "sop" version))
1711         (sha256
1712          (base32
1713           "0gljyjsdn6hdmwlwwb5g5s0c031p6izamvfxp0d39x60af8k5jyf"))))
1714     (build-system python-build-system)
1715     (arguments
1716      '(#:tests? #f)) ; There are no tests, and unittest throws an error trying
1717                      ; to find some:
1718                      ;     TypeError: don't know how to make test from: 0.2.0
1719     (home-page "https://gitlab.com/dkg/python-sop")
1720     (synopsis "Stateless OpenPGP Command-Line Interface")
1721     (description
1722      "The Stateless OpenPGP Command-Line Interface (or sop) is a
1723 specification that encourages OpenPGP implementors to provide a common,
1724 relatively simple command-line API for purposes of object security.
1725
1726 This Python module helps implementers build such a CLI from any implementation
1727 accessible to the Python interpreter.
1728
1729 It does not provide such an implementation itself -- this is just the
1730 scaffolding for the command line, which should make it relatively easy to
1731 supply a handful of python functions as methods to a class.")
1732     (license license:expat))) ; MIT license