;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2015 Eric Dvorsak <eric@dvorsak.fr>
;;; Copyright © 2015, 2016, 2017, 2018, 2019 Efraim Flashner <efraim@flashner.co.il>
;;; Copyright © 2015, 2016, 2017, 2019 Leo Famulari <leo@famulari.name>
;;; Copyright © 2016, 2017 Marius Bakke <mbakke@fastmail.com>
;;; Copyright © 2017 Ben Sturmfels <ben@sturm.com.au>
;;; Copyright © 2016 Sou Bunnbu <iyzsong@gmail.com>
;;; Copyright © 2015 Cyril Roelandt <tipecaml@gmail.com>
;;; Copyright © 2014, 2017 Eric Bavier <bavier@member.fsf.org>
;;; Copyright © 2015, 2016 David Thompson <davet@gnu.org>
;;; Copyright © 2016, 2017, 2018, 2019 Tobias Geerinckx-Rice <me@tobias.gr>
;;; Copyright © 2016, 2017 ng0 <ng0@n0.is>
;;; Copyright © 2014, 2015 Mark H Weaver <mhw@netris.org>
;;; Copyright © 2015, 2016, 2017, 2019 Ricardo Wurmus <rekado@elephly.net>
;;; Copyright © 2016 Danny Milosavljevic <dannym+a@scratchpost.org>
;;; Copyright © 2016, 2017 Arun Isaac <arunisaac@systemreboot.net>
;;; Copyright © 2017 Carlo Zancanaro <carlo@zancanaro.id.au>
;;; Copyright © 2018 Tomáš Čech <sleep_walker@gnu.org>
;;; Copyright © 2018 Nicolas Goaziou <mail@nicolasgoaziou.fr>
;;; Copyright © 2018 Vagrant Cascadian <vagrant@debian.org>
;;; Copyright © 2018 Nam Nguyen <namn@berkeley.edu>
;;; Copyright © 2019 Guillaume Le Vaillant <glv@posteo.net>
;;; Copyright © 2019 Clément Lassieur <clement@lassieur.org>
;;;
;;; This file is part of GNU Guix.
;;;
;;; GNU Guix is free software; you can redistribute it and/or modify it
;;; under the terms of the GNU General Public License as published by
;;; the Free Software Foundation; either version 3 of the License, or (at
;;; your option) any later version.
;;;
;;; GNU Guix is distributed in the hope that it will be useful, but
;;; WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;;; GNU General Public License for more details.
;;;
;;; You should have received a copy of the GNU General Public License
;;; along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.

(define-module (gnu packages python-crypto)
  #:use-module (guix packages)
  #:use-module (guix download)
  #:use-module (guix git-download)
  #:use-module (guix build-system python)
  #:use-module (gnu packages)
  #:use-module (gnu packages check)
  #:use-module (gnu packages crypto)
  #:use-module (gnu packages libffi)
  #:use-module (gnu packages multiprecision)
  #:use-module (gnu packages protobuf)
  #:use-module (gnu packages python)
  #:use-module (gnu packages python-web)
  #:use-module (gnu packages python-xyz)
  #:use-module (gnu packages time)
  #:use-module (gnu packages tls)
  #:use-module ((guix licenses) #:prefix license:)
  #:use-module (srfi srfi-1))

(define-public python-base58
  (package
    (name "python-base58")
    (version "1.0.3")
    (source
     (origin
       (method url-fetch)
       (uri (pypi-uri "base58" version))
       (sha256
        (base32
         "0q1yr0n5jaf17xq98m7dma6z4rh8p19ch55l1s09gi3rk5ckqycs"))))
    (build-system python-build-system)
    (native-inputs
     `(("python-pyhamcrest" ,python-pyhamcrest)))
    (home-page "https://github.com/keis/base58")
    (synopsis "Base58 and Base58Check implementation")
    (description "Base58 and Base58Check implementation compatible
with what is used by the Bitcoin network.")
    (license license:expat)))

(define-public python-bcrypt
  (package
    (name "python-bcrypt")
    (version "3.1.7")
    (source
     (origin
       (method url-fetch)
       (uri (pypi-uri "bcrypt" version))
       (sha256
        (base32 "0hhywhxx301cxivgxrpslrangbfpccc8y83qbwn1f57cab3nj00b"))))
    (build-system python-build-system)
    (native-inputs
     `(("python-pycparser" ,python-pycparser)
       ("python-pytest" ,python-pytest)))
    (propagated-inputs
     `(("python-cffi" ,python-cffi)
       ("python-six" ,python-six)))
    (home-page "https://github.com/pyca/bcrypt/")
    (synopsis
     "Modern password hashing library")
    (description
     "Bcrypt is a Python module which provides a password hashing method based
on the Blowfish password hashing algorithm, as described in
@url{http://static.usenix.org/events/usenix99/provos.html,\"A Future-Adaptable
Password Scheme\"} by Niels Provos and David Mazieres.")
    (license license:asl2.0)))

(define-public python2-bcrypt
  (package-with-python2 python-bcrypt))

(define-public python-passlib
  (package
    (name "python-passlib")
    (version "1.7.2")
    (source
     (origin
       (method url-fetch)
       (uri (pypi-uri "passlib" version))
       (sha256
        (base32 "1a5ngap7kq0b4azq8nlfg6xg5bcl1i0v1sbynhmbr631jgpnqrld"))))
    (build-system python-build-system)
    (native-inputs
     `(("python-nose" ,python-nose)))
    (propagated-inputs
     `(("python-py-bcrypt" ,python-py-bcrypt)))
    (arguments
     `(#:phases
       (modify-phases %standard-phases
         (add-before 'check 'set-PYTHON_EGG_CACHE
           ;; some tests require access to "$HOME/.cython"
           (lambda* _ (setenv "PYTHON_EGG_CACHE" "/tmp") #t)))))
    (home-page "https://bitbucket.org/ecollins/passlib")
    (synopsis "Comprehensive password hashing framework")
    (description
     "Passlib is a password hashing library for Python 2 & 3, which provides
cross-platform implementations of over 30 password hashing algorithms, as well
as a framework for managing existing password hashes.  It's designed to be
useful for a wide range of tasks, from verifying a hash found in /etc/shadow,
to providing full-strength password hashing for multi-user application.")
    (license license:bsd-3)))

(define-public python2-passlib
  (package-with-python2 python-passlib))

(define-public python-py-bcrypt
  (package
    (name "python-py-bcrypt")
    (version "0.4")
    (source
     (origin
       (method url-fetch)
       (uri (pypi-uri "py-bcrypt" version))
       (sha256
        (base32
         "0y6smdggwi5s72v6p1nn53dg6w05hna3d264cq6kas0lap73p8az"))))
    (build-system python-build-system)
    (home-page "https://code.google.com/p/py-bcrypt")
    (synopsis
     "Bcrypt password hashing and key derivation")
    (description
     "A python wrapper of OpenBSD's Blowfish password hashing code.  This
system hashes passwords using a version of Bruce Schneier's Blowfish block
cipher with modifications designed to raise the cost of off-line password
cracking and frustrate fast hardware implementation.  The computation cost of
the algorithm is parametrised, so it can be increased as computers get faster.
The intent is to make a compromise of a password database less likely to
result in an attacker gaining knowledge of the plaintext passwords (e.g. using
John the Ripper).")
    ;; "sha2.c" is under BSD-3;
    ;; "blowfish.c" and "bcrypt.c" are under BSD-4;
    ;; the rest is under ISC.
    (license (list license:isc license:bsd-3 license:bsd-4))))

(define-public python2-py-bcrypt
  (package-with-python2 python-py-bcrypt))

(define-public python-pyblake2
  (package
    (name "python-pyblake2")
    (version "1.1.2")
    (source
     (origin
       (method url-fetch)
       (uri (pypi-uri "pyblake2" version))
       (sha256
        (base32
         "0gz9hgznv5zw4qjq43xa56y0yikimx30gffvibxzm0nv5sq7xk2w"))))
    (build-system python-build-system)
    (home-page "https://github.com/dchest/pyblake2")
    (synopsis "BLAKE2 hash function for Python")
    (description "BLAKE2 is a cryptographic hash function, which offers
stronger security while being as fast as MD5 or SHA-1, and comes in two
flavors: @code{BLAKE2b}, optimized for 64-bit platforms and produces digests
of any size between 1 and 64 bytes, and @code{BLAKE2s}, optimized for 8- to
32-bit platforms and produces digests of any size between 1 and 32 bytes.

This package provides a Python interface for BLAKE2.")
    ;; The COPYING file declares it as public domain, with the option to
    ;; alternatively use and redistribute it under a variety of permissive
    ;; licenses. cc0 is explicitly mentioned in setup.py and pyblake2module.c.
    (license (list license:public-domain license:cc0))))

(define-public python-paramiko
  (package
    (name "python-paramiko")
    (version "2.4.2")
    (source
     (origin
       (method url-fetch)
       (uri (pypi-uri "paramiko" version))
       (sha256
        (base32
         "1jqgj2gl1pz7bi2aab1r2xq0ml0gskmm9p235cg9y32nydymm5x8"))))
    (build-system python-build-system)
    (arguments
     `(;; FIXME: Tests require many unpackaged libraries, see dev-requirements.txt.
       #:tests? #f))
    (propagated-inputs
     `(("python-bcrypt" ,python-bcrypt)
       ("python-pyasn1" ,python-pyasn1)
       ("python-pynacl" ,python-pynacl)
       ("python-cryptography" ,python-cryptography)))
    (home-page "https://www.paramiko.org/")
    (synopsis "SSHv2 protocol library")
    (description "Paramiko is a python implementation of the SSHv2 protocol,
providing both client and server functionality.  While it leverages a Python C
extension for low level cryptography (PyCrypto), Paramiko itself is a pure
Python interface around SSH networking concepts.")
    (license license:lgpl2.1+)))

(define-public python2-paramiko
  (package-with-python2 python-paramiko))

(define-public python-ecdsa
  (package
    (name "python-ecdsa")
    (version "0.14.1")
    (source
     (origin
       (method url-fetch)
       (uri (pypi-uri "ecdsa" version))
       (sha256
        (base32 "13nx5cbfxc0gnax5zwdmp9xc40qd1llk62mv85jyrvqkbw017ik4"))))
    (build-system python-build-system)
    (propagated-inputs
     `(("python-six" ,python-six)))
    (native-inputs
     `(("openssl" ,openssl)))
    (home-page "https://github.com/warner/python-ecdsa")
    (synopsis "ECDSA cryptographic signature library (pure python)")
    (description
     "This is an easy-to-use implementation of ECDSA cryptography (Elliptic
Curve Digital Signature Algorithm), implemented purely in Python.  With this
library, you can quickly create keypairs (signing key and verifying key), sign
messages, and verify the signatures.  The keys and signatures are very short,
making them easy to handle and incorporate into other protocols.")
    (license license:expat)))

(define-public python2-ecdsa
  (package-with-python2 python-ecdsa))

;;; Pycrypto is abandoned upstream:
;;;
;;; https://github.com/dlitz/pycrypto/issues/173
;;;
;;; TODO Remove this package from GNU Guix.
(define-public python-pycrypto
  (package
    (name "python-pycrypto")
    (version "2.6.1")
    (source
     (origin
      (method url-fetch)
      (uri (pypi-uri "pycrypto" version))
      (patches (search-patches "python-pycrypto-CVE-2013-7459.patch"))
      (sha256
       (base32
        "0g0ayql5b9mkjam8hym6zyg6bv77lbh66rv1fyvgqb17kfc1xkpj"))))
    (build-system python-build-system)
    (inputs
     `(("python" ,python)
       ("gmp" ,gmp)))
    (arguments
     `(#:phases
       (modify-phases %standard-phases
         (add-before 'build 'set-build-env
           ;; pycrypto runs an autoconf configure script behind the scenes
           (lambda _ (setenv "CONFIG_SHELL" (which "bash")) #t)))))
    (home-page "http://www.pycrypto.org/")
    (synopsis "Cryptographic modules for Python")
    (description
     "Pycrypto is a collection of both secure hash functions (such as SHA256
and RIPEMD160), and various encryption algorithms (AES, DES, RSA, ElGamal,
etc.).  The package is structured to make adding new modules easy.")
    (license license:public-domain)))

(define-public python2-pycrypto
  (let ((pycrypto (package-with-python2 python-pycrypto)))
    (package (inherit pycrypto)
      (inputs
       `(("python" ,python-2)
         ,@(alist-delete
            "python"
            (package-inputs pycrypto)))))))

(define-public python-keyring
  (package
    (name "python-keyring")
    (version "8.7")
    (source
     (origin
      (method url-fetch)
      (uri (pypi-uri "keyring" version))
      (sha256
       (base32
        "0482rmi2x6p78wl2kz8qzyq21xz1sbbfwnv5x7dggar4vkwxhzfx"))))
    (build-system python-build-system)
    (native-inputs
     `(("python-pytest" ,python-pytest)
       ("python-pytest-runner" ,python-pytest-runner)
       ("python-setuptools-scm" ,python-setuptools-scm)))
    (propagated-inputs
     `(("python-pycrypto" ,python-pycrypto)))
    (home-page "https://github.com/jaraco/keyring")
    (synopsis "Store and access your passwords safely")
    (description
     "The Python keyring lib provides a easy way to access the system keyring
service from python.  It can be used in any application that needs safe
password storage.")
    ;; "MIT" and PSF dual license
    (license license:x11)))

(define-public python2-keyring
  (package-with-python2 python-keyring))

(define-public python-certifi
  (package
    (name "python-certifi")
    (version "2019.3.9")
    (source (origin
              (method url-fetch)
              (uri (pypi-uri "certifi" version))
              (sha256
               (base32
                "1bnpw7hrf9i1l9gfxjnzi45hkrvzz0pyn9ia8m4mw7sxhgb08qdj"))))
    (build-system python-build-system)
    (home-page "https://certifi.io/")
    (synopsis "Python CA certificate bundle")
    (description
     "Certifi is a Python library that contains a CA certificate bundle, which
is used by the Requests library to verify HTTPS requests.")
    (license license:asl2.0)))

(define-public python2-certifi
  (package-with-python2 python-certifi))

(define-public python-cryptography-vectors
  (package
    (name "python-cryptography-vectors")
    (version "2.7")
    (source
     (origin
       (method url-fetch)
       (uri (pypi-uri "cryptography_vectors" version))
       (sha256
        (base32
         "1g38zw90510azyfrj6mxbslx2gp9yrnv5dac0w2819k9ssdznbgi"))))
    (build-system python-build-system)
    (home-page "https://github.com/pyca/cryptography")
    (synopsis "Test vectors for the cryptography package")
    (description
      "This package contains test vectors for the cryptography package.")
    ;; Distributed under either BSD-3 or ASL2.0
    (license (list license:bsd-3 license:asl2.0))))

(define-public python2-cryptography-vectors
  (package-with-python2 python-cryptography-vectors))

(define-public python-cryptography
  (package
    (name "python-cryptography")
    (version "2.7")
    (source
     (origin
       (method url-fetch)
       (uri (pypi-uri "cryptography" version))
       (sha256
        (base32
         "1inlnr36kl36551c9rcad99jmhk81v33by3glkadwdcgmi17fd76"))))
    (build-system python-build-system)
    (inputs
     `(("openssl" ,openssl)))
    (propagated-inputs
     `(("python-asn1crypto" ,python-asn1crypto)
       ("python-cffi" ,python-cffi)
       ("python-six" ,python-six)
       ("python-idna" ,python-idna)
       ("python-iso8601" ,python-iso8601)))
    (native-inputs
     `(("python-cryptography-vectors" ,python-cryptography-vectors)
       ("python-hypothesis" ,python-hypothesis)
       ("python-pretend" ,python-pretend)
       ("python-pytz" ,python-pytz)
       ("python-pytest" ,python-pytest)))
    (home-page "https://github.com/pyca/cryptography")
    (synopsis "Cryptographic recipes and primitives for Python")
    (description
      "cryptography is a package which provides cryptographic recipes and
primitives to Python developers.  It aims to be the “cryptographic standard
library” for Python.  The package includes both high level recipes, and low
level interfaces to common cryptographic algorithms such as symmetric ciphers,
message digests and key derivation functions.")
    ;; Distributed under either BSD-3 or ASL2.0
    (license (list license:bsd-3 license:asl2.0))
    (properties `((python2-variant . ,(delay python2-cryptography))))))

(define-public python2-cryptography
  (let ((crypto (package-with-python2
                 (strip-python2-variant python-cryptography))))
    (package (inherit crypto)
      (propagated-inputs
       `(("python2-ipaddress" ,python2-ipaddress)
         ("python2-backport-ssl-match-hostname"
          ,python2-backport-ssl-match-hostname)
         ("python2-enum34" ,python2-enum34)
         ,@(package-propagated-inputs crypto))))))

(define-public python-pyopenssl
  (package
    (name "python-pyopenssl")
    (version "19.0.0")
    (source
     (origin
       (method url-fetch)
       (uri (pypi-uri "pyOpenSSL" version))
       (sha256
        (base32
         "007j40y7x3k8xj54dy2qnij9lldfp71k9mkflhd9vqbdiwrndjmf"))))
    (build-system python-build-system)
    (arguments
     '(#:phases
       (modify-phases %standard-phases
         (delete 'check)
         (add-after 'install 'check
           (lambda* (#:key inputs outputs #:allow-other-keys)
             (add-installed-pythonpath inputs outputs)
             (invoke "py.test" "-v" "-k"
                     (string-append
                      ;; This test tries to look up certificates from
                      ;; the compiled-in default path in OpenSSL, which
                      ;; does not exist in the build environment.
                      "not test_fallback_default_verify_paths "
                      ;; This test attempts to make a connection to
                      ;; an external web service.
                      "and not test_set_default_verify_paths")))))))
    (propagated-inputs
     `(("python-cryptography" ,python-cryptography)
       ("python-six" ,python-six)))
    (inputs
     `(("openssl" ,openssl)))
    (native-inputs
     `(("python-flaky" ,python-flaky)
       ("python-pretend" ,python-pretend)
       ("python-pytest" ,python-pytest)))
    (home-page "https://github.com/pyca/pyopenssl")
    (synopsis "Python wrapper module around the OpenSSL library")
    (description
      "PyOpenSSL is a high-level wrapper around a subset of the OpenSSL
library.")
    (license license:asl2.0)))

(define-public python2-pyopenssl
  (package-with-python2 python-pyopenssl))

(define-public python-ed25519
  (package
    (name "python-ed25519")
    (version "1.4")
    (source
      (origin
        (method url-fetch)
        (uri (pypi-uri "ed25519" version))
        (sha256
          (base32
            "0ahx1nkxa0xis3cw0h5c4fpgv8mq4znkq7kajly33lc3317bk499"))))
    (build-system python-build-system)
    (home-page "https://github.com/warner/python-ed25519")
    (synopsis "Ed25519 public-key signatures")
    (description "Ed25519 public-key signatures")
    (license license:expat)))

(define-public python2-ed25519
  (package-with-python2 python-ed25519))

(define-public python-axolotl-curve25519
  (package
    (name "python-axolotl-curve25519")
    (version "0.1")
    (source
     (origin
       (method git-fetch)
       (uri (git-reference
             (url "https://github.com/tgalal/python-axolotl-curve25519")
             (commit "e4a9c4de0eae27223200579c58d1f8f6d20637e2")))
       (file-name (string-append name "-" version "-checkout"))
       (sha256
        (base32
         "0agap5q0hmvf6cwzjqc05kw53pjgf6942pcivpazksmg1vk400ra"))))
    (build-system python-build-system)
    (arguments
     `(;; Prevent creation of the egg. This works around
       ;; https://debbugs.gnu.org/cgi/bugreport.cgi?bug=20765
       #:configure-flags '("--root=/")))
    (home-page "https://github.com/tgalal/python-axolotl-curve25519")
    (synopsis "Python wrapper for curve25519 library")
    (description "This is a python wrapper for the curve25519 library
with ed25519 signatures.  The C code was pulled from
libaxolotl-android.  At the moment this wrapper is meant for use by
python-axolotl.")
    (license (list license:gpl3    ; Most files
                   license:bsd-3)))) ; curve/curve25519-donna.c

(define-public python2-axolotl-curve25519
  (package-with-python2 python-axolotl-curve25519))

(define-public python-axolotl
  (package
    (name "python-axolotl")
    (version "0.1.39")
    (source
     (origin
       (method url-fetch)
       (uri (string-append
             "https://github.com/tgalal/python-axolotl/archive/"
             version ".tar.gz"))
       (file-name (string-append name "-" version ".tar.gz"))
       (patches (search-patches "python-axolotl-AES-fix.patch"))
       (sha256
        (base32 "0badsgkgz0ir3hqynxzsfjgacppi874syvvmgccc6j164053x6zm"))))
    (build-system python-build-system)
    (arguments
     `(#:phases
       (modify-phases %standard-phases
         ;; Don't install tests
         (add-before 'install 'remove-tests
           (lambda _
             (for-each delete-file-recursively
                       '("axolotl/tests" "build/lib/axolotl/tests"))
             #t)))))
    (propagated-inputs
     `(("python-axolotl-curve25519" ,python-axolotl-curve25519)
       ("python-dateutil" ,python-dateutil)
       ("python-protobuf" ,python-protobuf)
       ("python-pycrypto" ,python-pycrypto)))
    (home-page "https://github.com/tgalal/python-axolotl")
    (synopsis "Python port of libaxolotl-android")
    (description "This is a python port of libaxolotl-android.  This
is a ratcheting forward secrecy protocol that works in synchronous and
asynchronous messaging environments.")
    (license license:gpl3)))

(define-public python2-axolotl
  (package-with-python2 python-axolotl))

;; SlowAES isn't compatible with Python 3.
(define-public python2-slowaes
  (package
    (name "python2-slowaes")
    (version "0.1a1")
    (source
     (origin
       (method url-fetch)
       (uri (pypi-uri "slowaes" version))
       (sha256
        (base32
         "02dzajm83a7lqgxf6r3hgj64wfmcxz8gs4nvgxpvj5n19kjqlrc3"))))
    (build-system python-build-system)
    (arguments `(#:python ,python-2))
    (home-page "http://code.google.com/p/slowaes/")
    (synopsis "Implementation of AES in Python")
    (description "This package contains an implementation of AES in Python.
This implementation is slow (hence the project name) but still useful when
faster ones are not available.")
    (license license:asl2.0)))

(define-public python-pyaes
  (package
    (name "python-pyaes")
    (version "1.6.1")
    (source
     (origin
       (method url-fetch)
       (uri (pypi-uri "pyaes" version))
       (sha256
        (base32
         "13vdaff15k0jyfcss4b4xvfgm8xyv0nrbyw5n1qc7lrqbi0b3h82"))))
    (build-system python-build-system)
    (home-page "https://github.com/ricmoo/pyaes")
    (synopsis "Implementation of AES in Python")
    (description "This package contains a pure-Python implementation of the
AES block cipher algorithm and the common modes of operation (CBC, CFB, CTR,
ECB and OFB).")
    (license license:expat)))

(define-public python2-pyaes
  (package-with-python2 python-pyaes))

(define-public python-asn1crypto
  (package
    (name "python-asn1crypto")
    (version "0.24.0")
    (source
      (origin
       (method git-fetch)
       (uri (git-reference
              (url "https://github.com/wbond/asn1crypto.git")
              (commit version)))
        (file-name (git-file-name name version))
        (sha256
         (base32
          "10lai2cs5mnz3gpaffbw1m7b885ls8328q5wxm35vfmcip1f0xmb"))))
    (build-system python-build-system)
    (home-page "https://github.com/wbond/asn1crypto")
    (synopsis "ASN.1 parser and serializer in Python")
    (description "asn1crypto is an ASN.1 parser and serializer with definitions
for private keys, public keys, certificates, CRL, OCSP, CMS, PKCS#3, PKCS#7,
PKCS#8, PKCS#12, PKCS#5, X.509 and TSP.")
    (license license:expat)))

(define-public python2-asn1crypto
  (package-with-python2 python-asn1crypto))

(define-public python-pynacl
  (package
    (name "python-pynacl")
    (version "1.3.0")
    (source
     (origin
       (method url-fetch)
       (uri (pypi-uri "PyNaCl" version))
       (modules '((guix build utils)))
       ;; Remove bundled libsodium.
       (snippet '(begin (delete-file-recursively "src/libsodium")
                        #t))
       (sha256
        (base32
         "0330wyvggm19xhmwmz9rrr97lzbv3siwfy50gmax3vvgs7nh0q8c"))))
    (build-system python-build-system)
    (arguments
     `(#:phases
       (modify-phases %standard-phases
         (add-before 'build 'use-system-sodium
           (lambda _
             (setenv "SODIUM_INSTALL" "system")
             #t)))))
    (native-inputs
     `(("python-hypothesis" ,python-hypothesis)
       ("python-pytest" ,python-pytest)))
    (propagated-inputs
     `(("python-cffi" ,python-cffi)
       ("python-six" ,python-six)
       ("libsodium" ,libsodium)))
    (home-page "https://github.com/pyca/pynacl/")
    (synopsis "Python bindings to libsodium")
    (description
     "PyNaCl is a Python binding to libsodium, which is a fork of the
Networking and Cryptography library.  These libraries have a stated goal
of improving usability, security and speed.")
    (license license:asl2.0)))

(define-public python2-pynacl
  (package-with-python2 python-pynacl))

(define-public python2-pgpdump
  (package
    (name "python2-pgpdump")
    (version "1.5")
    (source
     (origin
       (method url-fetch)
       (uri (pypi-uri "pgpdump" version))
       (sha256
        (base32
         "0s4nh8h7qsdj2yf29bspjs1zvxd4lcd11r6g11dp7fppgf2h0iqw"))))
    (build-system python-build-system)

    ;; Currently fails to build with Python 3.
    (arguments `(#:python ,python-2))

    (home-page "https://github.com/toofishes/python-pgpdump")
    (synopsis "Python library for parsing PGP packets")
    (description
     "Python-pgpdump is an OpenPGP packet parser based on
@uref{http://www.mew.org/~kazu/proj/pgpdump/, pgpdump}.  It notably supports:

@itemize
@item signature packets;
@item public key packets;
@item secret key packets;
@item trust, user ID, and user attribute packets;
@item ASCII-armor decoding and CRC check.
@end itemize\n")
    (license license:bsd-3)))

(define-public python2-roca-detect
  (package
    (name "python2-roca-detect")
    (version "1.0.8")
    (source
     (origin
       (method url-fetch)
       (uri (pypi-uri "roca-detect" version))
       (sha256
        (base32
         "1di4akyw2lf5r8zfwvyhkilz8jv8g4b66rgaqwfabmjwma6gnw27"))))
    (build-system python-build-system)
    (native-inputs
     ;; TODO: apk_parse_ph4, pyjks
     `(("python2-dateutil" ,python2-dateutil)
       ("python2-six" ,python2-six)
       ("python2-cryptography" ,python2-cryptography)
       ("python2-future" ,python2-future)
       ("python2-coloredlogs" ,python2-coloredlogs)
       ("python2-pgpdump" ,python2-pgpdump)))
    (arguments
     `(;; Basic testing routine is quite simple and works with Py3
       ;; but the rest of the code that processes the different
       ;; key formats and extracts the modulus for inspection is
       ;; not yet fully py3 ready.
       #:python ,python-2))
    (home-page "https://github.com/crocs-muni/roca")
    (synopsis "ROCA detection tool")
    (description
     "This tool is related to the paper entitled @i{Return of the
Coppersmith’s Attack: Practical Factorization of Widely Used RSA Moduli}.  It
enables you to test public RSA keys for a presence of the described
vulnerability.  Currently the tool supports the following key formats: X.509
Certificate (DER encoded, PEM encoded), RSA PEM (encoded private key, public
key), SSH public key, ASC-encoded OpenPGP key, APK Android application, LDIFF
file, and more.")
    (license license:gpl3)))

(define-public python-ecpy
  (package
    (name "python-ecpy")
    (version "0.10.0")
    (source
      (origin
        (method url-fetch)
        (uri (pypi-uri "ECPy" version))
        (sha256
          (base32
            "1gc3i5s93zq6x1nkaxkq1dvmsc12vmrw0hns9f5s1hcb78ni52c8"))))
    (build-system python-build-system)
    (propagated-inputs
     `(("python-future" ,python-future)))
    (home-page "https://github.com/ubinity/ECPy")
    (synopsis "Pure Python Elliptic Curve Library")
    (description "This package provides a Elliptic Curve Library in pure
Python.")
    (license license:asl2.0)))

(define-public python2-ecpy
  (package-with-python2 python-ecpy))

(define-public python-josepy
  (package
    (name "python-josepy")
    (version "1.1.0")
    (source (origin
              (method url-fetch)
              (uri (pypi-uri "josepy" version))
              (sha256
               (base32
                "11khz8malzrv375b27jjkv66z6z6khdx1v5mkkr4vq16gp3n4p7v"))))
    (build-system python-build-system)
    (arguments
     ;; The tests require flake8 >= 3.5, which is not yet packaged.
     '(#:tests? #f))
    (propagated-inputs
     `(("python-cryptography" ,python-cryptography)
       ("python-pyopenssl" ,python-pyopenssl)
       ("python-six" ,python-six)))
;; TODO Enable when we have flake8 >= 3.5.
;    (native-inputs
;     `(("python-coverage" ,python-coverage)
;       ("python-flake8" ,python-flake8)
;       ("python-isort" ,python-isort)
;       ("python-mock" ,python-mock)
;       ("python-pytest" ,python-pytest)
;       ("python-pytest-cov" ,python-pytest-cov)
;       ("python-pytest-cache" ,python-pytest-cache)
;       ("python-pytest-flake8" ,python-pytest-flake8)))
    (home-page "https://github.com/certbot/josepy")
    (synopsis "JOSE protocol implementation in Python")
    (description "This package provides a Python implementation of the JOSE
protocol (Javascript Object Signing and Encryption).")
    (license license:asl2.0)))

(define-public python2-josepy
  (package-with-python2 python-josepy))

(define-public python-pycryptodome
  (package
    (name "python-pycryptodome")
    (version "3.7.3")
    (source
     (origin
       (method url-fetch)
       (uri (pypi-uri "pycryptodome" version))
       (sha256
        (base32
         "0dh6ky5ngxayyn5f6n7gdamjl49g3khz6pdx9sdnag1zwi8248hs"))))
    (build-system python-build-system)
    (home-page "https://www.pycryptodome.org")
    (synopsis "Cryptographic library for Python")
    (description "This package provides a cryptographic library for Python.

It brings the following enhancements with respect to the last official version
of PyCrypto:

@itemize
@item Authenticated encryption modes (GCM, CCM, EAX, SIV, OCB)
@item Accelerated AES on Intel platforms via AES-NI
@item First class support for PyPy
@item Elliptic curves cryptography (NIST P-256 curve only)
@item Better and more compact API (nonce and iv attributes for ciphers,
automatic generation of random nonces and IVs, simplified CTR cipher mode, and
more)
@item SHA-3 (including SHAKE XOFs) and BLAKE2 hash algorithms
@item Salsa20 and ChaCha20 stream ciphers
@item scrypt and HKDF
@item Deterministic (EC)DSA
@item Password-protected PKCS#8 key containers
@item Shamir’s Secret Sharing scheme
@item Random numbers get sourced directly from the OS (and not from a CSPRNG
in userspace)
@item Cleaner RSA and DSA key generation (largely based on FIPS 186-4)
@item Major clean ups and simplification of the code base
@end itemize\n")
    (license license:bsd-2)))

(define-public python2-pycryptodome
  (package-with-python2 python-pycryptodome))

(define-public python-m2crypto
  (package
    (name "python-m2crypto")
    (version "0.35.2")
    (source
     (origin
       (method url-fetch)
       (uri (pypi-uri "M2Crypto" version))
       (sha256
        (base32 "09yirf3w77w6f49q6nxhrjm9c3a4y9s30s1k09chqrw8zdgx8sjc"))))
    (build-system python-build-system)
    (inputs `(("openssl" ,openssl)))
    (home-page "https://gitlab.com/m2crypto/m2crypto")
    (synopsis "Python crypto and TLS toolkit")
    (description "@code{M2Crypto} is a complete Python wrapper for OpenSSL
featuring RSA, DSA, DH, EC, HMACs, message digests, symmetric ciphers
(including AES); TLS functionality to implement clients and servers; HTTPS
extensions to Python's httplib, urllib, and xmlrpclib; unforgeable HMAC'ing
AuthCookies for web session management; FTP/TLS client and server; S/MIME;
M2Crypto can also be used to provide TLS for Twisted.  Smartcards supported
through the Engine interface.")
    (properties `((python2-variant . ,(delay python2-m2crypto))))
    (license license:expat)))

(define-public python2-m2crypto
  (let ((m2crypto (package-with-python2
                   (strip-python2-variant python-m2crypto))))
    (package (inherit m2crypto)
             (propagated-inputs
              `(("python2-typing" ,python2-typing))))))

(define-public python-pylibscrypt
  (package
    (name "python-pylibscrypt")
    (version "1.7.1")
    (source
     (origin
       (method url-fetch)
       (uri (pypi-uri "pylibscrypt" version))
       (sha256
        (base32
         "1b3rgzl6dbzs08vhv41b6y4n5189wv7lr27acxn104hs45745abs"))))
    (build-system python-build-system)
    (arguments
     `(#:phases
       (modify-phases %standard-phases
         (add-before 'build 'hard-code-path-to-libscrypt
           (lambda* (#:key inputs #:allow-other-keys)
             (let ((libscrypt (assoc-ref inputs "libscrypt")))
               (substitute* "pylibscrypt/pylibscrypt.py"
                 (("find_library\\('scrypt'\\)")
                  (string-append "'" libscrypt "/lib/libscrypt.so'")))
               #t))))
       ;; The library can use various scrypt implementations and tests all of
       ;; them.  Since we only provide a single implementation, most tests
       ;; fail.  Simply skip them.
       #:tests? #f))
    ;; FIXME: Using "libscrypt" is the second best choice.  The best one
    ;; requires "hashlib.scrypt", provided by Python 3.6+ built with OpenSSL
    ;; 1.1+.  Use that as soon as Guix provides it.
    (inputs
     `(("libscrypt" ,libscrypt)))
    (home-page "https://github.com/jvarho/pylibscrypt")
    (synopsis "Scrypt for Python")
    (description "There are a lot of different scrypt modules for Python, but
none of them have everything that I'd like, so here's one more.  It uses
@code{libscrypt}.")
    (license license:isc)))

(define-public python-libnacl
  (package
    (name "python-libnacl")
    (version "1.6.1")
    (source
     (origin
       (method url-fetch)
       (uri (pypi-uri "libnacl" version))
       (sha256
        (base32
         "0nv7n8nfswkhl614x5mllrkvaslraa0053q11iylb337cy43vb4v"))))
    (build-system python-build-system)
    (arguments
     `(#:phases
       (modify-phases %standard-phases
         (add-after 'unpack 'locate-libsodium
           (lambda* (#:key inputs #:allow-other-keys)
             (substitute* "libnacl/__init__.py"
               (("(return ctypes.cdll.LoadLibrary\\(')libsodium.so('\\))"
                 _ pre post)
                (let ((libsodium (string-append (assoc-ref inputs "libsodium")
                                                "/lib/libsodium.so")))
                  (string-append pre libsodium post)))))))))
    (native-inputs
     `(("python-pyhamcrest" ,python-pyhamcrest)))
    (inputs
     `(("libsodium" ,libsodium)))
    (home-page "https://libnacl.readthedocs.org/")
    (synopsis "Python bindings for libsodium based on ctypes")
    (description "@code{libnacl} is used to gain direct access to the
functions exposed by @code{NaCl} library via @code{libsodium}.  It has
been constructed to maintain extensive documentation on how to use
@code{NaCl} as well as being completely portable.")
    (license license:asl2.0)))

(define-public python-scrypt
  (package
    (name "python-scrypt")
    (version "0.8.7")
    (source
     (origin
       (method url-fetch)
       (uri (pypi-uri "scrypt" version))
       (sha256
        (base32
         "0hjk71k3mgnl8siikm9lii9im8kv0rb7inkjzx78rnancra48xxr"))))
    (build-system python-build-system)
    (inputs
     `(("openssl" ,openssl)))
    (home-page "http://bitbucket.org/mhallin/py-scrypt")
    (synopsis "Bindings for the scrypt key derivation function library")
    (description "This is a set of Python bindings for the scrypt key
derivation function.")
    (license license:bsd-2)))

(define-public python-service-identity
  (package
    (name "python-service-identity")
    (version "18.1.0")
    (source
     (origin
       (method url-fetch)
       (uri (pypi-uri "service_identity" version))
       (sha256
        (base32
         "0b9f5qiqjy8ralzgwjgkhx82h6h8sa7532psmb8mkd65md5aan08"))))
    (build-system python-build-system)
    (propagated-inputs
     `(("python-attrs" ,python-attrs)
       ("python-pyasn1" ,python-pyasn1)
       ("python-pyasn1-modules" ,python-pyasn1-modules)
       ("python-pyopenssl" ,python-pyopenssl)))
    (home-page "https://service-identity.readthedocs.io/")
    (synopsis "Service identity verification for PyOpenSSL")
    (description
     "@code{service_identity} aspires to give you all the tools you need
for verifying whether a certificate is valid for the intended purposes.
In the simplest case, this means host name verification.  However,
service_identity implements RFC 6125 fully and plans to add other
relevant RFCs too.")
    (license license:expat)))

(define-public python2-service-identity
  (package-with-python2 python-service-identity))

(define-public python-hkdf
  (package
    (name "python-hkdf")
    (version "0.0.3")
    (source
      (origin
        (method url-fetch)
        (uri (pypi-uri "hkdf" version))
        (sha256
         (base32
          "1jhxk5vhxmxxjp3zj526ry521v9inzzl8jqaaf0ma65w6k332ak2"))))
    (build-system python-build-system)
    (native-inputs
     `(("python-nose" ,python-nose)))
    (home-page "https://github.com/casebeer/python-hkdf")
    (synopsis "HMAC-based Extract-and-Expand Key Derivation Function (HKDF)")
    (description "This package provides a Python implementation of the HMAC Key
Derivation function (HKDF) defined in RFC 5869.")
    (license license:bsd-2)))

(define-public python-spake2
  (package
    (name "python-spake2")
    (version "0.8")
    (source
      (origin
        (method url-fetch)
        (uri (pypi-uri "spake2" version))
        (sha256
         (base32
          "1x16r7lrbklvfzbacb66qv9iiih6liq1y612dqh2chgf555n2yn1"))))
    (build-system python-build-system)
    (propagated-inputs
     `(("python-hkdf" ,python-hkdf)))
    (home-page "https://github.com/warner/python-spake2")
    (synopsis "SPAKE2 password-authenticated key exchange in Python")
    (description "This package provides a Python implementation of the SPAKE2
Password-Authenticated Key Exchange algorithm.")
    (license license:expat)))

(define-public python-txtorcon
  (package
    (name "python-txtorcon")
    (version "19.0.0")
    (source
      (origin
        (method url-fetch)
        (uri (pypi-uri "txtorcon" version))
        (sha256
         (base32
          "0fxzhsc62bhmr730vj9pzallmw56gz6iykvl28a5agrycm0bfc9p"))))
    (build-system python-build-system)
    (arguments
      ;; The tests fail immediately due to a missing file. Reported upstream:
      ;; <https://github.com/meejah/txtorcon/issues/330>
     `(#:tests? #f))
    (propagated-inputs
     `(("python-automat" ,python-automat)
       ("python-idna" ,python-idna)
       ("python-incremental" ,python-incremental)
       ("python-ipaddress" ,python-ipaddress)
       ("python-service-identity" ,python-service-identity)
       ("python-twisted" ,python-twisted)
       ("python-zope-interface" ,python-zope-interface)))
    (home-page "https://github.com/meejah/txtorcon")
    (synopsis "Twisted-based Tor controller client")
    (description "This package provides a Twisted-based Tor controller client,
with state-tracking and configuration abstractions.")
    (license license:expat)))

(define-public python-keyutils
  (package
    (name "python-keyutils")
    (version "0.6")
    (source
     (origin
       (method url-fetch)
       (uri (pypi-uri "keyutils" version))
       (sha256
        (base32
         "0lipygpzhwzzsq2k5imb1jgkmj8y4khxdwhzadjs3bd56g6bmkx9"))))
    (build-system python-build-system)
    (native-inputs
     `(("python-pytest" ,python-pytest)
       ("python-pytest-runner" ,python-pytest-runner)))
    (inputs
     `(("keyutils" ,keyutils)))
    (arguments
     '(#:tests? #f))
    (home-page "https://github.com/sassoftware/python-keyutils")
    (synopsis "Python bindings for keyutils")
    (description
     "This is a set of python bindings for keyutils, a key management suite
that leverages the infrastructure provided by the Linux kernel for safely
storing and retrieving sensitive information in your programs.")
    (license license:asl2.0)))

(define-public python-mcuboot-imgtool
  (package
    (name "python-mcuboot-imgtool")
    (version "1.4.0")
    (source
     (origin
       (method git-fetch)
       (uri (git-reference
             (url "https://github.com/JuulLabs-OSS/mcuboot")
             (commit (string-append "v" version))))
       (file-name (git-file-name name version))
       (sha256
        (base32
         "1m1csyvzq4jx81zg635ssy1n7sc0z539z0myh872ll3nwqx7wa0q"))))
    (build-system python-build-system)
    (arguments
     `(#:phases
       (modify-phases %standard-phases
         (add-after 'unpack 'fix-broken-test
           (lambda _
             (substitute* "scripts/imgtool/keys/ed25519_test.py"
               (("raw_sign") "sign_digest"))
             #t))
         (add-before 'build 'change-directory
           (lambda _
             (chdir "scripts")
             #t)))))
    (propagated-inputs
     `(("python-click" ,python-click)
       ("python-intelhex" ,python-intelhex)
       ("python-cryptography" ,python-cryptography)))
    (home-page "https://mcuboot.com")
    (synopsis "Tool to securely sign firmware images for booting by MCUboot")
    (description "MCUboot is a secure bootloader for 32-bit MCUs.  This
package provides a tool to securely sign firmware images for booting by
MCUboot.")
    (license license:expat)))