gnu/packages/crypto.scm

   1 ;;; GNU Guix --- Functional package management for GNU
   2 ;;; Copyright © 2014 David Thompson <davet@gnu.org>
   3 ;;; Copyright © 2015, 2017 Ricardo Wurmus <rekado@elephly.net>
   4 ;;; Copyright © 2016, 2017 Leo Famulari <leo@famulari.name>
   5 ;;; Copyright © 2016 Lukas Gradl <lgradl@openmailbox>
   6 ;;; Copyright © 2016 Tobias Geerinckx-Rice <me@tobias.gr>
   7 ;;; Copyright © 2016 ng0 <ng0@we.make.ritual.n0.is>
   8 ;;; Copyright © 2016, 2017 Eric Bavier <bavier@member.fsf.org>
   9 ;;;
  10 ;;; This file is part of GNU Guix.
  11 ;;;
  12 ;;; GNU Guix is free software; you can redistribute it and/or modify it
  13 ;;; under the terms of the GNU General Public License as published by
  14 ;;; the Free Software Foundation; either version 3 of the License, or (at
  15 ;;; your option) any later version.
  16 ;;;
  17 ;;; GNU Guix is distributed in the hope that it will be useful, but
  18 ;;; WITHOUT ANY WARRANTY; without even the implied warranty of
  19 ;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20 ;;; GNU General Public License for more details.
  21 ;;;
  22 ;;; You should have received a copy of the GNU General Public License
  23 ;;; along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.
  24
  25 (define-module (gnu packages crypto)
  26   #:use-module (gnu packages)
  27   #:use-module (gnu packages admin)
  28   #:use-module (gnu packages aidc)
  29   #:use-module (gnu packages attr)
  30   #:use-module (gnu packages autotools)
  31   #:use-module (gnu packages boost)
  32   #:use-module (gnu packages cryptsetup)
  33   #:use-module (gnu packages gettext)
  34   #:use-module (gnu packages gnupg)
  35   #:use-module (gnu packages image)
  36   #:use-module (gnu packages pkg-config)
  37   #:use-module (gnu packages libbsd)
  38   #:use-module (gnu packages linux)
  39   #:use-module (gnu packages nettle)
  40   #:use-module (gnu packages password-utils)
  41   #:use-module (gnu packages perl)
  42   #:use-module (gnu packages readline)
  43   #:use-module (gnu packages search)
  44   #:use-module (gnu packages serialization)
  45   #:use-module (gnu packages shells)
  46   #:use-module (gnu packages tcl)
  47   #:use-module (gnu packages tls)
  48   #:use-module (gnu packages xml)
  49   #:use-module ((guix licenses) #:prefix license:)
  50   #:use-module (guix packages)
  51   #:use-module (guix download)
  52   #:use-module (guix git-download)
  53   #:use-module (guix build-system cmake)
  54   #:use-module (guix build-system gnu)
  55   #:use-module (guix build-system perl)
  56   #:use-module (guix build-system python))
  57
  58 (define-public libsodium
  59   (package
  60     (name "libsodium")
  61     (version "1.0.13")
  62     (source (origin
  63             (method url-fetch)
  64             (uri (list (string-append
  65                         "http://download.libsodium.org/libsodium/"
  66                         "releases/libsodium-" version ".tar.gz")
  67                        (string-append
  68                         "https://download.libsodium.org/libsodium/"
  69                         "releases/old/libsodium-" version ".tar.gz")))
  70             (sha256
  71              (base32
  72               "1z93wfg4k5svg8yck6cgdr6ysj91kbpn03nyzwxanncy3b5sq4ww"))))
  73     (build-system gnu-build-system)
  74     (synopsis "Portable NaCl-based crypto library")
  75     (description
  76      "Sodium is a new easy-to-use high-speed software library for network
  77 communication, encryption, decryption, signatures, etc.")
  78     (license license:isc)
  79     (home-page "http://libsodium.org")))
  80
  81 (define-public signify
  82   (package
  83     (name "signify")
  84     (version "22")
  85     (source (origin
  86               (method url-fetch)
  87               (uri (string-append "https://github.com/aperezdc/signify/"
  88                                   "archive/v" version ".tar.gz"))
  89               (file-name (string-append name "-" version ".tar.gz"))
  90               (sha256
  91                (base32
  92                 "0iv5bjaas70ymqchxasapin4c32c41kqzkfhc3kcjzd7rxy78msy"))))
  93     (build-system gnu-build-system)
  94     ;; TODO Build with libwaive (described in README.md), to implement something
  95     ;; like OpenBSD's pledge().
  96     (arguments
  97      `(#:tests? #f ; no test suite
  98        #:make-flags
  99        (list "CC=gcc"
 100              (string-append "PREFIX=" (assoc-ref %outputs "out")))
 101        #:phases
 102        (modify-phases %standard-phases
 103          (delete 'configure))))
 104     (native-inputs
 105      `(("pkg-config" ,pkg-config)))
 106     (inputs
 107      `(("libbsd" ,libbsd)))
 108     (synopsis "Create and verify cryptographic signatures")
 109     (description "The signify utility creates and verifies cryptographic
 110 signatures using the elliptic curve Ed25519.  This is a Linux port of the
 111 OpenBSD tool of the same name.")
 112     (home-page "https://github.com/aperezdc/signify")
 113     ;; This package includes third-party code that was originally released under
 114     ;; various non-copyleft licenses. See the source files for clarification.
 115     (license (list license:bsd-3 license:bsd-4 license:expat license:isc
 116                    license:public-domain (license:non-copyleft
 117                                           "file://base64.c"
 118                                           "See base64.c in the distribution for
 119                                            the license from IBM.")))))
 120
 121
 122 (define-public opendht
 123   (package
 124     (name "opendht")
 125     (version "0.6.1")
 126     (source
 127      (origin
 128        (method url-fetch)
 129        (uri
 130         (string-append
 131          "https://github.com/savoirfairelinux/" name
 132          "/archive/" version ".tar.gz"))
 133        (file-name (string-append name "-" version ".tar.gz"))
 134        (modules '((guix build utils)))
 135        (snippet
 136         '(begin
 137            (delete-file-recursively "src/argon2")
 138            (substitute* "src/Makefile.am"
 139              (("./argon2/libargon2.la") "")
 140              (("SUBDIRS = argon2") ""))
 141            (substitute* "src/crypto.cpp"
 142              (("argon2/argon2.h") "argon2.h"))
 143            (substitute* "configure.ac"
 144              (("src/argon2/Makefile") ""))))
 145        (sha256
 146         (base32
 147          "09yvkmbqbym3b5md4n96qc1s9sf2n8ji404hagih45rmsj49599x"))))
 148     (build-system gnu-build-system)
 149     (inputs
 150      `(("gnutls" ,gnutls)
 151        ("nettle" ,nettle)
 152        ("readline" ,readline)
 153        ("argon2" ,argon2)))
 154     (propagated-inputs
 155      `(("msgpack" ,msgpack)))           ;included in several installed headers
 156     (native-inputs
 157      `(("autoconf" ,autoconf)
 158        ("pkg-config" ,pkg-config)
 159        ("automake" ,automake)
 160        ("libtool" ,libtool)))
 161     (arguments
 162      `(#:configure-flags '("--disable-tools" "--disable-python")
 163        #:phases (modify-phases %standard-phases
 164                   (add-before 'configure 'autoconf
 165                     (lambda _
 166                       (zero? (system* "autoreconf" "-vfi")))))))
 167     (home-page "https://github.com/savoirfairelinux/opendht/")
 168     (synopsis "Distributed Hash Table (DHT) library")
 169     (description "OpenDHT is a Distributed Hash Table (DHT) library.  It may
 170 be used to manage peer-to-peer network connections as needed for real time
 171 communication.")
 172     (license license:gpl3)))
 173
 174 (define-public encfs
 175   (package
 176     (name "encfs")
 177     (version "1.9.1")
 178     (source
 179      (origin
 180        (method url-fetch)
 181        (uri
 182         (string-append "https://github.com/vgough/encfs/releases/download/v"
 183                        version "/encfs-" version ".tar.gz"))
 184        (sha256
 185         (base32
 186          "1906254dg5hwljh0h4gyrw09ms3b57dlhjfzhfzffv50yzpkl837"))
 187        (modules '((guix build utils)))
 188        ;; Remove bundled dependencies in favour of proper inputs.
 189        (snippet '(for-each delete-file-recursively
 190                            (find-files "internal" "^tinyxml2-[0-9]"
 191                                        #:directories? #t)))))
 192     (build-system cmake-build-system)
 193     (native-inputs
 194      `(("gettext" ,gettext-minimal)
 195
 196        ;; Test dependencies.
 197        ("expect" ,expect)
 198        ("perl" ,perl)))
 199     (inputs
 200      `(("attr" ,attr)
 201        ("fuse" ,fuse)
 202        ("openssl" ,openssl)
 203        ("tinyxml2" ,tinyxml2)))
 204     (arguments
 205      `(#:configure-flags (list "-DUSE_INTERNAL_TINYXML=OFF")))
 206     (home-page "https://vgough.github.io/encfs")
 207     (synopsis "Encrypted virtual file system")
 208     (description
 209      "EncFS creates a virtual encrypted file system in user-space.  Each file
 210 created under an EncFS mount point is stored as a separate encrypted file on
 211 the underlying file system.  Like most encrypted file systems, EncFS is meant
 212 to provide security against off-line attacks, such as a drive falling into
 213 the wrong hands.")
 214     (license (list license:expat                  ; internal/easylogging++.h
 215                    license:lgpl3+                 ; encfs library
 216                    license:gpl3+))))              ; command-line tools
 217
 218 (define-public keyutils
 219   (package
 220     (name "keyutils")
 221     (version "1.5.9")
 222     (source
 223      (origin
 224        (method url-fetch)
 225        (uri
 226         (string-append "https://people.redhat.com/dhowells/keyutils/keyutils-"
 227                        version ".tar.bz2"))
 228        (sha256
 229         (base32
 230          "1bl3w03ygxhc0hz69klfdlwqn33jvzxl1zfl2jmnb2v85iawb8jd"))
 231        (modules '((guix build utils)))
 232        ;; Create relative symbolic links instead of absolute ones to /lib/*
 233        (snippet '(substitute* "Makefile" (("\\$\\(LNS\\) \\$\\(LIBDIR\\)/")
 234                                           "$(LNS) ")))))
 235     (build-system gnu-build-system)
 236     (arguments
 237      `(#:phases (modify-phases %standard-phases
 238                   (delete 'configure))          ; no configure script
 239        #:make-flags (list "CC=gcc"
 240                           "RPATH=-Wl,-rpath,$(DESTDIR)$(LIBDIR)"
 241                           (string-append "DESTDIR="
 242                                          (assoc-ref %outputs "out"))
 243                           "INCLUDEDIR=/include"
 244                           "LIBDIR=/lib"
 245                           "MANDIR=/share/man"
 246                           "SHAREDIR=/share/keyutils")
 247        #:test-target "test"))
 248     (home-page "https://people.redhat.com/dhowells/keyutils/")
 249     (synopsis "Linux key management utilities")
 250     (description
 251      "Keyutils is a set of utilities for managing the key retention facility in
 252 the Linux kernel, which can be used by file systems, block devices, and more to
 253 gain and retain the authorization and encryption keys required to perform
 254 secure operations. ")
 255     (license (list license:lgpl2.1+             ; the files keyutils.*
 256                    license:gpl2+))))            ; the rest
 257
 258 ;; There is no release candidate but commits point out a version number,
 259 ;; furthermore no tarball exists.
 260 (define-public eschalot
 261   (let ((commit "0bf31d88a11898c19b1ed25ddd2aff7b35dbac44")
 262         (revision "1"))
 263     (package
 264       (name "eschalot")
 265       (version (string-append "1.2.0-" revision "." (string-take commit 7)))
 266       (source
 267        (origin
 268          (method git-fetch)
 269          (uri (git-reference
 270                (url "https://github.com/schnabear/eschalot")
 271                (commit commit)))
 272          (file-name (string-append name "-" version))
 273          (sha256
 274           (base32
 275            "0lj38ldh8vzi11wp4ghw4k0fkwp0s04zv8k8d473p1snmbh7mx98"))))
 276       (inputs
 277        `(("openssl" ,openssl))) ; It needs: openssl/{bn,pem,rsa,sha}.h
 278       (build-system gnu-build-system)
 279       (arguments
 280        `(#:make-flags (list "CC=gcc"
 281                             (string-append "PREFIX=" (assoc-ref %outputs "out"))
 282                             (string-append "INSTALL=" "install"))
 283          ;; XXX: make test would run a !VERY! long hashing of names with the use
 284          ;; of a wordlist, the amount of computing time this would waste on build
 285          ;; servers is in no relation to the size or importance of this small
 286          ;; application, therefore we run our own tests on eschalot and worgen.
 287          #:phases
 288          (modify-phases %standard-phases
 289            (delete 'configure)
 290            (replace 'check
 291              (lambda _
 292                (and
 293                  (zero? (system* "./worgen" "8-12" "top1000.txt" "3-10" "top400nouns.txt"
 294                                  "3-6" "top150adjectives.txt" "3-6"))
 295                  (zero? (system* "./eschalot" "-r" "^guix|^guixsd"))
 296                  (zero? (system* "./eschalot" "-r" "^gnu|^free"))
 297                  (zero? (system* "./eschalot" "-r" "^cyber|^hack"))
 298                  (zero? (system* "./eschalot" "-r" "^troll")))))
 299            ;; Make install can not create the bin dir, create it.
 300            (add-before 'install 'create-bin-dir
 301              (lambda* (#:key outputs #:allow-other-keys)
 302                (let* ((out (assoc-ref outputs "out"))
 303                       (bin (string-append out "/bin")))
 304                  (mkdir-p bin)
 305                  #t))))))
 306       (home-page "https://github.com/schnabear/eschalot")
 307       (synopsis "Tor hidden service name generator")
 308       (description
 309        "Eschalot is a tor hidden service name generator, it allows one to
 310 produce customized vanity .onion addresses using a brute-force method.  Searches
 311 for valid names can be run with regular expressions and wordlists.  For the
 312 generation of wordlists the included tool @code{worgen} can be used.  There is
 313 no man page, refer to the home page for usage details.")
 314       (license (list license:isc license:expat)))))
 315
 316 (define-public tomb
 317   (package
 318     (name "tomb")
 319     (version "2.4")
 320     (source (origin
 321               (method url-fetch)
 322               (uri (string-append "https://files.dyne.org/tomb/"
 323                                   "Tomb-" version ".tar.gz"))
 324               (sha256
 325                (base32
 326                 "1hv1w79as7swqj0n137vz8n8mwvcgwlvd91sdyssz41jarg7f1vr"))))
 327     (build-system gnu-build-system)
 328     (native-inputs `(("sudo" ,sudo)))   ;presence needed for 'check' phase
 329     (inputs
 330      `(("zsh" ,zsh)
 331        ("gnupg" ,gnupg)
 332        ("cryptsetup" ,cryptsetup)
 333        ("e2fsprogs" ,e2fsprogs)         ;for mkfs.ext4
 334        ("gettext" ,gettext-minimal)     ;used at runtime
 335        ("mlocate" ,mlocate)
 336        ("pinentry" ,pinentry)
 337        ("qrencode" ,qrencode)
 338        ("steghide" ,steghide)))
 339     (arguments
 340      `(#:make-flags (list (string-append "PREFIX=" (assoc-ref %outputs "out")))
 341        ;; TODO: Build and install gtk and qt trays
 342        #:phases
 343        (modify-phases %standard-phases
 344          (delete 'configure)   ;no configuration to be done
 345          (add-after 'install 'i18n
 346            (lambda* (#:key make-flags #:allow-other-keys)
 347              (zero? (apply system*
 348                            "make" "-C" "extras/translations"
 349                            "install" make-flags))))
 350          (add-after 'install 'wrap
 351            (lambda* (#:key inputs outputs #:allow-other-keys)
 352              (let ((out (assoc-ref outputs "out")))
 353                (wrap-program (string-append out "/bin/tomb")
 354                  `("PATH" ":" prefix
 355                    (,(string-append (assoc-ref inputs "mlocate") "/bin")
 356                     ,@(map (lambda (program)
 357                              (or (and=> (which program) dirname)
 358                                  (error "program not found:" program)))
 359                            '("seq" "mkfs.ext4" "pinentry" "sudo"
 360                              "gpg" "cryptsetup" "gettext"
 361                              "qrencode" "steghide")))))
 362                #t)))
 363          (delete 'check)
 364          (add-after 'wrap 'check
 365            (lambda* (#:key outputs #:allow-other-keys)
 366              ;; Running the full tests requires sudo/root access for
 367              ;; cryptsetup, which is not available in the build environment.
 368              ;; But we can run `tomb dig` without root, so make sure that
 369              ;; works.  TODO: It Would Be Nice to check the expected "index",
 370              ;; "search", "bury", and "exhume" features are available by
 371              ;; querying `tomb -h`.
 372              (let ((tomb (string-append (assoc-ref outputs "out")
 373                                         "/bin/tomb")))
 374                (zero? (system* tomb "dig" "-s" "10" "secrets.tomb"))))))))
 375     (home-page "http://www.dyne.org/software/tomb")
 376     (synopsis "File encryption for secret data")
 377     (description
 378      "Tomb is an application to manage the creation and access of encrypted
 379 storage files: it can be operated from commandline and it can integrate with a
 380 user's graphical desktop.")
 381     (license license:gpl3+)))
 382
 383 (define-public scrypt
 384   (package
 385     (name "scrypt")
 386     (version "1.2.1")
 387     (source
 388       (origin
 389         (method url-fetch)
 390         (uri (string-append "https://www.tarsnap.com/scrypt/scrypt-"
 391                             version ".tgz"))
 392         (sha256
 393          (base32
 394           "0xy5yhrwwv13skv9im9vm76rybh9f29j2dh4hlh2x01gvbkza8a6"))))
 395     (build-system gnu-build-system)
 396     (arguments
 397      `(#:phases (modify-phases %standard-phases
 398         (add-after 'unpack 'patch-command-invocations
 399           (lambda _
 400             (substitute* "Makefile.in"
 401               (("command -p") ""))
 402             #t))
 403         (add-after 'install 'install-docs
 404           (lambda* (#:key outputs #:allow-other-keys)
 405             (let* ((out (assoc-ref %outputs "out"))
 406                    (misc (string-append out "/share/doc/scrypt")))
 407               (install-file "FORMAT" misc)
 408               #t))))))
 409     (inputs
 410      `(("openssl" ,openssl)))
 411     (home-page "https://www.tarsnap.com/scrypt.html")
 412     (synopsis "Memory-hard encryption tool based on scrypt")
 413     (description "This packages provides a simple password-based encryption
 414 utility as a demonstration of the @code{scrypt} key derivation function.
 415 @code{Scrypt} is designed to be far more resistant against hardware brute-force
 416 attacks than alternative functions such as @code{PBKDF2} or @code{bcrypt}.")
 417     (license license:bsd-2)))
 418
 419 (define-public python-asn1crypto
 420   (package
 421     (name "python-asn1crypto")
 422     (version "0.22.0")
 423     (source
 424       (origin
 425         (method url-fetch)
 426         (uri (string-append "https://github.com/wbond/asn1crypto/archive/"
 427                             version ".tar.gz"))
 428         (sha256
 429          (base32
 430           "1kn910896l3knmilla1c9ly20q181s43w1ah08lzkbm1h3j6pcz0"))))
 431     (build-system python-build-system)
 432     (home-page "https://github.com/wbond/asn1crypto")
 433     (synopsis "ASN.1 parser and serializer in Python")
 434     (description "asn1crypto is an ASN.1 parser and serializer with definitions
 435 for private keys, public keys, certificates, CRL, OCSP, CMS, PKCS#3, PKCS#7,
 436 PKCS#8, PKCS#12, PKCS#5, X.509 and TSP.")
 437     (license license:expat)))
 438
 439 (define-public python2-asn1crypto
 440   (package-with-python2 python-asn1crypto))
 441
 442 (define-public perl-math-random-isaac-xs
 443   (package
 444     (name "perl-math-random-isaac-xs")
 445     (version "1.004")
 446     (source
 447      (origin
 448        (method url-fetch)
 449        (uri (string-append "mirror://cpan/authors/id/J/JA/JAWNSY/"
 450                            "Math-Random-ISAAC-XS-" version ".tar.gz"))
 451        (sha256
 452         (base32
 453          "0yxqqcqvj51fn7b7j5xqhz65v74arzgainn66c6k7inijbmr1xws"))))
 454     (build-system perl-build-system)
 455     (native-inputs
 456      `(("perl-module-build" ,perl-module-build)
 457        ("perl-test-nowarnings" ,perl-test-nowarnings)))
 458     (home-page "http://search.cpan.org/dist/Math-Random-ISAAC-XS")
 459     (synopsis "C implementation of the ISAAC PRNG algorithm")
 460     (description "ISAAC (Indirection, Shift, Accumulate, Add, and Count) is a
 461 fast pseudo-random number generator.  It is suitable for applications where a
 462 significant amount of random data needs to be produced quickly, such as
 463 solving using the Monte Carlo method or for games.  The results are uniformly
 464 distributed, unbiased, and unpredictable unless you know the seed.
 465
 466 This package implements the same interface as @code{Math::Random::ISAAC}.")
 467     (license license:public-domain)))
 468
 469 (define-public perl-math-random-isaac
 470   (package
 471     (name "perl-math-random-isaac")
 472     (version "1.004")
 473     (source
 474      (origin
 475        (method url-fetch)
 476        (uri (string-append "mirror://cpan/authors/id/J/JA/JAWNSY/"
 477                            "Math-Random-ISAAC-" version ".tar.gz"))
 478        (sha256
 479         (base32
 480          "0z1b3xbb3xz71h25fg6jgsccra7migq7s0vawx2rfzi0pwpz0wr7"))))
 481     (build-system perl-build-system)
 482     (native-inputs
 483      `(("perl-test-nowarnings" ,perl-test-nowarnings)))
 484     (propagated-inputs
 485      `(("perl-math-random-isaac-xs" ,perl-math-random-isaac-xs)))
 486     (home-page "http://search.cpan.org/dist/Math-Random-ISAAC")
 487     (synopsis "Perl interface to the ISAAC PRNG algorithm")
 488     (description "ISAAC (Indirection, Shift, Accumulate, Add, and Count) is a
 489 fast pseudo-random number generator.  It is suitable for applications where a
 490 significant amount of random data needs to be produced quickly, such as
 491 solving using the Monte Carlo method or for games.  The results are uniformly
 492 distributed, unbiased, and unpredictable unless you know the seed.
 493
 494 This package provides a Perl interface to the ISAAC pseudo random number
 495 generator.")
 496     (license license:public-domain)))
 497
 498 (define-public perl-crypt-random-source
 499   (package
 500     (name "perl-crypt-random-source")
 501     (version "0.12")
 502     (source
 503      (origin
 504        (method url-fetch)
 505        (uri (string-append "mirror://cpan/authors/id/E/ET/ETHER/"
 506                            "Crypt-Random-Source-" version ".tar.gz"))
 507        (sha256
 508         (base32
 509          "00mw5m52sbz9nqp3f6axyrgcrihqxn7k8gv0vi1kvm1j1nc9g29h"))))
 510     (build-system perl-build-system)
 511     (native-inputs
 512      `(("perl-module-build-tiny" ,perl-module-build-tiny)
 513        ("perl-test-exception" ,perl-test-exception)))
 514     (propagated-inputs
 515      `(("perl-capture-tiny" ,perl-capture-tiny)
 516        ("perl-module-find" ,perl-module-find)
 517        ("perl-module-runtime" ,perl-module-runtime)
 518        ("perl-moo" ,perl-moo)
 519        ("perl-namespace-clean" ,perl-namespace-clean)
 520        ("perl-sub-exporter" ,perl-sub-exporter)
 521        ("perl-type-tiny" ,perl-type-tiny)))
 522     (home-page "http://search.cpan.org/dist/Crypt-Random-Source")
 523     (synopsis "Get weak or strong random data from pluggable sources")
 524     (description "This module provides implementations for a number of
 525 byte-oriented sources of random data.")
 526     (license (package-license perl))))
 527
 528 (define-public perl-math-random-secure
 529   (package
 530     (name "perl-math-random-secure")
 531     (version "0.080001")
 532     (source
 533      (origin
 534        (method url-fetch)
 535        (uri (string-append "mirror://cpan/authors/id/F/FR/FREW/"
 536                            "Math-Random-Secure-" version ".tar.gz"))
 537        (sha256
 538         (base32
 539          "0dgbf4ncll4kmgkyb9fsaxn0vf2smc9dmwqzgh3259zc2zla995z"))))
 540     (build-system perl-build-system)
 541     (native-inputs
 542      `(("perl-list-moreutils" ,perl-list-moreutils)
 543        ("perl-test-leaktrace" ,perl-test-leaktrace)
 544        ("perl-test-sharedfork" ,perl-test-sharedfork)
 545        ("perl-test-warn" ,perl-test-warn)))
 546     (inputs
 547      `(("perl-crypt-random-source" ,perl-crypt-random-source)
 548        ("perl-math-random-isaac" ,perl-math-random-isaac)
 549        ("perl-math-random-isaac-xs" ,perl-math-random-isaac-xs)
 550        ("perl-moo" ,perl-moo)))
 551     (home-page "http://search.cpan.org/dist/Math-Random-Secure")
 552     (synopsis "Cryptographically secure replacement for rand()")
 553     (description "This module is intended to provide a
 554 cryptographically-secure replacement for Perl's built-in @code{rand} function.
 555 \"Crytographically secure\", in this case, means:
 556
 557 @enumerate
 558 @item No matter how many numbers you see generated by the random number
 559 generator, you cannot guess the future numbers, and you cannot guess the seed.
 560 @item There are so many possible seeds that it would take decades, centuries,
 561 or millenia for an attacker to try them all.
 562 @item The seed comes from a source that generates relatively strong random
 563 data on your platform, so the seed itself will be as random as possible.
 564 @end enumerate\n")
 565     (license license:artistic2.0)))