summaryrefslogtreecommitdiff
path: root/gnu/packages/crypto.scm
blob: f48ab50ca97e9086a518fa386d0de4f42eb06c2c (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2014 David Thompson <davet@gnu.org>
;;; Copyright © 2015, 2017, 2018, 2019 Ricardo Wurmus <rekado@elephly.net>
;;; Copyright © 2016, 2017, 2018, 2019 Leo Famulari <leo@famulari.name>
;;; Copyright © 2016 Lukas Gradl <lgradl@openmailbox>
;;; Copyright © 2016, 2017, 2018, 2019, 2020 Tobias Geerinckx-Rice <me@tobias.gr>
;;; Copyright © 2016, 2017 ng0 <ng0@n0.is>
;;; Copyright © 2016, 2017, 2019 Eric Bavier <bavier@member.fsf.org>
;;; Copyright © 2017 Pierre Langlois <pierre.langlois@gmx.com>
;;; Copyright © 2018 Efraim Flashner <efraim@flashner.co.il>
;;; Copyright © 2018 Arun Isaac <arunisaac@systemreboot.net>
;;; Copyright © 2018 Nicolas Goaziou <mail@nicolasgoaziou.fr>
;;; Copyright © 2018, 2020 Nicolò Balzarotti <nicolo@nixo.xyz>
;;; Copyright © 2018 Tim Gesthuizen <tim.gesthuizen@yahoo.de>
;;; Copyright © 2019 Pierre Neidhardt <mail@ambrevar.xyz>
;;; Copyright © 2019 Tanguy Le Carrour <tanguy@bioneland.org>
;;; Copyright © 2020 Jakub Kądziołka <kuba@kadziolka.net>
;;;
;;; 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 crypto)
  #:use-module (gnu packages)
  #:use-module (gnu packages admin)
  #:use-module (gnu packages aidc)
  #:use-module (gnu packages attr)
  #:use-module (gnu packages autotools)
  #:use-module (gnu packages boost)
  #:use-module (gnu packages check)
  #:use-module (gnu packages compression)
  #:use-module (gnu packages cryptsetup)
  #:use-module (gnu packages gettext)
  #:use-module (gnu packages gnupg)
  #:use-module (gnu packages image)
  #:use-module (gnu packages kerberos)
  #:use-module (gnu packages libbsd)
  #:use-module (gnu packages libffi)
  #:use-module (gnu packages linux)
  #:use-module (gnu packages lsof)
  #:use-module (gnu packages nettle)
  #:use-module (gnu packages password-utils)
  #:use-module (gnu packages perl)
  #:use-module (gnu packages perl-check)
  #:use-module (gnu packages pkg-config)
  #:use-module (gnu packages python)
  #:use-module (gnu packages python-xyz)
  #:use-module (gnu packages readline)
  #:use-module (gnu packages search)
  #:use-module (gnu packages serialization)
  #:use-module (gnu packages shells)
  #:use-module (gnu packages sqlite)
  #:use-module (gnu packages tcl)
  #:use-module (gnu packages tls)
  #:use-module (gnu packages xml)
  #:use-module ((guix licenses) #:prefix license:)
  #:use-module (guix packages)
  #:use-module (guix download)
  #:use-module (guix git-download)
  #:use-module (guix build-system cmake)
  #:use-module (guix build-system gnu)
  #:use-module (guix build-system perl)
  #:use-module (guix utils)
  #:use-module (srfi srfi-1)
  #:use-module (srfi srfi-26))

(define-public libsodium
  (package
    (name "libsodium")
    (version "1.0.18")
    (source (origin
            (method url-fetch)
            (uri (list (string-append
                        "https://download.libsodium.org/libsodium/"
                        "releases/libsodium-" version ".tar.gz")
                       (string-append
                        "https://download.libsodium.org/libsodium/"
                        "releases/old/libsodium-" version ".tar.gz")))
            (sha256
             (base32
              "1h9ncvj23qbbni958knzsli8dvybcswcjbx0qjjgi922nf848l3g"))))
    (build-system gnu-build-system)
    (synopsis "Portable NaCl-based crypto library")
    (description
     "Sodium is a new easy-to-use high-speed software library for network
communication, encryption, decryption, signatures, etc.")
    (license license:isc)
    (home-page "https://libsodium.org")))

(define-public libmd
  (package
    (name "libmd")
    (version "1.0.1")
    (source (origin
            (method url-fetch)
            (uri
             (list
              (string-append "https://archive.hadrons.org/software/libmd/libmd-"
                             version ".tar.xz")
              (string-append "https://libbsd.freedesktop.org/releases/libmd-"
                             version ".tar.xz")))
            (sha256
             (base32
              "0waclg2d5qin3r26gy5jvy4584ik60njc8pqbzwk0lzq3j9ynkp1"))))
    (build-system gnu-build-system)
    (synopsis "Message Digest functions from BSD systems")
    (description
     "The currently provided message digest algorithms are:
@itemize
@item MD2
@item MD4
@item MD5
@item RIPEMD-160
@item SHA-1
@item SHA-2 (SHA-256, SHA-384 and SHA-512)
@end itemize")
    (license (list license:bsd-3
                   license:bsd-2
                   license:isc
                   license:public-domain))
    (home-page "https://www.hadrons.org/software/libmd/")))

(define-public signify
  (package
    (name "signify")
    (version "29")
    (home-page "https://github.com/aperezdc/signify")
    (source (origin
              (method url-fetch)
              (uri (string-append "https://github.com/aperezdc/signify/releases"
                                  "/download/v" version "/signify-" version ".tar.xz"))
              (sha256
               (base32
                "1bzcax5kb4lr0rmpmrdpq5q0iq6b2dxzpl56li8aanbkck1c7hd9"))))
    (build-system gnu-build-system)
    ;; TODO Build with libwaive (described in README.md), to implement something
    ;; like OpenBSD's pledge().
    (arguments
     `(#:make-flags
       (list "CC=gcc"
             (string-append "PREFIX=" (assoc-ref %outputs "out")))
       #:phases
       (modify-phases %standard-phases
         (delete 'configure))))
    (native-inputs
     `(("pkg-config" ,pkg-config)))
    (inputs
     `(("libbsd" ,libbsd)))
    (synopsis "Create and verify cryptographic signatures")
    (description "The signify utility creates and verifies cryptographic
signatures using the elliptic curve Ed25519.  This is a Linux port of the
OpenBSD tool of the same name.")
    ;; This package includes third-party code that was originally released under
    ;; various non-copyleft licenses. See the source files for clarification.
    (license (list license:bsd-3 license:bsd-4 license:expat license:isc
                   license:public-domain (license:non-copyleft
                                          "file://base64.c"
                                          "See base64.c in the distribution for
                                           the license from IBM.")))))

(define-public encfs
  (package
    (name "encfs")
    (version "1.9.5")
    (source
     (origin
       (method url-fetch)
       (uri
        (string-append "https://github.com/vgough/encfs/releases/download/v"
                       version "/encfs-" version ".tar.gz"))
       (sha256
        (base32
         "0qzxavvv20577bxvly8s7d3y7bqasqclc2mllp0ddfncjm9z02a7"))
       (modules '((guix build utils)))
       ;; Remove bundled dependencies in favour of proper inputs.
       (snippet '(begin
                   (for-each delete-file-recursively
                             '("vendor/github.com/leethomason/tinyxml2"
                               "vendor/github.com/google/googletest"))
                   #t))))
    (build-system cmake-build-system)
    (native-inputs
     `(("gettext" ,gettext-minimal)

       ;; Test dependencies.
       ("expect" ,expect)
       ("googletest-source" ,(package-source googletest))
       ("perl" ,perl)))
    (inputs
     `(("attr" ,attr)
       ("fuse" ,fuse)
       ("openssl" ,openssl)
       ("tinyxml2" ,tinyxml2)))
    (arguments
     `(#:configure-flags (list "-DUSE_INTERNAL_TINYXML=OFF")
       #:phases
       (modify-phases %standard-phases
         (add-after 'unpack 'unpack-googletest
           (lambda* (#:key inputs #:allow-other-keys)
             (mkdir-p "vendor/github.com/google/googletest")
             (copy-recursively (assoc-ref inputs "googletest-source")
                               "vendor/github.com/google/googletest")
             #t))
         (add-before 'configure 'patch-CMakeLists.txt
           (lambda _
             ;; Prevent CMake from adding libc on the system include path.
             ;; Otherwise it will interfere with the libc used by GCC and
             ;; ultimately cause #include_next errors.
             (substitute* "CMakeLists.txt"
               (("include_directories \\(SYSTEM \\$\\{Intl_INCLUDE_DIRS\\}\\)")
                ""))
             #t))
         (add-before 'check 'make-unittests
           (lambda _
             (invoke "make" "unittests"))))))
    (home-page "https://vgough.github.io/encfs")
    (synopsis "Encrypted virtual file system")
    (description
     "EncFS creates a virtual encrypted file system in user-space.  Each file
created under an EncFS mount point is stored as a separate encrypted file on
the underlying file system.  Like most encrypted file systems, EncFS is meant
to provide security against off-line attacks, such as a drive falling into
the wrong hands.")
    (license (list license:expat                  ; internal/easylogging++.h
                   license:lgpl3+                 ; encfs library
                   license:gpl3+))))              ; command-line tools

(define-public keyutils
  (package
    (name "keyutils")
    (version "1.6.1")
    (source
     (origin
       (method url-fetch)
       (uri
        (string-append "https://people.redhat.com/dhowells/keyutils/keyutils-"
                       version ".tar.bz2"))
       (sha256
        (base32 "1kk4pmyflgplkgxn2bzpc069ph9c9jdd9ikcsyd5pnaimqi5gcf8"))
       (modules '((guix build utils)))
       ;; Create relative symbolic links instead of absolute ones to /lib/*.
       (snippet '(begin
                   (substitute* "Makefile" (("\\$\\(LNS\\) \\$\\(LIBDIR\\)/")
                                            "$(LNS) "))
                   #t))))
    (build-system gnu-build-system)
    (arguments
     `(#:phases (modify-phases %standard-phases
                  (delete 'configure))          ; no configure script
       #:make-flags (list "CC=gcc"
                          "RPATH=-Wl,-rpath,$(DESTDIR)$(LIBDIR)"
                          (string-append "DESTDIR="
                                         (assoc-ref %outputs "out"))
                          "INCLUDEDIR=/include"
                          "LIBDIR=/lib"
                          "MANDIR=/share/man"
                          "SHAREDIR=/share/keyutils")
       #:test-target "test"))
    (inputs
     `(("mit-krb5" ,mit-krb5)))
    (home-page "https://people.redhat.com/dhowells/keyutils/")
    (synopsis "Linux key management utilities")
    (description
     "Keyutils is a set of utilities for managing the key retention facility in
the Linux kernel, which can be used by file systems, block devices, and more to
gain and retain the authorization and encryption keys required to perform
secure operations. ")
    (license (list license:lgpl2.1+             ; the files keyutils.*
                   license:gpl2+))))            ; the rest

;; There is no release candidate but commits point out a version number,
;; furthermore no tarball exists.
(define-public eschalot
  (let ((commit "0bf31d88a11898c19b1ed25ddd2aff7b35dbac44")
        (revision "1"))
    (package
      (name "eschalot")
      (version (string-append "1.2.0-" revision "." (string-take commit 7)))
      (source
       (origin
         (method git-fetch)
         (uri (git-reference
               (url "https://github.com/schnabear/eschalot")
               (commit commit)))
         (file-name (string-append name "-" version))
         (sha256
          (base32
           "0lj38ldh8vzi11wp4ghw4k0fkwp0s04zv8k8d473p1snmbh7mx98"))))
      (inputs
       `(("openssl" ,openssl))) ; It needs: openssl/{bn,pem,rsa,sha}.h
      (build-system gnu-build-system)
      (arguments
       `(#:make-flags (list "CC=gcc"
                            (string-append "PREFIX=" (assoc-ref %outputs "out"))
                            (string-append "INSTALL=" "install"))
         ;; XXX: make test would run a !VERY! long hashing of names with the use
         ;; of a wordlist, the amount of computing time this would waste on build
         ;; servers is in no relation to the size or importance of this small
         ;; application, therefore we run our own tests on eschalot and worgen.
         #:phases
         (modify-phases %standard-phases
           (delete 'configure)
           (replace 'check
             (lambda _
               (invoke "./worgen" "8-12" "top1000.txt" "3-10" "top400nouns.txt"
                       "3-6" "top150adjectives.txt" "3-6")
               (invoke "./eschalot" "-r" "^guix|^guixsd")
               (invoke "./eschalot" "-r" "^gnu|^free")
               (invoke "./eschalot" "-r" "^cyber|^hack")
               (invoke "./eschalot" "-r" "^troll")))
           ;; Make install can not create the bin dir, create it.
           (add-before 'install 'create-bin-dir
             (lambda* (#:key outputs #:allow-other-keys)
               (let* ((out (assoc-ref outputs "out"))
                      (bin (string-append out "/bin")))
                 (mkdir-p bin)
                 #t))))))
      (home-page "https://github.com/schnabear/eschalot")
      (synopsis "Tor hidden service name generator")
      (description
       "Eschalot is a tor hidden service name generator, it allows one to
produce customized vanity .onion addresses using a brute-force method.  Searches
for valid names can be run with regular expressions and wordlists.  For the
generation of wordlists the included tool @code{worgen} can be used.  There is
no man page, refer to the home page for usage details.")
      (license (list license:isc license:expat)))))

(define-public tomb
  (package
    (name "tomb")
    (version "2.7")
    (source (origin
              (method url-fetch)
              (uri (string-append "https://files.dyne.org/tomb/"
                                  "Tomb-" version ".tar.gz"))
              (sha256
               (base32
                "0x3al02796vx1cvy6y6h685c367qx70dwv471g0hmks2gr10f0cn"))
              (patches (search-patches "tomb-fix-errors-on-open.patch"))))
    (build-system gnu-build-system)
    (native-inputs `(("sudo" ,sudo)))   ;presence needed for 'check' phase
    (inputs
     `(("zsh" ,zsh)
       ("gnupg" ,gnupg)
       ("cryptsetup" ,cryptsetup)
       ("e2fsprogs" ,e2fsprogs)         ;for mkfs.ext4
       ("gettext" ,gettext-minimal)     ;used at runtime
       ("lsof" ,lsof)
       ("mlocate" ,mlocate)
       ("pinentry" ,pinentry)
       ("qrencode" ,qrencode)
       ("steghide" ,steghide)
       ("util-linux" ,util-linux)))
    (arguments
     `(#:make-flags (list (string-append "PREFIX=" (assoc-ref %outputs "out")))
       ;; The "sudo" input is needed only to satisfy dependency checks in the
       ;; 'check' phase.  The "sudo" used at runtime should come from the
       ;; system's setuid-programs, so ensure no reference is kept.
       #:disallowed-references (,sudo)
       ;; TODO: Build and install gtk and qt trays
       #:phases
       (modify-phases %standard-phases
         (delete 'configure)            ;no configuration to be done
         (add-after 'install 'i18n
           (lambda* (#:key make-flags #:allow-other-keys)
             (apply invoke "make" "-C" "extras/translations"
                    "install" make-flags)
             #t))
         (add-after 'install 'wrap
           (lambda* (#:key inputs outputs #:allow-other-keys)
             (let ((out (assoc-ref outputs "out")))
               (wrap-program (string-append out "/bin/tomb")
                 `("PATH" ":" prefix
                   (,(string-append (assoc-ref inputs "mlocate") "/bin")
                    ,@(map (lambda (program)
                             (or (and=> (which program) dirname)
                                 (error "program not found:" program)))
                           '("seq" "mkfs.ext4" "pinentry"
                             "gpg" "cryptsetup" "gettext" "lsof"
                             "qrencode" "steghide" "findmnt")))))
               #t)))
         (delete 'check)
         (add-after 'wrap 'check
           (lambda* (#:key outputs #:allow-other-keys)
             ;; Running the full tests requires sudo/root access for
             ;; cryptsetup, which is not available in the build environment.
             ;; But we can run `tomb dig` without root, so make sure that
             ;; works.  TODO: It Would Be Nice to check the expected "index",
             ;; "search", "bury", and "exhume" features are available by
             ;; querying `tomb -h`.
             (let ((tomb (string-append (assoc-ref outputs "out")
                                        "/bin/tomb")))
               (invoke tomb "dig" "-s" "10" "secrets.tomb")
               #t))))))
    (home-page "https://www.dyne.org/software/tomb")
    (synopsis "File encryption for secret data")
    (description
     "Tomb is an application to manage the creation and access of encrypted
storage files: it can be operated from commandline and it can integrate with a
user's graphical desktop.")
    (license license:gpl3+)))

(define-public scrypt
  (package
    (name "scrypt")
    (version "1.2.1")
    (source
      (origin
        (method url-fetch)
        (uri (string-append "https://www.tarsnap.com/scrypt/scrypt-"
                            version ".tgz"))
        (sha256
         (base32
          "0xy5yhrwwv13skv9im9vm76rybh9f29j2dh4hlh2x01gvbkza8a6"))))
    (build-system gnu-build-system)
    (arguments
     `(#:phases (modify-phases %standard-phases
        (add-after 'unpack 'patch-command-invocations
          (lambda _
            (substitute* "Makefile.in"
              (("command -p") ""))
            #t))
        (add-after 'install 'install-docs
          (lambda* (#:key outputs #:allow-other-keys)
            (let* ((out (assoc-ref %outputs "out"))
                   (misc (string-append out "/share/doc/scrypt")))
              (install-file "FORMAT" misc)
              #t))))))
    (inputs
     `(("openssl" ,openssl)))
    (home-page "https://www.tarsnap.com/scrypt.html")
    (synopsis "Memory-hard encryption tool based on scrypt")
    (description "This package provides a simple password-based encryption
utility as a demonstration of the @code{scrypt} key derivation function.
@code{Scrypt} is designed to be far more resistant against hardware brute-force
attacks than alternative functions such as @code{PBKDF2} or @code{bcrypt}.")
    (license license:bsd-2)))

(define-public libscrypt
  (package
    (name "libscrypt")
    (version "1.21")
    (source
     (origin
       (method git-fetch)
       (uri (git-reference
             (url "https://github.com/technion/libscrypt.git")
             (commit (string-append "v" version))))
       (file-name (git-file-name name version))
       (sha256
        (base32
         "1d76ys6cp7fi4ng1w3mz2l0p9dbr7ljbk33dcywyimzjz8bahdng"))))
    (build-system gnu-build-system)
    (arguments
     `(#:make-flags (list (string-append "PREFIX=" %output)
                          "CC=gcc")
       #:phases
       (modify-phases %standard-phases
         (delete 'configure))))
    (home-page "https://lolware.net/libscrypt.html")
    (synopsis "Password hashing library")
    (description "@code{libscrypt} implements @code{scrypt} key derivation
function.  It is designed to be far more secure against hardware brute-force
attacks than alternative functions such as @code{PBKDF2} or @code{bcrypt}.")
    (license license:bsd-3)))

(define-public perl-math-random-isaac-xs
  (package
    (name "perl-math-random-isaac-xs")
    (version "1.004")
    (source
     (origin
       (method url-fetch)
       (uri (string-append "mirror://cpan/authors/id/J/JA/JAWNSY/"
                           "Math-Random-ISAAC-XS-" version ".tar.gz"))
       (sha256
        (base32
         "0yxqqcqvj51fn7b7j5xqhz65v74arzgainn66c6k7inijbmr1xws"))))
    (build-system perl-build-system)
    (native-inputs
     `(("perl-module-build" ,perl-module-build)
       ("perl-test-nowarnings" ,perl-test-nowarnings)))
    (home-page "https://metacpan.org/release/Math-Random-ISAAC-XS")
    (synopsis "C implementation of the ISAAC PRNG algorithm")
    (description "ISAAC (Indirection, Shift, Accumulate, Add, and Count) is a
fast pseudo-random number generator.  It is suitable for applications where a
significant amount of random data needs to be produced quickly, such as
solving using the Monte Carlo method or for games.  The results are uniformly
distributed, unbiased, and unpredictable unless you know the seed.

This package implements the same interface as @code{Math::Random::ISAAC}.")
    (license license:public-domain)))

(define-public perl-math-random-isaac
  (package
    (name "perl-math-random-isaac")
    (version "1.004")
    (source
     (origin
       (method url-fetch)
       (uri (string-append "mirror://cpan/authors/id/J/JA/JAWNSY/"
                           "Math-Random-ISAAC-" version ".tar.gz"))
       (sha256
        (base32
         "0z1b3xbb3xz71h25fg6jgsccra7migq7s0vawx2rfzi0pwpz0wr7"))))
    (build-system perl-build-system)
    (native-inputs
     `(("perl-test-nowarnings" ,perl-test-nowarnings)))
    (propagated-inputs
     `(("perl-math-random-isaac-xs" ,perl-math-random-isaac-xs)))
    (home-page "https://metacpan.org/release/Math-Random-ISAAC")
    (synopsis "Perl interface to the ISAAC PRNG algorithm")
    (description "ISAAC (Indirection, Shift, Accumulate, Add, and Count) is a
fast pseudo-random number generator.  It is suitable for applications where a
significant amount of random data needs to be produced quickly, such as
solving using the Monte Carlo method or for games.  The results are uniformly
distributed, unbiased, and unpredictable unless you know the seed.

This package provides a Perl interface to the ISAAC pseudo random number
generator.")
    (license license:public-domain)))

(define-public perl-crypt-random-source
  (package
    (name "perl-crypt-random-source")
    (version "0.14")
    (source
     (origin
       (method url-fetch)
       (uri (string-append "mirror://cpan/authors/id/E/ET/ETHER/"
                           "Crypt-Random-Source-" version ".tar.gz"))
       (sha256
        (base32 "1rpdds3sy5l1fhngnkrsgwsmwd54wpicx3i9ds69blcskwkcwkpc"))))
    (build-system perl-build-system)
    (native-inputs
     `(("perl-module-build-tiny" ,perl-module-build-tiny)
       ("perl-test-fatal" ,perl-test-fatal)))
    (propagated-inputs
     `(("perl-capture-tiny" ,perl-capture-tiny)
       ("perl-module-find" ,perl-module-find)
       ("perl-module-runtime" ,perl-module-runtime)
       ("perl-moo" ,perl-moo)
       ("perl-namespace-clean" ,perl-namespace-clean)
       ("perl-sub-exporter" ,perl-sub-exporter)
       ("perl-type-tiny" ,perl-type-tiny)))
    (home-page "https://metacpan.org/release/Crypt-Random-Source")
    (synopsis "Get weak or strong random data from pluggable sources")
    (description "This module provides implementations for a number of
byte-oriented sources of random data.")
    (license license:perl-license)))

(define-public perl-math-random-secure
  (package
    (name "perl-math-random-secure")
    (version "0.080001")
    (source
     (origin
       (method url-fetch)
       (uri (string-append "mirror://cpan/authors/id/F/FR/FREW/"
                           "Math-Random-Secure-" version ".tar.gz"))
       (sha256
        (base32
         "0dgbf4ncll4kmgkyb9fsaxn0vf2smc9dmwqzgh3259zc2zla995z"))))
    (build-system perl-build-system)
    (native-inputs
     `(("perl-list-moreutils" ,perl-list-moreutils)
       ("perl-test-leaktrace" ,perl-test-leaktrace)
       ("perl-test-sharedfork" ,perl-test-sharedfork)
       ("perl-test-warn" ,perl-test-warn)))
    (inputs
     `(("perl-crypt-random-source" ,perl-crypt-random-source)
       ("perl-math-random-isaac" ,perl-math-random-isaac)
       ("perl-math-random-isaac-xs" ,perl-math-random-isaac-xs)
       ("perl-moo" ,perl-moo)))
    (home-page "https://metacpan.org/release/Math-Random-Secure")
    (synopsis "Cryptographically secure replacement for rand()")
    (description "This module is intended to provide a
cryptographically-secure replacement for Perl's built-in @code{rand} function.
\"Crytographically secure\", in this case, means:

@enumerate
@item No matter how many numbers you see generated by the random number
generator, you cannot guess the future numbers, and you cannot guess the seed.
@item There are so many possible seeds that it would take decades, centuries,
or millennia for an attacker to try them all.
@item The seed comes from a source that generates relatively strong random
data on your platform, so the seed itself will be as random as possible.
@end enumerate\n")
    (license license:artistic2.0)))

(define-public crypto++
  (package
    (name "crypto++")
    (version "8.2.0")
    (source (origin
              (method url-fetch/zipbomb)
              (uri (string-append "https://cryptopp.com/cryptopp"
                                  (string-join (string-split version #\.) "")
                                  ".zip"))
              (sha256
               (base32
                "0n40hlz5jkvlcp9vxrj0fsrcfp7dm0zmmv6h52dx3f8i5qjf5w03"))))
    (build-system gnu-build-system)
    (arguments
     `(#:make-flags
       (list (string-append "PREFIX=" (assoc-ref %outputs "out"))
             ;; Override "/sbin/ldconfig" with simply "echo" since
             ;; we don't need ldconfig(8).
             "LDCONF=echo")
       #:phases
       (modify-phases %standard-phases
         (add-after 'unpack 'disable-native-optimisation
           ;; This package installs more than just headers.  Ensure that the
           ;; cryptest.exe binary & static library aren't CPU model specific.
           (lambda _
             (substitute* "GNUmakefile"
               ((" -march=native") ""))
             #t))
         (delete 'configure)
         (replace 'build
           ;; By default, only the static library is built.
           (lambda* (#:key (make-flags '()) #:allow-other-keys)
             (apply invoke "make" "shared"
                    "-j" (number->string (parallel-job-count))
                    make-flags)))
         (add-after 'install 'install-shared-library-links
           ;; By default, only .so and .so.x.y.z are installed.
           ;; Create all the ‘intermediates’ expected by dependent packages.
           (lambda* (#:key outputs #:allow-other-keys)
             (let* ((out (assoc-ref outputs "out"))
                    (lib (string-append out "/lib"))
                    (prefix "libcryptopp.so.")
                    (target (string-append prefix ,version)))
               (with-directory-excursion lib
                 (symlink target
                          (string-append prefix ,(version-major+minor version)))
                 (symlink target
                          (string-append prefix ,(version-major version)))
                 #t))))
         (add-after 'install 'install-pkg-config
           (lambda* (#:key outputs #:allow-other-keys)
             (let* ((out (assoc-ref outputs "out"))
                    (pkg-dir (string-append out "/lib/pkgconfig")))
               (mkdir-p pkg-dir)
               (with-output-to-file (string-append pkg-dir "/libcrypto++.pc")
                 (lambda _
                   (display
                    (string-append
                     "prefix=" out "\n"
                     "libdir=" out "/lib\n"
                     "includedir=" out "/include\n\n"
                     "Name: libcrypto++-" ,version "\n"
                     "Description: Class library of cryptographic schemes"
                     "Version: " ,version "\n"
                     "Libs: -L${libdir} -lcryptopp\n"
                     "Cflags: -I${includedir}\n"))
                   #t))))))))
    (native-inputs
     `(("unzip" ,unzip)))
    (home-page "https://cryptopp.com/")
    (synopsis "C++ class library of cryptographic schemes")
    (description "Crypto++ is a C++ class library of cryptographic schemes.")
    ;; The compilation is distributed under the Boost license; the individual
    ;; files in the compilation are in the public domain.
    (license (list license:boost1.0 license:public-domain))))

(define-public libb2
  (package
    (name "libb2")
    (version "0.98.1")
    (source (origin
              (method url-fetch)
              (uri (string-append
                    "https://github.com/BLAKE2/libb2/releases/download/v"
                    version "/libb2-" version ".tar.gz"))
              (sha256
               (base32
                "0bn7yrzdixdvzm46shbhpkqbr6zyqyxiqn7a7x54ag3mrvfnyqjk"))))
    (build-system gnu-build-system)
    (arguments
     `(#:configure-flags
       (list
        ,@(if (any (cute string-prefix? <> (or (%current-system)
                                               (%current-target-system)))
                   '("x86_64" "i686"))
              ;; fat only checks for Intel optimisations
              '("--enable-fat")
              '())
        "--disable-native")))           ;don't optimise at build time
    (home-page "https://blake2.net/")
    (synopsis "Library implementing the BLAKE2 family of hash functions")
    (description
     "libb2 is a portable implementation of the BLAKE2 family of cryptographic
hash functions.  It includes optimised implementations for IA-32 and AMD64
processors, and an interface layer that automatically selects the best
implementation for the processor it is run on.

@dfn{BLAKE2} (RFC 7693) is a family of high-speed cryptographic hash functions
that are faster than MD5, SHA-1, SHA-2, and SHA-3, yet are at least as secure
as the latest standard, SHA-3.  It is an improved version of the SHA-3 finalist
BLAKE.")
    (license license:public-domain)))

(define-public rhash
  (package
    (name "rhash")
    (version "1.3.8")
    (source
     (origin
       (method url-fetch)
       (uri (string-append "https://github.com/rhash/RHash/archive/v"
                           version ".tar.gz"))
       (file-name (string-append name "-" version ".tar.gz"))
       (sha256
        (base32
         "0k60ywyhwqwqxa2q2l85vwgf884hcgy31nxir3dqgz7ymib6llxy"))))
    (build-system gnu-build-system)
    (arguments
     `(#:make-flags
       ;; The binaries in /bin need some help finding librhash.so.0.
       (list (string-append "LDFLAGS=-Wl,-rpath=" %output "/lib"))
       #:test-target "test"             ; ‘make check’ just checks the sources
       #:phases
       (modify-phases %standard-phases
         (replace 'configure
           ;; ./configure is not GNU autotools' and doesn't gracefully handle
           ;; unrecognized options, so we must call it manually.
           (lambda* (#:key outputs #:allow-other-keys)
             (invoke "./configure"
                     (string-append "--prefix=" (assoc-ref outputs "out")))))
         (add-after 'install 'install-library-extras
           (lambda* (#:key make-flags #:allow-other-keys)
             (apply invoke
                    "make" "-C" "librhash"
                    "install-lib-headers" "install-so-link"
                    make-flags))))))
    (home-page "https://sourceforge.net/projects/rhash/")
    (synopsis "Utility for computing hash sums")
    (description "RHash is a console utility for calculation and verification
of magnet links and a wide range of hash sums like CRC32, MD4, MD5, SHA1,
SHA256, SHA512, SHA3, AICH, ED2K, Tiger, DC++ TTH, BitTorrent BTIH, GOST R
34.11-94, RIPEMD-160, HAS-160, EDON-R, Whirlpool and Snefru.")
    (license (license:non-copyleft "file://COPYING"))))

(define-public botan
  (package
    (name "botan")
    (version "2.12.1")
    (source (origin
              (method url-fetch)
              (uri (string-append "https://botan.randombit.net/releases/"
                                  "Botan-" version ".tar.xz"))
              (sha256
               (base32
                "1ada3ga7b0z4m0vjmxlvfi4nsic2l8kjcy85jwss3z2i58a5y0vy"))))
    (build-system gnu-build-system)
    (arguments
     '(#:phases
       (modify-phases %standard-phases
         (replace 'configure
           (lambda* (#:key inputs outputs #:allow-other-keys)
             (let* ((out (assoc-ref %outputs "out"))
                    (lib (string-append out "/lib")))
               ;; Upstream tests and benchmarks with -O3.
               (setenv "CXXFLAGS" "-O3")
               (invoke "python" "./configure.py"
                       (string-append "--prefix=" out)
                       ;; Otherwise, the `botan` executable cannot find
                       ;; libbotan.
                       (string-append "--ldflags=-Wl,-rpath=" lib)

                       "--with-os-feature=getentropy"
                       "--with-rst2man"

                       ;; Recommended by upstream
                       "--with-zlib" "--with-bzip2" "--with-sqlite3"))))
         (replace 'check
           (lambda _ (invoke "./botan-test"))))))
    (native-inputs
     `(("python" ,python-wrapper)
       ("python-docutils" ,python-docutils)))
    (inputs
     `(("sqlite" ,sqlite)
       ("bzip2" ,bzip2)
       ("zlib" ,zlib)))
    (synopsis "Cryptographic library in C++11")
    (description "Botan is a cryptography library, written in C++11, offering
the tools necessary to implement a range of practical systems, such as TLS/DTLS,
PKIX certificate handling, PKCS#11 and TPM hardware support, password hashing,
and post-quantum crypto schemes.  In addition to the C++, botan has a C89 API
specifically designed to be easy to call from other languages.  A Python binding
using ctypes is included, and several other language bindings are available.")
    (home-page "https://botan.randombit.net")
    (license license:bsd-2)))

(define-public ccrypt
  (package
    (name "ccrypt")
    (version "1.11")
    (source (origin
              (method url-fetch)
              (uri (string-append "mirror://sourceforge/ccrypt/"
                                  version "/ccrypt-" version ".tar.gz"))
              (sha256
               (base32
                "0kx4a5mhmp73ljknl2lcccmw9z3f5y8lqw0ghaymzvln1984g75i"))))
    (build-system gnu-build-system)
    (home-page "http://ccrypt.sourceforge.net")
    (synopsis "Command-line utility for encrypting and decrypting files and streams")
    (description "@command{ccrypt} is a utility for encrypting and decrypting
files and streams.  It was designed as a replacement for the standard unix
@command{crypt} utility, which is notorious for using a very weak encryption
algorithm.  @command{ccrypt} is based on the Rijndael block cipher, a version of
which is also used in the Advanced Encryption Standard (AES, see
@url{http://www.nist.gov/aes}).  This cipher is believed to provide very strong
security.")
    (license license:gpl2)))

(define-public asignify
  (let ((commit "f58e7977a599f040797975d649ed318e25cbd2d5")
        (revision "0"))
    (package
      (name "asignify")
      (version (git-version "1.1" revision commit))
      (source (origin
                (method git-fetch)
                (uri (git-reference
                       (url "https://github.com/vstakhov/asignify.git")
                       (commit commit)))
                (file-name (git-file-name name version))
                (sha256
                 (base32
                  "1zl68qq6js6fdahxzyhvhrpyrwlv8c2zhdplycnfxyr1ckkhq8dw"))))
      (build-system gnu-build-system)
      (arguments
       `(#:configure-flags
         (list "--enable-openssl"
               (string-append "--with-openssl="
                              (assoc-ref %build-inputs "openssl")))))
      (native-inputs
       `(("autoconf" ,autoconf)
         ("automake" ,automake)
         ("libtool" ,libtool)))
      (inputs
       `(("openssl" ,openssl)))
      (home-page "https://github.com/vstakhov/asignify")
      (synopsis "Cryptographic authentication and encryption tool and library")
      (description "Asignify offers public cryptographic signatures and
encryption with a library or a command-line tool.  The tool is heavily inspired
by signify as used in OpenBSD.  The main goal of this project is to define a
high level API for signing files, validating signatures and encrypting using
public-key cryptography.  Asignify is designed to be portable and self-contained
with zero external dependencies.  Asignify can verify OpenBSD signatures, but it
cannot sign messages in OpenBSD format yet.")
      (license license:bsd-2))))

(define-public enchive
  (package
    (name "enchive")
    (version "3.5")
    (source (origin
                (method git-fetch)
                (uri (git-reference
                      (url "https://github.com/skeeto/enchive")
                      (commit version)))
                (sha256
                 (base32
                  "0fdrfc5l42lj2bvmv9dmkmhmm7qiszwk7cmdvnqad3fs7652g0qa"))
                (file-name (git-file-name name version))))
    (build-system gnu-build-system)
    (arguments
     '(#:tests? #f                      ; no check target         '
       #:make-flags (list "CC=gcc" "PREFIX=$(out)")
       #:phases (modify-phases %standard-phases
                  (delete 'configure)
                  (add-after 'install 'post-install
                    (lambda _
                      (let* ((out (assoc-ref %outputs "out"))
                             (lisp (string-append out "/share/emacs/site-lisp")))
                        (install-file "enchive-mode.el" lisp)
                        #t))))))
    (synopsis "Encrypted personal archives")
    (description
     "Enchive is a tool to encrypt files to yourself for long-term
archival.  It's a focused, simple alternative to more complex solutions such as
GnuPG or encrypted filesystems.  Enchive has no external dependencies and is
trivial to build for local use.  Portability is emphasized over performance.")
    (home-page "https://github.com/skeeto/enchive")
    (license license:unlicense)))

(define-public libsecp256k1
  (let ((commit "d644dda5c9dbdecee52d1aa259235510fdc2d4ee"))
    (package
      (name "libsecp256k1")
      (version (git-version "20191213" "1" commit))
      (source (origin
                (method git-fetch)
                (uri (git-reference
                      (url "https://github.com/bitcoin-core/secp256k1")
                      (commit commit)))
                (sha256
                 (base32
                  "0zmx32746khsm2cx0p3pdy3j2vkwmafvf7axiixijhgcg0xjv93i"))
                (file-name (git-file-name name version))))
      (build-system gnu-build-system)
      (native-inputs
       `(("autoconf" ,autoconf)
         ("automake" ,automake)
         ("libtool" ,libtool)))
      ;; WARNING: This package might need additional configure flags to run properly.
      ;; See https://git.archlinux.org/svntogit/community.git/tree/trunk/PKGBUILD?h=packages/libsecp256k1.
      (synopsis "C library for EC operations on curve secp256k1")
      (description
       "Optimized C library for EC operations on curve secp256k1.

This library is a work in progress and is being used to research best
practices.  Use at your own risk.

Features:

@itemize
@item secp256k1 ECDSA signing/verification and key generation.
@item Adding/multiplying private/public keys.
@item Serialization/parsing of private keys, public keys, signatures.
@item Constant time, constant memory access signing and pubkey generation.
@item Derandomized DSA (via RFC6979 or with a caller provided function.)
@item Very efficient implementation.
@end itemize\n")
      (home-page "https://github.com/bitcoin-core/secp256k1")
      (license license:unlicense))))

(define-public stoken
  (package
    (name "stoken")
    (version "0.92")
    (source (origin
              (method url-fetch)
              (uri (string-append "mirror://sourceforge/stoken/"
                                  "stoken-" version ".tar.gz"))
              (sha256
               (base32
                "0npgr6y85gzwksy8jkwa4yzvqwjprwnplx3yiw3ayk4f0ldlhaxa"))))
    (build-system gnu-build-system)
    (native-inputs
     `(("pkg-config" ,pkg-config)))
    (inputs
     `(("nettle" ,nettle)
       ("libxml2" ,libxml2)))
    (home-page "http://stoken.sf.net")
    (synopsis "Software Token for cryptographic authentication")
    (description
     "@code{stoken} is a token code generator compatible with RSA SecurID
128-bit (AES) tokens.  This package contains a standalone command-line program
that allows for importing token seeds, generating token codes, and various
utility/testing functions.")
    (license license:lgpl2.1+)))

(define-public hpenc
  (package
    (name "hpenc")
    (version "3.0")
    (source (origin
              (method git-fetch)
              (uri (git-reference
                     (url "https://github.com/vstakhov/hpenc")
                     (commit version)))
              (file-name (git-file-name name version))
              (sha256
               (base32
                "1fb5yi3d2k8kd4zm7liiqagpz610y168xrr1cvn7cbq314jm2my1"))))
    (build-system gnu-build-system)
    (arguments
     `(#:tests? #f ; No test suite
       #:make-flags
       (list (string-append "PREFIX=" (assoc-ref %outputs "out"))
             ;; Build the program and the docs.
             "SUBDIRS=src doc")
       #:phases
       (modify-phases %standard-phases
         (delete 'configure) ; No ./configure script
         (add-after 'unpack 'patch-path
           (lambda _
             (substitute* '("src/Makefile" "doc/Makefile")
               (("/usr/bin/install")
                "install"))))
         (add-before 'install 'make-output-directories
           (lambda* (#:key outputs #:allow-other-keys)
             (let* ((out (assoc-ref outputs "out"))
                    (bin (string-append out "/bin"))
                    (man1 (string-append out "/share/man/man1")))
               (mkdir-p bin)
               (mkdir-p man1)
               #t))))))
    (inputs
     `(("libsodium" ,libsodium)
       ("openssl" ,openssl)))
    (synopsis "High-performance command-line tool for stream encryption")
    (description "Hpenc is a command-line tool for performing authenticated
encryption (AES-GCM and ChaCha20-Poly1305) of streaming data.  It does not
perform an asymmetric key exchange, instead requiring the user to distribute
pre-shared keys out of band.  It is designed to handle large amounts of data
quickly by using all your CPU cores and hardware acceleration.")
    (home-page "https://github.com/vstakhov/hpenc")
    (license license:bsd-3)))

(define-public minisign
  (package
    (name "minisign")
    (version "0.8")
    (source
     (origin
       (method url-fetch)
       (uri
        (string-append "https://github.com/jedisct1/minisign/releases/download/"
                       version "/minisign-" version ".tar.gz"))
       (sha256
        (base32
         "10hhgwxf9rcdlr00shrkcyxndrc22dh5lj8k5z27xg3nc0jba3hk"))))
    (build-system cmake-build-system)
    (arguments
     ; No test suite
     `(#:tests? #f))
    (native-inputs
     `(("pkg-config" ,pkg-config)))
    (inputs
     `(("libsodium" ,libsodium)))
    (home-page "https://jedisct1.github.io/minisign")
    (synopsis "Tool to sign files and verify signatures")
    (description
     "Minisign is a dead simple tool to sign files and verify signatures.  It is
portable, lightweight, and uses the highly secure Ed25519 public-key signature
system.  Signature written by minisign can be verified using OpenBSD's
signify tool: public key files and signature files are compatible.  However,
minisign uses a slightly different format to store secret keys.  Minisign
signatures include trusted comments in addition to untrusted comments.
Trusted comments are signed, thus verified, before being displayed.")
    (license license:isc)))

(define-public libolm
  (package
    (name "libolm")
    (version "3.1.4")
    (source (origin
              (method git-fetch)
              (uri (git-reference
                    (url "https://git.matrix.org/git/olm")
                    (commit version)))
              (sha256
               (base32
                "06s7rw4a9vn35wzz7chxn54mp0sjgbpv2bzz9lq0g4hnzw33cjbi"))
              (file-name (git-file-name name version))))
    (arguments
     `(#:phases
       (modify-phases %standard-phases
         (replace 'check
           (lambda _
             (invoke "ctest" "build/tests"))))))
    (build-system cmake-build-system)
    (synopsis "Implementation of the olm and megolm cryptographic ratchets")
    (description "The libolm library implements the Double Ratchet
cryptographic ratchet.  It is written in C and C++11, and exposed as a C
API.")
    (home-page "https://matrix.org/docs/projects/other/olm/")
    (license license:asl2.0)))

(define-public hash-extender
  (let ((commit "cb8aaee49f93e9c0d2f03eb3cafb429c9eed723d")
        (revision "2"))
    (package
      (name "hash-extender")
      (version (git-version "0.0" revision commit))
      (source (origin
                (method git-fetch)
                (uri (git-reference
                      (url "https://github.com/iagox86/hash_extender")
                      (commit commit)))
                (sha256
                 (base32
                  "1fj118566hr1wv03az2w0iqknazsqqkak0mvlcvwpgr6midjqi9b"))
                (file-name (git-file-name name version))))
      (build-system gnu-build-system)
      (arguments
       `(#:phases
         (modify-phases %standard-phases
           (delete 'configure)
           (replace 'check
             (lambda _
               (invoke "./hash_extender_test")))
           (replace 'install
             (lambda* (#:key outputs #:allow-other-keys)
               (let* ((outdir (assoc-ref outputs "out"))
                      (bindir (string-append outdir "/bin"))
                      (docdir (string-append outdir
                                             "/share/doc/hash-extender-"
                                             ,version)))
                 (install-file "hash_extender" bindir)
                 (install-file "README.md" docdir)
                 #t))))))
      (inputs
       `(("openssl" ,openssl)))
      (synopsis "Tool for hash length extension attacks")
      (description "@command{hash_extender} is a utility for performing hash
length extension attacks supporting MD4, MD5, RIPEMD-160, SHA-0, SHA-1,
SHA-256, SHA-512, and WHIRLPOOL hashes.")
      (home-page "https://github.com/iagox86/hash_extender")
      (license license:bsd-3))))