tests/openpgp.scm

   1 ;;; GNU Guix --- Functional package management for GNU
   2 ;;; Copyright © 2020 Ludovic Courtès <ludo@gnu.org>
   3 ;;;
   4 ;;; This file is part of GNU Guix.
   5 ;;;
   6 ;;; GNU Guix is free software; you can redistribute it and/or modify it
   7 ;;; under the terms of the GNU General Public License as published by
   8 ;;; the Free Software Foundation; either version 3 of the License, or (at
   9 ;;; your option) any later version.
  10 ;;;
  11 ;;; GNU Guix is distributed in the hope that it will be useful, but
  12 ;;; WITHOUT ANY WARRANTY; without even the implied warranty of
  13 ;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 ;;; GNU General Public License for more details.
  15 ;;;
  16 ;;; You should have received a copy of the GNU General Public License
  17 ;;; along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.
  18
  19 (define-module (tests-openpgp)
  20   #:use-module (guix openpgp)
  21   #:use-module (gcrypt base16)
  22   #:use-module (gcrypt hash)
  23   #:use-module (gcrypt pk-crypto)
  24   #:use-module (ice-9 binary-ports)
  25   #:use-module (ice-9 match)
  26   #:use-module (rnrs bytevectors)
  27   #:use-module (srfi srfi-1)
  28   #:use-module (srfi srfi-11)
  29   #:use-module (srfi srfi-64)
  30   #:use-module (srfi srfi-71))
  31
  32 (define %radix-64-sample
  33   ;; Example of Radix-64 encoding from Section 6.6 of RFC4880.
  34   "\
  35 -----BEGIN PGP MESSAGE-----
  36 Version: OpenPrivacy 0.99
  37
  38 yDgBO22WxBHv7O8X7O/jygAEzol56iUKiXmV+XmpCtmpqQUKiQrFqclFqUDBovzS
  39 vBSFjNSiVHsuAA==
  40 =njUN
  41 -----END PGP MESSAGE-----\n")
  42
  43 (define %radix-64-sample/crc-mismatch
  44   ;; This time with a wrong CRC24 value.
  45   "\
  46 -----BEGIN PGP MESSAGE-----
  47
  48 yDgBO22WxBHv7O8X7O/jygAEzol56iUKiXmV+XmpCtmpqQUKiQrFqclFqUDBovzS
  49 vBSFjNSiVHsuAA==
  50 =AAAA
  51 -----END PGP MESSAGE-----\n")
  52
  53 (define %binary-sample
  54   ;; Same message as %radix-64-sample, decoded into bytevector.
  55   (base16-string->bytevector
  56   "c838013b6d96c411efecef17ecefe3ca0004ce8979ea250a897995f979a9\
  57 0ad9a9a9050a890ac5a9c945a940c1a2fcd2bc14858cd4a2547b2e00"))
  58
  59 (define %civodul-fingerprint
  60   "3CE4 6455 8A84 FDC6 9DB4  0CFB 090B 1199 3D9A EBB5")
  61
  62 (define %civodul-key-id #x090B11993D9AEBB5)       ;civodul.key
  63
  64 ;; Test keys.  They were generated in a container along these lines:
  65 ;;    guix environment -CP --ad-hoc gnupg pinentry
  66 ;; then, within the container:
  67 ;;    mkdir ~/.gnupg
  68 ;;    echo pinentry-program ~/.guix-profile/bin/pinentry-tty > ~/.gnupg/gpg-agent.conf
  69 ;;    gpg --quick-gen-key '<ludo+test-rsa@chbouib.org>' rsa
  70 ;; or similar.
  71 (define %rsa-key-id      #xAE25DA2A70DEED59)      ;rsa.key
  72 (define %dsa-key-id      #x587918047BE8BD2C)      ;dsa.key
  73 (define %ed25519-key-id  #x771F49CBFAAE072D)      ;ed25519.key
  74
  75 (define %rsa-key-fingerprint
  76   (base16-string->bytevector
  77    (string-downcase "385F86CFC86B665A5C165E6BAE25DA2A70DEED59")))
  78 (define %dsa-key-fingerprint
  79   (base16-string->bytevector
  80    (string-downcase "2884A980422330A4F33DD97F587918047BE8BD2C")))
  81 (define %ed25519-key-fingerprint
  82   (base16-string->bytevector
  83    (string-downcase "44D31E21AF7138F9B632280A771F49CBFAAE072D")))
  84
  85 \f
  86 ;;; The following are detached signatures created commands like:
  87 ;;;    echo 'Hello!' | gpg -sba --digest-algo sha512
  88 ;;; They are detached (no PACKET-ONE-PASS-SIGNATURE) and uncompressed.
  89
  90 (define %hello-signature/rsa
  91   ;; Signature of the ASCII string "Hello!\n".
  92   "\
  93 -----BEGIN PGP SIGNATURE-----
  94
  95 iQEzBAABCAAdFiEEOF+Gz8hrZlpcFl5rriXaKnDe7VkFAl4SRF0ACgkQriXaKnDe
  96 7VlIyQf/TU5rGUK42/C1ULoWvvm25Mjwh6xxoPPkuBxvos8bE6yKr/vJZePU3aSE
  97 mjbVFcO7DioxHMqLd49j803bUtdllJVU18ex9MkKbKjapkgEGkJsuTTzqyONprgk
  98 7xtZGBWuxkP1M6hJICJkA3Ys+sTdKalux/pzr5OWAe+gxytTF/vr/EyJzdmBxbJv
  99 /fhd1SeVIXSw4c5gf2Wcvcgfy4N5CiLaUb7j4646KBTvDvmUMcDZ+vmKqC/XdQeQ
 100 PrjArGKt40ErVd98fwvNHZnw7VQMx0A3nL3joL5g7/RckDOUb4mqKoqLsLd0wPHP
 101 y32DiDUY9s3sy5OMzX4Y49em8vxvlg==
 102 =ASEm
 103 -----END PGP SIGNATURE-----")
 104
 105
 106 (define %hello-signature/dsa
 107   "\
 108 -----BEGIN PGP SIGNATURE-----
 109
 110 iHUEABEIAB0WIQQohKmAQiMwpPM92X9YeRgEe+i9LAUCXhJFpQAKCRBYeRgEe+i9
 111 LDAaAQC0lXPQepvZBANAUtRLMZuOwL9NQPkfhIwUXtLEBBzyFQD/So8DcybXpRBi
 112 JKOiyAQQjMs/GJ6qMEQpRAhyyJRAock=
 113 =iAEc
 114 -----END PGP SIGNATURE-----")
 115
 116
 117 (define %hello-signature/ed25519/sha256           ;digest-algo: sha256
 118   "\
 119 -----BEGIN PGP SIGNATURE-----
 120
 121 iHUEABYIAB0WIQRE0x4hr3E4+bYyKAp3H0nL+q4HLQUCXqRADAAKCRB3H0nL+q4H
 122 LUImAP9/foaSjPFC/MSr52LNV5ROSL9haea4jPpUP+N6ViFGowEA+AE/xpXPIqsz
 123 R6CdxMevURuqUpqQ7rHeiMmdUepeewU=
 124 =tLXy
 125 -----END PGP SIGNATURE-----")
 126
 127 (define %hello-signature/ed25519/sha512           ;digest-algo: sha512
 128   "\
 129 -----BEGIN PGP SIGNATURE-----
 130
 131 iHUEABYKAB0WIQRE0x4hr3E4+bYyKAp3H0nL+q4HLQUCXqRAGgAKCRB3H0nL+q4H
 132 LTeKAP0S8LiiosJXOARlYNdhfGw9j26lHrbwJh5CORGlaqqIJAEAoMYcmtNa2b6O
 133 inlEwB/KQM88O9RwA8xH7X5a0rodOw4=
 134 =68r/
 135 -----END PGP SIGNATURE-----")
 136
 137 (define %hello-signature/ed25519/sha1             ;digest-algo: sha1
 138   "\
 139 -----BEGIN PGP SIGNATURE-----
 140
 141 iHUEABYCAB0WIQRE0x4hr3E4+bYyKAp3H0nL+q4HLQUCXqRALQAKCRB3H0nL+q4H
 142 LdhEAQCfkdYhIVRa43oTNw9EL/TDFGQjXSHNRFVU0ktjkWbkQwEAjIXhvj2sqy79
 143 Pz7oopeN72xgggYUNT37ezqN3MeCqw0=
 144 =AE4G
 145 -----END PGP SIGNATURE-----")
 146
 147 \f
 148 (test-begin "openpgp")
 149
 150 (test-equal "read-radix-64"
 151   '(#t "PGP MESSAGE")
 152   (let-values (((data type)
 153                 (call-with-input-string %radix-64-sample read-radix-64)))
 154     (list (bytevector? data) type)))
 155
 156 (test-equal "read-radix-64, CRC mismatch"
 157   '(#f "PGP MESSAGE")
 158   (call-with-values
 159       (lambda ()
 160         (call-with-input-string %radix-64-sample/crc-mismatch
 161           read-radix-64))
 162     list))
 163
 164 (test-assert "port-ascii-armored?, #t"
 165   (call-with-input-string %radix-64-sample port-ascii-armored?))
 166
 167 (test-assert "port-ascii-armored?, #f"
 168   (not (port-ascii-armored? (open-bytevector-input-port %binary-sample))))
 169
 170 (test-assert "get-openpgp-keyring"
 171   (let* ((key (search-path %load-path "tests/civodul.key"))
 172          (keyring (get-openpgp-keyring
 173                    (open-bytevector-input-port
 174                     (call-with-input-file key read-radix-64)))))
 175     (let-values (((primary packets)
 176                   (lookup-key-by-id keyring %civodul-key-id)))
 177       (let ((fingerprint (openpgp-public-key-fingerprint primary)))
 178         (and (= (openpgp-public-key-id primary) %civodul-key-id)
 179              (not (openpgp-public-key-subkey? primary))
 180              (string=? (openpgp-format-fingerprint fingerprint)
 181                        %civodul-fingerprint)
 182              (string=? (openpgp-user-id-value (find openpgp-user-id? packets))
 183                        "Ludovic Courtès <ludo@gnu.org>")
 184              (eq? (lookup-key-by-fingerprint keyring fingerprint)
 185                   primary))))))
 186
 187 (test-equal "get-openpgp-detached-signature/ascii"
 188   (list `(,%dsa-key-id ,%dsa-key-fingerprint dsa sha256)
 189         `(,%rsa-key-id ,%rsa-key-fingerprint rsa sha256)
 190         `(,%ed25519-key-id ,%ed25519-key-fingerprint eddsa sha256)
 191         `(,%ed25519-key-id ,%ed25519-key-fingerprint eddsa sha512)
 192         `(,%ed25519-key-id ,%ed25519-key-fingerprint eddsa sha1))
 193   (map (lambda (str)
 194          (let ((signature (get-openpgp-detached-signature/ascii
 195                            (open-input-string str))))
 196            (list (openpgp-signature-issuer-key-id signature)
 197                  (openpgp-signature-issuer-fingerprint signature)
 198                  (openpgp-signature-public-key-algorithm signature)
 199                  (openpgp-signature-hash-algorithm signature))))
 200        (list %hello-signature/dsa
 201              %hello-signature/rsa
 202              %hello-signature/ed25519/sha256
 203              %hello-signature/ed25519/sha512
 204              %hello-signature/ed25519/sha1)))
 205
 206 (test-equal "verify-openpgp-signature, missing key"
 207   `(missing-key ,%rsa-key-fingerprint)
 208   (let* ((keyring   (get-openpgp-keyring (%make-void-port "r")))
 209          (signature (string->openpgp-packet %hello-signature/rsa)))
 210     (let-values (((status key)
 211                   (verify-openpgp-signature signature keyring
 212                                             (open-input-string "Hello!\n"))))
 213       (list status key))))
 214
 215 (test-equal "verify-openpgp-signature, good signatures"
 216   `((good-signature ,%rsa-key-id)
 217     (good-signature ,%dsa-key-id)
 218     (good-signature ,%ed25519-key-id)
 219     (good-signature ,%ed25519-key-id)
 220     (good-signature ,%ed25519-key-id))
 221   (map (lambda (key signature)
 222          (let* ((key       (search-path %load-path key))
 223                 (keyring   (get-openpgp-keyring
 224                             (open-bytevector-input-port
 225                              (call-with-input-file key read-radix-64))))
 226                 (signature (string->openpgp-packet signature)))
 227            (let-values (((status key)
 228                          (verify-openpgp-signature signature keyring
 229                                                    (open-input-string "Hello!\n"))))
 230              (list status (openpgp-public-key-id key)))))
 231        (list "tests/rsa.key" "tests/dsa.key"
 232              "tests/ed25519.key" "tests/ed25519.key" "tests/ed25519.key")
 233        (list %hello-signature/rsa %hello-signature/dsa
 234              %hello-signature/ed25519/sha256
 235              %hello-signature/ed25519/sha512
 236              %hello-signature/ed25519/sha1)))
 237
 238 (test-equal "verify-openpgp-signature, bad signature"
 239   `((bad-signature ,%rsa-key-id)
 240     (bad-signature ,%dsa-key-id)
 241     (bad-signature ,%ed25519-key-id)
 242     (bad-signature ,%ed25519-key-id)
 243     (bad-signature ,%ed25519-key-id))
 244   (let ((keyring (fold (lambda (key keyring)
 245                          (let ((key (search-path %load-path key)))
 246                            (get-openpgp-keyring
 247                             (open-bytevector-input-port
 248                              (call-with-input-file key read-radix-64))
 249                             keyring)))
 250                        %empty-keyring
 251                        '("tests/rsa.key" "tests/dsa.key"
 252                          "tests/ed25519.key" "tests/ed25519.key"
 253                          "tests/ed25519.key"))))
 254     (map (lambda (signature)
 255            (let ((signature (string->openpgp-packet signature)))
 256              (let-values (((status key)
 257                            (verify-openpgp-signature signature keyring
 258                                                      (open-input-string "What?!"))))
 259                (list status (openpgp-public-key-id key)))))
 260          (list %hello-signature/rsa %hello-signature/dsa
 261                %hello-signature/ed25519/sha256
 262                %hello-signature/ed25519/sha512
 263                %hello-signature/ed25519/sha1))))
 264
 265 (test-end "openpgp")