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 %civodul-fingerprint
  54   "3CE4 6455 8A84 FDC6 9DB4  0CFB 090B 1199 3D9A EBB5")
  55
  56 (define %civodul-key-id #x090B11993D9AEBB5)       ;civodul.key
  57
  58 ;; Test keys.  They were generated in a container along these lines:
  59 ;;    guix environment -CP --ad-hoc gnupg pinentry
  60 ;; then, within the container:
  61 ;;    mkdir ~/.gnupg
  62 ;;    echo pinentry-program ~/.guix-profile/bin/pinentry-tty > ~/.gnupg/gpg-agent.conf
  63 ;;    gpg --quick-gen-key '<ludo+test-rsa@chbouib.org>' rsa
  64 ;; or similar.
  65 (define %rsa-key-id      #xAE25DA2A70DEED59)      ;rsa.key
  66 (define %dsa-key-id      #x587918047BE8BD2C)      ;dsa.key
  67 (define %ed25519-key-id  #x771F49CBFAAE072D)      ;ed25519.key
  68
  69 (define %rsa-key-fingerprint
  70   (base16-string->bytevector
  71    (string-downcase "385F86CFC86B665A5C165E6BAE25DA2A70DEED59")))
  72 (define %dsa-key-fingerprint
  73   (base16-string->bytevector
  74    (string-downcase "2884A980422330A4F33DD97F587918047BE8BD2C")))
  75 (define %ed25519-key-fingerprint
  76   (base16-string->bytevector
  77    (string-downcase "44D31E21AF7138F9B632280A771F49CBFAAE072D")))
  78
  79 \f
  80 ;;; The following are detached signatures created commands like:
  81 ;;;    echo 'Hello!' | gpg -sba --digest-algo sha512
  82 ;;; They are detached (no PACKET-ONE-PASS-SIGNATURE) and uncompressed.
  83
  84 (define %hello-signature/rsa
  85   ;; Signature of the ASCII string "Hello!\n".
  86   "\
  87 -----BEGIN PGP SIGNATURE-----
  88
  89 iQEzBAABCAAdFiEEOF+Gz8hrZlpcFl5rriXaKnDe7VkFAl4SRF0ACgkQriXaKnDe
  90 7VlIyQf/TU5rGUK42/C1ULoWvvm25Mjwh6xxoPPkuBxvos8bE6yKr/vJZePU3aSE
  91 mjbVFcO7DioxHMqLd49j803bUtdllJVU18ex9MkKbKjapkgEGkJsuTTzqyONprgk
  92 7xtZGBWuxkP1M6hJICJkA3Ys+sTdKalux/pzr5OWAe+gxytTF/vr/EyJzdmBxbJv
  93 /fhd1SeVIXSw4c5gf2Wcvcgfy4N5CiLaUb7j4646KBTvDvmUMcDZ+vmKqC/XdQeQ
  94 PrjArGKt40ErVd98fwvNHZnw7VQMx0A3nL3joL5g7/RckDOUb4mqKoqLsLd0wPHP
  95 y32DiDUY9s3sy5OMzX4Y49em8vxvlg==
  96 =ASEm
  97 -----END PGP SIGNATURE-----")
  98
  99
 100 (define %hello-signature/dsa
 101   "\
 102 -----BEGIN PGP SIGNATURE-----
 103
 104 iHUEABEIAB0WIQQohKmAQiMwpPM92X9YeRgEe+i9LAUCXhJFpQAKCRBYeRgEe+i9
 105 LDAaAQC0lXPQepvZBANAUtRLMZuOwL9NQPkfhIwUXtLEBBzyFQD/So8DcybXpRBi
 106 JKOiyAQQjMs/GJ6qMEQpRAhyyJRAock=
 107 =iAEc
 108 -----END PGP SIGNATURE-----")
 109
 110
 111 (define %hello-signature/ed25519/sha256           ;digest-algo: sha256
 112   "\
 113 -----BEGIN PGP SIGNATURE-----
 114
 115 iHUEABYIAB0WIQRE0x4hr3E4+bYyKAp3H0nL+q4HLQUCXqRADAAKCRB3H0nL+q4H
 116 LUImAP9/foaSjPFC/MSr52LNV5ROSL9haea4jPpUP+N6ViFGowEA+AE/xpXPIqsz
 117 R6CdxMevURuqUpqQ7rHeiMmdUepeewU=
 118 =tLXy
 119 -----END PGP SIGNATURE-----")
 120
 121 (define %hello-signature/ed25519/sha512           ;digest-algo: sha512
 122   "\
 123 -----BEGIN PGP SIGNATURE-----
 124
 125 iHUEABYKAB0WIQRE0x4hr3E4+bYyKAp3H0nL+q4HLQUCXqRAGgAKCRB3H0nL+q4H
 126 LTeKAP0S8LiiosJXOARlYNdhfGw9j26lHrbwJh5CORGlaqqIJAEAoMYcmtNa2b6O
 127 inlEwB/KQM88O9RwA8xH7X5a0rodOw4=
 128 =68r/
 129 -----END PGP SIGNATURE-----")
 130
 131 (define %hello-signature/ed25519/sha1             ;digest-algo: sha1
 132   "\
 133 -----BEGIN PGP SIGNATURE-----
 134
 135 iHUEABYCAB0WIQRE0x4hr3E4+bYyKAp3H0nL+q4HLQUCXqRALQAKCRB3H0nL+q4H
 136 LdhEAQCfkdYhIVRa43oTNw9EL/TDFGQjXSHNRFVU0ktjkWbkQwEAjIXhvj2sqy79
 137 Pz7oopeN72xgggYUNT37ezqN3MeCqw0=
 138 =AE4G
 139 -----END PGP SIGNATURE-----")
 140
 141 \f
 142 (test-begin "openpgp")
 143
 144 (test-equal "read-radix-64"
 145   '(#t "PGP MESSAGE")
 146   (let-values (((data type)
 147                 (call-with-input-string %radix-64-sample read-radix-64)))
 148     (list (bytevector? data) type)))
 149
 150 (test-equal "read-radix-64, CRC mismatch"
 151   '(#f "PGP MESSAGE")
 152   (call-with-values
 153       (lambda ()
 154         (call-with-input-string %radix-64-sample/crc-mismatch
 155           read-radix-64))
 156     list))
 157
 158 (test-assert "get-openpgp-keyring"
 159   (let* ((key (search-path %load-path "tests/civodul.key"))
 160          (keyring (get-openpgp-keyring
 161                    (open-bytevector-input-port
 162                     (call-with-input-file key read-radix-64)))))
 163     (let-values (((primary packets)
 164                   (lookup-key-by-id keyring %civodul-key-id)))
 165       (let ((fingerprint (openpgp-public-key-fingerprint primary)))
 166         (and (= (openpgp-public-key-id primary) %civodul-key-id)
 167              (not (openpgp-public-key-subkey? primary))
 168              (string=? (openpgp-format-fingerprint fingerprint)
 169                        %civodul-fingerprint)
 170              (string=? (openpgp-user-id-value (find openpgp-user-id? packets))
 171                        "Ludovic Courtès <ludo@gnu.org>")
 172              (eq? (lookup-key-by-fingerprint keyring fingerprint)
 173                   primary))))))
 174
 175 (test-equal "get-openpgp-detached-signature/ascii"
 176   (list `(,%dsa-key-id ,%dsa-key-fingerprint dsa sha256)
 177         `(,%rsa-key-id ,%rsa-key-fingerprint rsa sha256)
 178         `(,%ed25519-key-id ,%ed25519-key-fingerprint eddsa sha256)
 179         `(,%ed25519-key-id ,%ed25519-key-fingerprint eddsa sha512)
 180         `(,%ed25519-key-id ,%ed25519-key-fingerprint eddsa sha1))
 181   (map (lambda (str)
 182          (let ((signature (get-openpgp-detached-signature/ascii
 183                            (open-input-string str))))
 184            (list (openpgp-signature-issuer-key-id signature)
 185                  (openpgp-signature-issuer-fingerprint signature)
 186                  (openpgp-signature-public-key-algorithm signature)
 187                  (openpgp-signature-hash-algorithm signature))))
 188        (list %hello-signature/dsa
 189              %hello-signature/rsa
 190              %hello-signature/ed25519/sha256
 191              %hello-signature/ed25519/sha512
 192              %hello-signature/ed25519/sha1)))
 193
 194 (test-equal "verify-openpgp-signature, missing key"
 195   `(missing-key ,%rsa-key-fingerprint)
 196   (let* ((keyring   (get-openpgp-keyring (%make-void-port "r")))
 197          (signature (string->openpgp-packet %hello-signature/rsa)))
 198     (let-values (((status key)
 199                   (verify-openpgp-signature signature keyring
 200                                             (open-input-string "Hello!\n"))))
 201       (list status key))))
 202
 203 (test-equal "verify-openpgp-signature, good signatures"
 204   `((good-signature ,%rsa-key-id)
 205     (good-signature ,%dsa-key-id)
 206     (good-signature ,%ed25519-key-id)
 207     (good-signature ,%ed25519-key-id)
 208     (good-signature ,%ed25519-key-id))
 209   (map (lambda (key signature)
 210          (let* ((key       (search-path %load-path key))
 211                 (keyring   (get-openpgp-keyring
 212                             (open-bytevector-input-port
 213                              (call-with-input-file key read-radix-64))))
 214                 (signature (string->openpgp-packet signature)))
 215            (let-values (((status key)
 216                          (verify-openpgp-signature signature keyring
 217                                                    (open-input-string "Hello!\n"))))
 218              (list status (openpgp-public-key-id key)))))
 219        (list "tests/rsa.key" "tests/dsa.key"
 220              "tests/ed25519.key" "tests/ed25519.key" "tests/ed25519.key")
 221        (list %hello-signature/rsa %hello-signature/dsa
 222              %hello-signature/ed25519/sha256
 223              %hello-signature/ed25519/sha512
 224              %hello-signature/ed25519/sha1)))
 225
 226 (test-equal "verify-openpgp-signature, bad signature"
 227   `((bad-signature ,%rsa-key-id)
 228     (bad-signature ,%dsa-key-id)
 229     (bad-signature ,%ed25519-key-id)
 230     (bad-signature ,%ed25519-key-id)
 231     (bad-signature ,%ed25519-key-id))
 232   (let ((keyring (fold (lambda (key keyring)
 233                          (let ((key (search-path %load-path key)))
 234                            (get-openpgp-keyring
 235                             (open-bytevector-input-port
 236                              (call-with-input-file key read-radix-64))
 237                             keyring)))
 238                        %empty-keyring
 239                        '("tests/rsa.key" "tests/dsa.key"
 240                          "tests/ed25519.key" "tests/ed25519.key"
 241                          "tests/ed25519.key"))))
 242     (map (lambda (signature)
 243            (let ((signature (string->openpgp-packet signature)))
 244              (let-values (((status key)
 245                            (verify-openpgp-signature signature keyring
 246                                                      (open-input-string "What?!"))))
 247                (list status (openpgp-public-key-id key)))))
 248          (list %hello-signature/rsa %hello-signature/dsa
 249                %hello-signature/ed25519/sha256
 250                %hello-signature/ed25519/sha512
 251                %hello-signature/ed25519/sha1))))
 252
 253 (test-end "openpgp")