pygost/test_cms.py

   1 # coding: utf-8
   2 # PyGOST -- Pure Python GOST cryptographic functions library
   3 # Copyright (C) 2015-2020 Sergey Matveev <stargrave@stargrave.org>
   4 #
   5 # This program is free software: you can redistribute it and/or modify
   6 # it under the terms of the GNU General Public License as published by
   7 # the Free Software Foundation, version 3 of the License.
   8 #
   9 # This program is distributed in the hope that it will be useful,
  10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 # GNU General Public License for more details.
  13 #
  14 # You should have received a copy of the GNU General Public License
  15 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16
  17 from base64 import b64decode
  18 from unittest import skipIf
  19 from unittest import TestCase
  20
  21 from six import text_type
  22
  23 from pygost.gost28147 import cfb_decrypt
  24 from pygost.gost3410 import CURVES
  25 from pygost.gost3410 import prv_unmarshal
  26 from pygost.gost3410 import pub_marshal
  27 from pygost.gost3410 import pub_unmarshal
  28 from pygost.gost3410 import public_key
  29 from pygost.gost3410 import verify
  30 from pygost.gost3410_vko import kek_34102012256
  31 from pygost.gost3410_vko import ukm_unmarshal
  32 from pygost.gost34112012256 import GOST34112012256
  33 from pygost.gost34112012512 import GOST34112012512
  34 from pygost.gost3412 import GOST3412Kuznechik
  35 from pygost.gost3412 import GOST3412Magma
  36 from pygost.gost3413 import ctr_acpkm
  37 from pygost.gost3413 import KEYSIZE
  38 from pygost.gost3413 import mac as omac
  39 from pygost.kdf import kdf_tree_gostr3411_2012_256
  40 from pygost.kdf import keg
  41 from pygost.utils import hexdec
  42 from pygost.wrap import kimp15
  43 from pygost.wrap import unwrap_cryptopro
  44 from pygost.wrap import unwrap_gost
  45
  46 try:
  47     from pyderasn import DecodePathDefBy
  48     from pyderasn import OctetString
  49
  50     from pygost.asn1schemas.cms import ContentInfo
  51     from pygost.asn1schemas.cms import SignedAttributes
  52     from pygost.asn1schemas.oids import id_cms_mac_attr
  53     from pygost.asn1schemas.oids import id_envelopedData
  54     from pygost.asn1schemas.oids import id_gostr3412_2015_kuznyechik_ctracpkm
  55     from pygost.asn1schemas.oids import id_gostr3412_2015_kuznyechik_ctracpkm_omac
  56     from pygost.asn1schemas.oids import id_gostr3412_2015_kuznyechik_wrap_kexp15
  57     from pygost.asn1schemas.oids import id_gostr3412_2015_magma_ctracpkm
  58     from pygost.asn1schemas.oids import id_gostr3412_2015_magma_ctracpkm_omac
  59     from pygost.asn1schemas.oids import id_gostr3412_2015_magma_wrap_kexp15
  60     from pygost.asn1schemas.oids import id_messageDigest
  61     from pygost.asn1schemas.oids import id_tc26_agreement_gost3410_2012_256
  62     from pygost.asn1schemas.oids import id_tc26_agreement_gost3410_2012_512
  63     from pygost.asn1schemas.oids import id_tc26_gost3410_2012_256
  64     from pygost.asn1schemas.oids import id_tc26_gost3410_2012_512
  65     from pygost.asn1schemas.oids import id_tc26_gost3410_2012_512_paramSetA
  66     from pygost.asn1schemas.oids import id_tc26_gost3411_2012_256
  67     from pygost.asn1schemas.oids import id_tc26_gost3411_2012_512
  68     from pygost.asn1schemas.x509 import Certificate
  69     from pygost.asn1schemas.x509 import GostR34102012PublicKeyParameters
  70 except ImportError:
  71     pyderasn_exists = False
  72 else:
  73     pyderasn_exists = True
  74
  75
  76 @skipIf(not pyderasn_exists, "PyDERASN dependency is required")
  77 class TestSigned(TestCase):
  78     """SignedData test vectors from "Использование
  79     алгоритмов ГОСТ 28147-89, ГОСТ Р 34.11 и ГОСТ Р 34.10 в
  80     криптографических сообщениях формата CMS" (TK26CMS.pdf)
  81     """
  82
  83     def process_cms(
  84             self,
  85             content_info_raw,
  86             prv_key_raw,
  87             curve_name,
  88             hasher,
  89     ):
  90         content_info, tail = ContentInfo().decode(content_info_raw)
  91         self.assertSequenceEqual(tail, b"")
  92         self.assertIsNotNone(content_info["content"].defined)
  93         _, signed_data = content_info["content"].defined
  94         self.assertEqual(len(signed_data["signerInfos"]), 1)
  95         curve = CURVES[curve_name]
  96         self.assertTrue(verify(
  97             curve,
  98             public_key(curve, prv_unmarshal(prv_key_raw)),
  99             hasher(bytes(signed_data["encapContentInfo"]["eContent"])).digest()[::-1],
 100             bytes(signed_data["signerInfos"][0]["signature"]),
 101         ))
 102
 103     def test_256(self):
 104         content_info_raw = b64decode("""
 105 MIIBBQYJKoZIhvcNAQcCoIH3MIH0AgEBMQ4wDAYIKoUDBwEBAgIFADAbBgkqhkiG
 106 9w0BBwGgDgQMVGVzdCBtZXNzYWdlMYHBMIG+AgEBMFswVjEpMCcGCSqGSIb3DQEJ
 107 ARYaR29zdFIzNDEwLTIwMTJAZXhhbXBsZS5jb20xKTAnBgNVBAMTIEdvc3RSMzQx
 108 MC0yMDEyICgyNTYgYml0KSBleGFtcGxlAgEBMAwGCCqFAwcBAQICBQAwDAYIKoUD
 109 BwEBAQEFAARAkptb2ekZbC94FaGDQeP70ExvTkXtOY9zgz3cCco/hxPhXUVo3eCx
 110 VNwDQ8enFItJZ8DEX4blZ8QtziNCMl5HbA==
 111         """)
 112         prv_key_raw = hexdec("BFCF1D623E5CDD3032A7C6EABB4A923C46E43D640FFEAAF2C3ED39A8FA399924")[::-1]
 113         self.process_cms(
 114             content_info_raw,
 115             prv_key_raw,
 116             "id-GostR3410-2001-CryptoPro-XchA-ParamSet",
 117             GOST34112012256,
 118         )
 119
 120     def test_512(self):
 121         content_info_raw = b64decode("""
 122 MIIBSQYJKoZIhvcNAQcCoIIBOjCCATYCAQExDjAMBggqhQMHAQECAwUAMBsGCSqG
 123 SIb3DQEHAaAOBAxUZXN0IG1lc3NhZ2UxggECMIH/AgEBMFswVjEpMCcGCSqGSIb3
 124 DQEJARYaR29zdFIzNDEwLTIwMTJAZXhhbXBsZS5jb20xKTAnBgNVBAMTIEdvc3RS
 125 MzQxMC0yMDEyICg1MTIgYml0KSBleGFtcGxlAgEBMAwGCCqFAwcBAQIDBQAwDAYI
 126 KoUDBwEBAQIFAASBgFyVohNhMHUi/+RAF3Gh/cC7why6v+4jPWVlx1TYlXtV8Hje
 127 hI2Y+rP52/LO6EUHG/XcwCBbUxmRWsbUSRRBAexmaafkSdvv2FFwC8kHOcti+UPX
 128 PS+KRYxT8vhcsBLWWxDkc1McI7aF09hqtED36mQOfACzeJjEoUjALpmJob1V
 129         """)
 130         prv_key_raw = hexdec("3FC01CDCD4EC5F972EB482774C41E66DB7F380528DFE9E67992BA05AEE462435757530E641077CE587B976C8EEB48C48FD33FD175F0C7DE6A44E014E6BCB074B")[::-1]
 131         self.process_cms(
 132             content_info_raw,
 133             prv_key_raw,
 134             "id-tc26-gost-3410-12-512-paramSetB",
 135             GOST34112012512,
 136         )
 137
 138
 139 @skipIf(not pyderasn_exists, "PyDERASN dependency is required")
 140 class TestDigested(TestCase):
 141     """DigestedData test vectors from "Использование
 142     алгоритмов ГОСТ 28147-89, ГОСТ Р 34.11 и ГОСТ Р 34.10 в
 143     криптографических сообщениях формата CMS" (TK26CMS.pdf)
 144     """
 145
 146     def process_cms(self, content_info_raw, hasher):
 147         content_info, tail = ContentInfo().decode(content_info_raw)
 148         self.assertSequenceEqual(tail, b"")
 149         self.assertIsNotNone(content_info["content"].defined)
 150         _, digested_data = content_info["content"].defined
 151         self.assertSequenceEqual(
 152             hasher(bytes(digested_data["encapContentInfo"]["eContent"])).digest(),
 153             bytes(digested_data["digest"]),
 154         )
 155
 156     def test_256(self):
 157         content_info_raw = b64decode("""
 158 MIGdBgkqhkiG9w0BBwWggY8wgYwCAQAwDAYIKoUDBwEBAgIFADBXBgkqhkiG9w0B
 159 BwGgSgRI0eUg4uXy8OgsINHy8Ojh7uboIOLt8/boLCDi5f7y+iDxIOzu8P8g8fLw
 160 5evg7Ogg7eAg9fDg4fD7/yDv6/rq+yDI4+7w5eL7BCCd0v5OkECeXah/U5dtdAWw
 161 wMrGKPxmmnQdUAY8VX6PUA==
 162         """)
 163         self.process_cms(content_info_raw, GOST34112012256)
 164
 165     def test_512(self):
 166         content_info_raw = b64decode("""
 167 MIG0BgkqhkiG9w0BBwWggaYwgaMCAQAwDAYIKoUDBwEBAgMFADBOBgkqhkiG9w0B
 168 BwGgQQQ/MDEyMzQ1Njc4OTAxMjM0NTY3ODkwMTIzNDU2Nzg5MDEyMzQ1Njc4OTAx
 169 MjM0NTY3ODkwMTIzNDU2Nzg5MDEyBEAbVNAaSvW51cw9htaNKFRisZq8JHUiLzXA
 170 hRIr5Lof+gCtMPh2ezqCOExldPAkwxHipIEzKwjvf0F5eJHBZG9I
 171         """)
 172         self.process_cms(content_info_raw, GOST34112012512)
 173
 174
 175 @skipIf(not pyderasn_exists, "PyDERASN dependency is required")
 176 class TestEnvelopedKTRI(TestCase):
 177     """EnvelopedData KeyTransRecipientInfo-based test vectors from
 178     "Использование алгоритмов ГОСТ 28147-89, ГОСТ Р 34.11 и ГОСТ Р 34.10
 179     в криптографических сообщениях формата CMS" (TK26CMS.pdf)
 180     """
 181
 182     def process_cms(
 183             self,
 184             content_info_raw,
 185             prv_key_our,
 186             curve_name,
 187             keker,
 188             plaintext_expected,
 189     ):
 190         sbox = "id-tc26-gost-28147-param-Z"
 191         content_info, tail = ContentInfo().decode(content_info_raw, ctx={
 192             "defines_by_path": [
 193                 (
 194                     (
 195                         "content",
 196                         DecodePathDefBy(id_envelopedData),
 197                         "recipientInfos",
 198                         any,
 199                         "ktri",
 200                         "encryptedKey",
 201                         DecodePathDefBy(spki_algorithm),
 202                         "transportParameters",
 203                         "ephemeralPublicKey",
 204                         "algorithm",
 205                         "algorithm",
 206                     ),
 207                     (
 208                         (
 209                             ("..", "subjectPublicKey"),
 210                             {
 211                                 id_tc26_gost3410_2012_256: OctetString(),
 212                                 id_tc26_gost3410_2012_512: OctetString(),
 213                             },
 214                         ),
 215                     ),
 216                 ) for spki_algorithm in (
 217                     id_tc26_gost3410_2012_256,
 218                     id_tc26_gost3410_2012_512,
 219                 )
 220             ],
 221         })
 222         self.assertSequenceEqual(tail, b"")
 223         self.assertIsNotNone(content_info["content"].defined)
 224         _, enveloped_data = content_info["content"].defined
 225         eci = enveloped_data["encryptedContentInfo"]
 226         ri = enveloped_data["recipientInfos"][0]
 227         self.assertIsNotNone(ri["ktri"]["encryptedKey"].defined)
 228         _, encrypted_key = ri["ktri"]["encryptedKey"].defined
 229         ukm = bytes(encrypted_key["transportParameters"]["ukm"])
 230         spk = encrypted_key["transportParameters"]["ephemeralPublicKey"]["subjectPublicKey"]
 231         self.assertIsNotNone(spk.defined)
 232         _, pub_key_their = spk.defined
 233         curve = CURVES[curve_name]
 234         kek = keker(curve, prv_key_our, bytes(pub_key_their), ukm)
 235         key_wrapped = bytes(encrypted_key["sessionEncryptedKey"]["encryptedKey"])
 236         mac = bytes(encrypted_key["sessionEncryptedKey"]["macKey"])
 237         cek = unwrap_cryptopro(kek, ukm + key_wrapped + mac, sbox=sbox)
 238         ciphertext = bytes(eci["encryptedContent"])
 239         self.assertIsNotNone(eci["contentEncryptionAlgorithm"]["parameters"].defined)
 240         _, encryption_params = eci["contentEncryptionAlgorithm"]["parameters"].defined
 241         iv = bytes(encryption_params["iv"])
 242         self.assertSequenceEqual(
 243             cfb_decrypt(cek, ciphertext, iv, sbox=sbox, mesh=True),
 244             plaintext_expected,
 245         )
 246
 247     def test_256(self):
 248         content_info_raw = b64decode("""
 249 MIIKGgYJKoZIhvcNAQcDoIIKCzCCCgcCAQAxggE0MIIBMAIBADBbMFYxKTAnBgkq
 250 hkiG9w0BCQEWGkdvc3RSMzQxMC0yMDEyQGV4YW1wbGUuY29tMSkwJwYDVQQDEyBH
 251 b3N0UjM0MTAtMjAxMiAyNTYgYml0cyBleGNoYW5nZQIBATAfBggqhQMHAQEBATAT
 252 BgcqhQMCAiQABggqhQMHAQECAgSBrDCBqTAoBCCVJxUMdbKRzCJ5K1NWJIXnN7Ul
 253 zaceeFlblA2qH4wZrgQEsHnIG6B9BgkqhQMHAQIFAQGgZjAfBggqhQMHAQEBATAT
 254 BgcqhQMCAiQABggqhQMHAQECAgNDAARAFoqoLg1lV780co6GdwtjLtS4KCXv9VGR
 255 sd7PTPHCT/5iGbvOlKNW2I8UhayJ0dv7RV7Nb1lDIxPxf4Mbp2CikgQI1b4+WpGE
 256 sfQwggjIBgkqhkiG9w0BBwEwHwYGKoUDAgIVMBUECHYNkdvFoYdyBgkqhQMHAQIF
 257 AQGAggiYvFFpJKILAFdXjcdLLYv4eruXzL/wOXL8y9HHIDMbSzV1GM033J5Yt/p4
 258 H6JYe1L1hjAfE/BAAYBndof2sSUxC3/I7xj+b7M8BZ3GYPqATPtR4aCQDK6z91lx
 259 nDBAWx0HdsStT5TOj/plMs4zJDadvIJLfjmGkt0Np8FSnSdDPOcJAO/jcwiOPopg
 260 +Z8eIuZNmY4seegTLue+7DGqvqi1GdZdMnvXBFIKc9m5DUsC7LdyboqKImh6giZE
 261 YZnxb8a2naersPylhrf+zp4Piwwv808yOrD6LliXUiH0RojlmuaQP4wBkb7m073h
 262 MeAWEWSvyXzOvOOuFST/hxPEupiTRoHPUdfboJT3tNpizUhE384SrvXHpwpgivQ4
 263 J0zF2/uzTBEupXR6dFC9rTHAK3X79SltqBNnHyIXBwe+BMqTmKTfnlPVHBUfTXZg
 264 oakDItwKwa1MBOZeciwtUFza+7o9FZhKIandb848chGdgd5O9ksaXvPJDIPxQjZd
 265 EBVhnXLlje4TScImwTdvYB8GsI8ljKb2bL3FjwQWGbPaOjXc2D9w+Ore8bk1E4TA
 266 ayhypU7MH3Mq1EBZ4j0iROEFBQmYRZn8vAKZ0K7aPxcDeAnKAJxdokqrMkLgI6WX
 267 0glh/3Cs9dI+0D2GqMSygauKCD0vTIo3atkEQswDZR4pMx88gB4gmx7iIGrc/ZXs
 268 ZqHI7NQqeKtBwv2MCIj+/UTqdYDqbaniDwdVS8PE9nQnNU4gKffq3JbT+wRjJv6M
 269 Dr231bQHgAsFTVKbZgoL4gj4V7bLQUmW06+W1BQUJ2+Sn7fp+Xet9Xd3cGtNdxzQ
 270 zl6sGuiOlTNe0bfKP7QIMC7ekjflLBx8nwa2GZG19k3O0Z9JcDdN/kz6bGpPNssY
 271 AIOkTvLQjxIM9MhRqIv6ee0rowTWQPwXJP7yHApop4XZvVX6h9gG2gazqbDej2lo
 272 tAcfRAKj/LJ/bk9+OlNXOXVCKnwE1kXxZDsNJ51GdCungC56U/hmd3C1RhSLTpEc
 273 FlOWgXKNjbn6SQrlq1yASKKr80T0fL7PFoYwKZoQbKMAVZQC1VBWQltHkEzdL73x
 274 FwgZULNfdflF8sEhFC/zsVqckD/UnhzJz88PtCslMArJ7ntbEF1GzsSSfRfjBqnl
 275 kSUreE5XX6+c9yp5HcJBiMzp6ZqqWWaED5Y5xp1hZeYjuKbDMfY4tbWVc7Hy0dD2
 276 KGfZLp5umqvPNs7aVBPmvuxtrnxcJlUB8u2HoiHc6/TuhrpaopYGBhxL9+kezuLR
 277 v18nsAg8HOmcCNUS46NXQj/Mdpx8W+RsyzCQkJjieT/Yed20Zxq1zJoXIS0xAaUH
 278 TdE2dWqiT6TGlh/KQYk3KyFPNnDmzJm04a2VWIwpp4ypXyxrB7XxnVY6Q4YBYbZs
 279 FycxGjJWqj7lwc+lgZ8YV2WJ4snEo2os8SsA2GFWcUMiVTHDnEJvphDHmhWsf26A
 280 bbRqwaRXNjhj05DamTRsczgvfjdl1pk4lJYE4ES3nixtMe4s1X8nSmM4KvfyVDul
 281 J8uTpw1ZFnolTdfEL63BSf4FREoEqKB7cKuD7cpn7Rg4kRdM0/BLZGuxkH+pGMsI
 282 Bb8LecUWyjGsI6h74Wz/U2uBrfgdRqhR+UsfB2QLaRgM6kCXZ4vM0auuzBViFCwK
 283 tYMHzZWWz8gyVtJ0mzt1DrHCMx4pTS4yOhv4RkXBS/rub4VhVIsOGOGar5ZYtH47
 284 uBbdw3NC05JIFM7lI31d0s1fvvkTUR7eaqRW+SnR2c2oHpWlSO+Q0mrzx+vvOTdj
 285 xa713YtklBvyUUQr2SIbsXGpFnwjn+sXK1onAavp/tEax8sNZvxg5yeseFcWn+gD
 286 4rjk9FiSd1wp4fTDQFJ19evqruqKlq6k18l/ZAyUcEbIWSz2s3HfAAoAQyFPX1Q2
 287 95gVhRRw6lP4S6VPCfn/f+5jV4TcT6W/giRaHIk9Hty+g8bx1bFXaKVkQZ5R2Vmk
 288 qsZ65ZgCrYQJmcErPmYybvP7NBeDS4AOSgBQAGMQF4xywdNm6bniWWo3N/xkFv32
 289 /25x8okGgD8QcYKmhzieLSSzOvM/exB14RO84YZOkZzm01Jll0nac/LEazKoVWbn
 290 0VdcQ7pYEOqeMBXipsicNVYA/uhonp6op9cpIVYafPr0npCGwwhwcRuOrgSaZyCn
 291 VG2tPkEOv9LKmUbhnaDA2YUSzOOjcCpIVvTSBnUEiorYpfRYgQLrbcd2qhVvNCLX
 292 8ujZfMqXQXK8n5BK8JxNtczvaf+/2dfv1dQl0lHEAQhbNcsJ0t5GPhsSCC5oMBJl
 293 ZJuOEO/8PBWKEnMZOM+Dz7gEgsBhGyMFFrKpiwQRpyEshSD2QpnK6Lp0t5C8Za2G
 294 lhyZsEr+93AYOb5mm5+z02B4Yq9+RpepvjoqVeq/2uywZNq9MS98zVgNsmpryvTZ
 295 3HJHHB20u2jcVu0G3Nhiv22lD70JWCYFAOupjgVcUcaBxjxwUMAvgHg7JZqs6mC6
 296 tvTKwQ4NtDhoAhARlDeWSwCWb2vPH2H7Lmqokif1RfvJ0hrLzkJuHdWrzIYzXpPs
 297 +v9XJxLvbdKi9KU1Halq9S8dXT1fvs9DJTpUV/KW7QkRsTQJhTJBkQ07WUSJ4gBS
 298 Qp4efxSRNIfMj7DR6qLLf13RpIPTJO9/+gNuBIFcupWVfUL7tJZt8Qsf9eGwZfP+
 299 YyhjC8AyZjH4/9RzLHSjuq6apgw3Mzw0j572Xg6xDLMK8C3Tn/vrLOvAd96b9MkF
 300 3+ZHSLW3IgOiy+1jvK/20CZxNWc+pey8v4zji1hI17iohsipX/uZKRxhxF6+Xn2R
 301 UQp6qoxHAspNXgWQ57xg7C3+gmi4ciVr0fT9pg54ogcowrRH+I6wd0EpeWPbzfnQ
 302 pRmMVN+YtRsrEHwH3ToQ/i4vrtgA+eONuKT2uKZFikxA+VNmeeGdhkgqETMihQ==
 303         """)
 304         prv_key_our = hexdec("BFCF1D623E5CDD3032A7C6EABB4A923C46E43D640FFEAAF2C3ED39A8FA399924")[::-1]
 305
 306         def keker(curve, prv, pub, ukm):
 307             return kek_34102012256(
 308                 curve,
 309                 prv_unmarshal(prv),
 310                 pub_unmarshal(pub),
 311                 ukm_unmarshal(ukm),
 312             )
 313
 314         self.process_cms(
 315             content_info_raw,
 316             prv_key_our,
 317             "id-GostR3410-2001-CryptoPro-XchA-ParamSet",
 318             keker,
 319             b"Test data to encrypt.\n" * 100,
 320         )
 321
 322     def test_512(self):
 323         content_info_raw = b64decode("""
 324 MIIB0gYJKoZIhvcNAQcDoIIBwzCCAb8CAQAxggF8MIIBeAIBADBbMFYxKTAnBgkq
 325 hkiG9w0BCQEWGkdvc3RSMzQxMC0yMDEyQGV4YW1wbGUuY29tMSkwJwYDVQQDEyBH
 326 b3N0UjM0MTAtMjAxMiA1MTIgYml0cyBleGNoYW5nZQIBATAhBggqhQMHAQEBAjAV
 327 BgkqhQMHAQIBAgIGCCqFAwcBAQIDBIHyMIHvMCgEIIsYzbVLn33aLinQ7SLNA7y+
 328 Lrm02khqDCfXrNS9iiMhBATerS8zoIHCBgkqhQMHAQIFAQGggaowIQYIKoUDBwEB
 329 AQIwFQYJKoUDBwECAQICBggqhQMHAQECAwOBhAAEgYAYiTVLKpSGaAvjJEDQ0hdK
 330 qR/jek5Q9Q2pXC+NkOimQh7dpCi+wcaHlPcBk96hmpnOFvLaiokX8V6jqtBl5gdk
 331 M40kOXv8kcDdTzEVKA/ZLxA8xanL+gTD6ZjaPsUu06nsA2MoMBWcHLUzueaP3bGT
 332 /yHTV+Za5xdcQehag/lNBgQIvCw4uUl0XC4wOgYJKoZIhvcNAQcBMB8GBiqFAwIC
 333 FTAVBAj+1QzaXaN9FwYJKoUDBwECBQEBgAyK54euw0sHhEVEkA0=
 334         """)
 335         prv_key_our = hexdec("3FC01CDCD4EC5F972EB482774C41E66DB7F380528DFE9E67992BA05AEE462435757530E641077CE587B976C8EEB48C48FD33FD175F0C7DE6A44E014E6BCB074B")[::-1]
 336
 337         def keker(curve, prv, pub, ukm):
 338             return kek_34102012256(
 339                 curve,
 340                 prv_unmarshal(prv),
 341                 pub_unmarshal(pub),
 342                 ukm_unmarshal(ukm),
 343             )
 344
 345         self.process_cms(
 346             content_info_raw,
 347             prv_key_our,
 348             "id-tc26-gost-3410-12-512-paramSetB",
 349             keker,
 350             b"Test message",
 351         )
 352
 353
 354 @skipIf(not pyderasn_exists, "PyDERASN dependency is required")
 355 class TestEnvelopedKARI(TestCase):
 356     """EnvelopedData KeyAgreeRecipientInfo-based test vectors from
 357     "Использование алгоритмов ГОСТ 28147-89, ГОСТ Р 34.11 и ГОСТ Р 34.10
 358     в криптографических сообщениях формата CMS" (TK26CMS.pdf)
 359     """
 360
 361     def process_cms(
 362             self,
 363             content_info_raw,
 364             prv_key_our,
 365             curve_name,
 366             keker,
 367             plaintext_expected,
 368     ):
 369         sbox = "id-tc26-gost-28147-param-Z"
 370         content_info, tail = ContentInfo().decode(content_info_raw, ctx={
 371             "defines_by_path": [
 372                 (
 373                     (
 374                         "content",
 375                         DecodePathDefBy(id_envelopedData),
 376                         "recipientInfos",
 377                         any,
 378                         "kari",
 379                         "originator",
 380                         "originatorKey",
 381                         "algorithm",
 382                         "algorithm",
 383                     ),
 384                     (
 385                         (
 386                             ("..", "publicKey"),
 387                             {
 388                                 id_tc26_gost3410_2012_256: OctetString(),
 389                                 id_tc26_gost3410_2012_512: OctetString(),
 390                             },
 391                         ),
 392                     ),
 393                 ) for _ in (
 394                     id_tc26_gost3410_2012_256,
 395                     id_tc26_gost3410_2012_512,
 396                 )
 397             ],
 398         })
 399         self.assertSequenceEqual(tail, b"")
 400         self.assertIsNotNone(content_info["content"].defined)
 401         _, enveloped_data = content_info["content"].defined
 402         eci = enveloped_data["encryptedContentInfo"]
 403         kari = enveloped_data["recipientInfos"][0]["kari"]
 404         self.assertIsNotNone(kari["originator"]["originatorKey"]["publicKey"].defined)
 405         _, pub_key_their = kari["originator"]["originatorKey"]["publicKey"].defined
 406         ukm = bytes(kari["ukm"])
 407         rek = kari["recipientEncryptedKeys"][0]
 408         curve = CURVES[curve_name]
 409         kek = keker(curve, prv_key_our, bytes(pub_key_their), ukm)
 410         self.assertIsNotNone(rek["encryptedKey"].defined)
 411         _, encrypted_key = rek["encryptedKey"].defined
 412         key_wrapped = bytes(encrypted_key["encryptedKey"])
 413         mac = bytes(encrypted_key["macKey"])
 414         cek = unwrap_gost(kek, ukm + key_wrapped + mac, sbox=sbox)
 415         ciphertext = bytes(eci["encryptedContent"])
 416         self.assertIsNotNone(eci["contentEncryptionAlgorithm"]["parameters"].defined)
 417         _, encryption_params = eci["contentEncryptionAlgorithm"]["parameters"].defined
 418         iv = bytes(encryption_params["iv"])
 419         self.assertSequenceEqual(
 420             cfb_decrypt(cek, ciphertext, iv, sbox=sbox, mesh=True),
 421             plaintext_expected,
 422         )
 423
 424     def test_256(self):
 425         content_info_raw = b64decode("""
 426 MIIBhgYJKoZIhvcNAQcDoIIBdzCCAXMCAQIxggEwoYIBLAIBA6BooWYwHwYIKoUD
 427 BwEBAQEwEwYHKoUDAgIkAAYIKoUDBwEBAgIDQwAEQPAdWM4pO38iZ49UjaXQpq+a
 428 jhTa4KwY4B9TFMK7AiYmbFKE0eX/wvu69kFMQ2o3OJTnMOlr1WHiPYOmNO6C5hOh
 429 CgQIX+vNomZakEIwIgYIKoUDBwEBAQEwFgYHKoUDAgINADALBgkqhQMHAQIFAQEw
 430 gYwwgYkwWzBWMSkwJwYJKoZIhvcNAQkBFhpHb3N0UjM0MTAtMjAxMkBleGFtcGxl
 431 LmNvbTEpMCcGA1UEAxMgR29zdFIzNDEwLTIwMTIgMjU2IGJpdHMgZXhjaGFuZ2UC
 432 AQEEKjAoBCCNhrZOr7x2fsjjQAeDMv/tSoNRQSSQzzxgqdnYxJ3fIAQEgYLqVDA6
 433 BgkqhkiG9w0BBwEwHwYGKoUDAgIVMBUECHVmR/S+hlYiBgkqhQMHAQIFAQGADEI9
 434 UNjyuY+54uVcHw==
 435         """)
 436         prv_key_our = hexdec("BFCF1D623E5CDD3032A7C6EABB4A923C46E43D640FFEAAF2C3ED39A8FA399924")[::-1]
 437
 438         def keker(curve, prv, pub, ukm):
 439             return kek_34102012256(
 440                 curve,
 441                 prv_unmarshal(prv),
 442                 pub_unmarshal(pub),
 443                 ukm_unmarshal(ukm),
 444             )
 445
 446         self.process_cms(
 447             content_info_raw,
 448             prv_key_our,
 449             "id-GostR3410-2001-CryptoPro-XchA-ParamSet",
 450             keker,
 451             b"Test message",
 452         )
 453
 454     def test_512(self):
 455         content_info_raw = b64decode("""
 456 MIIBzAYJKoZIhvcNAQcDoIIBvTCCAbkCAQIxggF2oYIBcgIBA6CBraGBqjAhBggq
 457 hQMHAQEBAjAVBgkqhQMHAQIBAgIGCCqFAwcBAQIDA4GEAASBgCB0nQy/Ljva/mRj
 458 w6o+eDKIvnxwYIQB5XCHhZhCpHNZiWcFxFpYXZLWRPKifOxV7NStvqGE1+fkfhBe
 459 btkQu0tdC1XL3LO2Cp/jX16XhW/IP5rKV84qWr1Owy/6tnSsNRb+ez6IttwVvaVV
 460 pA6ONFy9p9gawoC8nitvAVJkWW0PoQoECDVfxzxgMTAHMCIGCCqFAwcBAQECMBYG
 461 ByqFAwICDQAwCwYJKoUDBwECBQEBMIGMMIGJMFswVjEpMCcGCSqGSIb3DQEJARYa
 462 R29zdFIzNDEwLTIwMTJAZXhhbXBsZS5jb20xKTAnBgNVBAMTIEdvc3RSMzQxMC0y
 463 MDEyIDUxMiBiaXRzIGV4Y2hhbmdlAgEBBCowKAQg8C/OcxRR0Uq8nDjHrQlayFb3
 464 WFUZEnEuAKcuG6dTOawEBLhi9hIwOgYJKoZIhvcNAQcBMB8GBiqFAwICFTAVBAiD
 465 1wH+CX6CwgYJKoUDBwECBQEBgAzUvQI4H2zRfgNgdlY=
 466         """)
 467         prv_key_our = hexdec("3FC01CDCD4EC5F972EB482774C41E66DB7F380528DFE9E67992BA05AEE462435757530E641077CE587B976C8EEB48C48FD33FD175F0C7DE6A44E014E6BCB074B")[::-1]
 468
 469         def keker(curve, prv, pub, ukm):
 470             return kek_34102012256(
 471                 curve,
 472                 prv_unmarshal(prv),
 473                 pub_unmarshal(pub),
 474                 ukm_unmarshal(ukm),
 475             )
 476
 477         self.process_cms(
 478             content_info_raw,
 479             prv_key_our,
 480             "id-tc26-gost-3410-12-512-paramSetB",
 481             keker,
 482             b"Test message",
 483         )
 484
 485
 486 @skipIf(not pyderasn_exists, "PyDERASN dependency is required")
 487 class TestR132356510252019(TestCase):
 488     """Test vectors from Р 1323565.1.025-2019
 489     """
 490     curve256 = CURVES["id-tc26-gost-3410-2012-256-paramSetA"]
 491     curve512 = CURVES["id-tc26-gost-3410-12-512-paramSetA"]
 492     psk = hexdec("8F5EEF8814D228FB2BBC5612323730CFA33DB7263CC2C0A01A6C6953F33D61D5")[::-1]
 493
 494     ca_prv = prv_unmarshal(hexdec("092F8D059E97E22B90B1AE99F0087FC4D26620B91550CBB437C191005A290810")[::-1])
 495     ca_pub = public_key(curve256, ca_prv)
 496     ca_cert = Certificate().decod(b64decode("""
 497 MIIB8DCCAZ2gAwIBAgIEAYy6gTAKBggqhQMHAQEDAjA4MQ0wCwYDVQQKEwRUSzI2
 498 MScwJQYDVQQDEx5DQSBUSzI2OiBHT1NUIDM0LjEwLTEyIDI1Ni1iaXQwHhcNMDEw
 499 MTAxMDAwMDAwWhcNNDkxMjMxMDAwMDAwWjA4MQ0wCwYDVQQKEwRUSzI2MScwJQYD
 500 VQQDEx5DQSBUSzI2OiBHT1NUIDM0LjEwLTEyIDI1Ni1iaXQwaDAhBggqhQMHAQEB
 501 ATAVBgkqhQMHAQIBAQEGCCqFAwcBAQICA0MABEAaSoKcjw54UACci6svELNF0IYM
 502 RIW8urUsqamIpoG46XCqrVOuI6Q13N4dwcRsbZdqByf+GC2f5ZfO3baN5bTKo4GF
 503 MIGCMGEGA1UdAQRaMFiAFIDZDPeZ+GZNk1OJjsCecS2npzESoTowODENMAsGA1UE
 504 ChMEVEsyNjEnMCUGA1UEAxMeQ0EgVEsyNjogR09TVCAzNC4xMC0xMiAyNTYtYml0
 505 ggQBjLqBMB0GA1UdDgQWBBSA2Qz3mfhmTZNTiY7AnnEtp6cxEjAKBggqhQMHAQED
 506 AgNBAAgv248F4OeNCkhlzJWec0evHYnMBlSzk1lDm0F875B7CqMrKh2MtJHXenbj
 507 Gc2uRn2IwgmSf/LZDrYsKKqZSxk=
 508 """))
 509
 510     sender256_prv = prv_unmarshal(hexdec("0B20810E449978C7C3B76C6FF77A16C532421139344A058EF56310B6B6F377E8")[::-1])
 511     sender256_pub = public_key(curve256, sender256_prv)
 512     sender256_cert = Certificate().decod(b64decode("""
 513 MIIB8zCCAaCgAwIBAgIEAYy6gjAKBggqhQMHAQEDAjA4MQ0wCwYDVQQKEwRUSzI2
 514 MScwJQYDVQQDEx5DQSBUSzI2OiBHT1NUIDM0LjEwLTEyIDI1Ni1iaXQwHhcNMDEw
 515 MTAxMDAwMDAwWhcNNDkxMjMxMDAwMDAwWjA7MQ0wCwYDVQQKEwRUSzI2MSowKAYD
 516 VQQDEyFPUklHSU5BVE9SOiBHT1NUIDM0LjEwLTEyIDI1Ni1iaXQwaDAhBggqhQMH
 517 AQEBATAVBgkqhQMHAQIBAQEGCCqFAwcBAQICA0MABECWKQ0TYllqg4GmY3tBJiyz
 518 pXUN+aOV9WbmTUinqrmEHP7KCNzoAzFg+04SSQpNNSHpQnm+jLAZhuJaJfqZ6VbT
 519 o4GFMIGCMGEGA1UdAQRaMFiAFIDZDPeZ+GZNk1OJjsCecS2npzESoTowODENMAsG
 520 A1UEChMEVEsyNjEnMCUGA1UEAxMeQ0EgVEsyNjogR09TVCAzNC4xMC0xMiAyNTYt
 521 Yml0ggQBjLqBMB0GA1UdDgQWBBTRnChHSWbQYwnJC62n2zu5Njd03zAKBggqhQMH
 522 AQEDAgNBAB41oijaXSEn58l78y2rhxY35/lKEq4XWZ70FtsNlVxWATyzgO5Wliwn
 523 t1O4GoZsxx8r6T/i7VG65UNmQlwdOKQ=
 524 """))
 525
 526     recipient256_prv = prv_unmarshal(hexdec("0DC8DC1FF2BC114BABC3F1CA8C51E4F58610427E197B1C2FBDBA4AE58CBFB7CE")[::-1])
 527     recipient256_pub = public_key(curve256, recipient256_prv)
 528     recipient256_cert = Certificate().decod(b64decode("""
 529 MIIB8jCCAZ+gAwIBAgIEAYy6gzAKBggqhQMHAQEDAjA4MQ0wCwYDVQQKEwRUSzI2
 530 MScwJQYDVQQDEx5DQSBUSzI2OiBHT1NUIDM0LjEwLTEyIDI1Ni1iaXQwHhcNMDEw
 531 MTAxMDAwMDAwWhcNNDkxMjMxMDAwMDAwWjA6MQ0wCwYDVQQKEwRUSzI2MSkwJwYD
 532 VQQDEyBSRUNJUElFTlQ6IEdPU1QgMzQuMTAtMTIgMjU2LWJpdDBoMCEGCCqFAwcB
 533 AQEBMBUGCSqFAwcBAgEBAQYIKoUDBwEBAgIDQwAEQL8nghlzLGMKWHuWhNMPMN5u
 534 L6SkGqRiJ6qZxZb+4dPKbBT9LNVvNKtwUed+BeE5kfqOfolPgFusnL1rnO9yREOj
 535 gYUwgYIwYQYDVR0BBFowWIAUgNkM95n4Zk2TU4mOwJ5xLaenMRKhOjA4MQ0wCwYD
 536 VQQKEwRUSzI2MScwJQYDVQQDEx5DQSBUSzI2OiBHT1NUIDM0LjEwLTEyIDI1Ni1i
 537 aXSCBAGMuoEwHQYDVR0OBBYEFLue+PUb9Oe+pziBU+MvNejjgrzFMAoGCCqFAwcB
 538 AQMCA0EAPP9Oad1/5jwokSjPpccsQ0xCdVYM+mGQ0IbpiZxQj8gnkt8sq4jR6Ya+
 539 I/BDkbZNDNE27TU1p3t5rE9NMEeViA==
 540 """))
 541
 542     sender512_prv = prv_unmarshal(hexdec("F95A5D44C5245F63F2E7DF8E782C1924EADCB8D06C52D91023179786154CBDB1561B4DF759D69F67EE1FBD5B68800E134BAA12818DA4F3AC75B0E5E6F9256911")[::-1])
 543     sender512_pub = public_key(curve512, sender512_prv)
 544     sender512_cert = Certificate().decod(b64decode("""
 545 MIICNjCCAeOgAwIBAgIEAYy6hDAKBggqhQMHAQEDAjA4MQ0wCwYDVQQKEwRUSzI2
 546 MScwJQYDVQQDEx5DQSBUSzI2OiBHT1NUIDM0LjEwLTEyIDI1Ni1iaXQwHhcNMDEw
 547 MTAxMDAwMDAwWhcNNDkxMjMxMDAwMDAwWjA7MQ0wCwYDVQQKEwRUSzI2MSowKAYD
 548 VQQDEyFPUklHSU5BVE9SOiBHT1NUIDM0LjEwLTEyIDUxMi1iaXQwgaowIQYIKoUD
 549 BwEBAQIwFQYJKoUDBwECAQIBBggqhQMHAQECAwOBhAAEgYC0i7davCkOGGVcYqFP
 550 tS1fUIROzB0fYARIe0tclTRpare/qzRuVRapqzzO+K21LDpYVfDPs2Sqa13ZN+Ts
 551 /JUlv59qCFB2cYpFyB/0kh4+K79yvz7r8+4WE0EmZf8T3ae/J1Jo6xGunecH1/G4
 552 hMts9HYLnxbwJDMNVGuIHV6gzqOBhTCBgjBhBgNVHQEEWjBYgBSA2Qz3mfhmTZNT
 553 iY7AnnEtp6cxEqE6MDgxDTALBgNVBAoTBFRLMjYxJzAlBgNVBAMTHkNBIFRLMjY6
 554 IEdPU1QgMzQuMTAtMTIgMjU2LWJpdIIEAYy6gTAdBgNVHQ4EFgQUK+l9HAscONGx
 555 zCcRpxRAmFHvlXowCgYIKoUDBwEBAwIDQQAbjA0Q41/rIKOOvjHKsAsoEJM+WJf6
 556 /PKXg2JaStthmw99bdtwwkU/qDbcje2tF6mt+XWyQBXwvfeES1GFY9fJ
 557 """))
 558
 559     recipient512_prv = prv_unmarshal(hexdec("A50315981F0A7C7FC05B4EB9591A62B1F84BD6FD518ACFCEDF0A7C9CF388D1F18757C056ADA5B38CBF24CDDB0F1519EF72DB1712CEF1920952E94AF1F9C575DC")[::-1])
 560     recipient512_pub = public_key(curve512, recipient512_prv)
 561     recipient512_cert = Certificate().decod(b64decode("""
 562 MIICNTCCAeKgAwIBAgIEAYy6hTAKBggqhQMHAQEDAjA4MQ0wCwYDVQQKEwRUSzI2
 563 MScwJQYDVQQDEx5DQSBUSzI2OiBHT1NUIDM0LjEwLTEyIDI1Ni1iaXQwHhcNMDEw
 564 MTAxMDAwMDAwWhcNNDkxMjMxMDAwMDAwWjA6MQ0wCwYDVQQKEwRUSzI2MSkwJwYD
 565 VQQDEyBSRUNJUElFTlQ6IEdPU1QgMzQuMTAtMTIgNTEyLWJpdDCBqjAhBggqhQMH
 566 AQEBAjAVBgkqhQMHAQIBAgEGCCqFAwcBAQIDA4GEAASBgKauwGYvUkzz19g0LP/p
 567 zeRdmwy1m+QSy9W5ZrL/AGuJofm2ARjz40ozNbW6bp9hkHu8x66LX7u5zz+QeS2+
 568 X5om18UXriComgO0+qhZbc+Hzu0eQ8FjOd8LpLk3TzzfBltfLOX5IiPLjeum+pSP
 569 0QjoXAVcrop//B4yvZIukvROo4GFMIGCMGEGA1UdAQRaMFiAFIDZDPeZ+GZNk1OJ
 570 jsCecS2npzESoTowODENMAsGA1UEChMEVEsyNjEnMCUGA1UEAxMeQ0EgVEsyNjog
 571 R09TVCAzNC4xMC0xMiAyNTYtYml0ggQBjLqBMB0GA1UdDgQWBBSrXT5VKhm/5uff
 572 kwW0XpG19k6AajAKBggqhQMHAQEDAgNBAAJBpsHRrQKZGb22LOzaReEB8rl2MbIR
 573 ja64NaM5h+cAFoHm6t/k+ziLh2A11rTakR+5of4NQ3EjEhuPtomP2tc=
 574 """))
 575
 576     def test_certs(self):
 577         """Certificates signatures
 578         """
 579         for prv, pub, curve, cert in (
 580                 (self.ca_prv, self.ca_pub, self.curve256, self.ca_cert),
 581                 (self.sender256_prv, self.sender256_pub, self.curve256, self.sender256_cert),
 582                 (self.recipient256_prv, self.recipient256_pub, self.curve256, self.recipient256_cert),
 583                 (self.sender512_prv, self.sender512_pub, self.curve512, self.sender512_cert),
 584                 (self.recipient512_prv, self.recipient512_pub, self.curve512, self.recipient512_cert),
 585         ):
 586             pub_our = public_key(curve, prv)
 587             self.assertEqual(pub_our, pub)
 588             self.assertSequenceEqual(
 589                 pub_marshal(pub_our),
 590                 bytes(OctetString().decod(bytes(
 591                     cert["tbsCertificate"]["subjectPublicKeyInfo"]["subjectPublicKey"]
 592                 ))),
 593             )
 594
 595         for cert in (
 596                 self.ca_cert,
 597                 self.sender256_cert,
 598                 self.recipient256_cert,
 599                 self.sender512_cert,
 600                 self.recipient512_cert,
 601         ):
 602             self.assertTrue(verify(
 603                 self.curve256,
 604                 self.ca_pub,
 605                 GOST34112012256(cert["tbsCertificate"].encode()).digest()[::-1],
 606                 bytes(cert["signatureValue"]),
 607             ))
 608
 609     def test_signed_with_attrs(self):
 610         ci = ContentInfo().decod(b64decode("""
 611 MIIENwYJKoZIhvcNAQcCoIIEKDCCBCQCAQExDDAKBggqhQMHAQECAzA7BgkqhkiG
 612 9w0BBwGgLgQsyu7t8vDu6/zt++kg7/Do7OXwIOTr/yDx8vDz6vLz8PsgU2lnbmVk
 613 RGF0YS6gggI6MIICNjCCAeOgAwIBAgIEAYy6hDAKBggqhQMHAQEDAjA4MQ0wCwYD
 614 VQQKEwRUSzI2MScwJQYDVQQDEx5DQSBUSzI2OiBHT1NUIDM0LjEwLTEyIDI1Ni1i
 615 aXQwHhcNMDEwMTAxMDAwMDAwWhcNNDkxMjMxMDAwMDAwWjA7MQ0wCwYDVQQKEwRU
 616 SzI2MSowKAYDVQQDEyFPUklHSU5BVE9SOiBHT1NUIDM0LjEwLTEyIDUxMi1iaXQw
 617 gaowIQYIKoUDBwEBAQIwFQYJKoUDBwECAQIBBggqhQMHAQECAwOBhAAEgYC0i7da
 618 vCkOGGVcYqFPtS1fUIROzB0fYARIe0tclTRpare/qzRuVRapqzzO+K21LDpYVfDP
 619 s2Sqa13ZN+Ts/JUlv59qCFB2cYpFyB/0kh4+K79yvz7r8+4WE0EmZf8T3ae/J1Jo
 620 6xGunecH1/G4hMts9HYLnxbwJDMNVGuIHV6gzqOBhTCBgjBhBgNVHQEEWjBYgBSA
 621 2Qz3mfhmTZNTiY7AnnEtp6cxEqE6MDgxDTALBgNVBAoTBFRLMjYxJzAlBgNVBAMT
 622 HkNBIFRLMjY6IEdPU1QgMzQuMTAtMTIgMjU2LWJpdIIEAYy6gTAdBgNVHQ4EFgQU
 623 K+l9HAscONGxzCcRpxRAmFHvlXowCgYIKoUDBwEBAwIDQQAbjA0Q41/rIKOOvjHK
 624 sAsoEJM+WJf6/PKXg2JaStthmw99bdtwwkU/qDbcje2tF6mt+XWyQBXwvfeES1GF
 625 Y9fJMYIBlDCCAZACAQEwQDA4MQ0wCwYDVQQKEwRUSzI2MScwJQYDVQQDEx5DQSBU
 626 SzI2OiBHT1NUIDM0LjEwLTEyIDI1Ni1iaXQCBAGMuoQwCgYIKoUDBwEBAgOgga0w
 627 GAYJKoZIhvcNAQkDMQsGCSqGSIb3DQEHATAcBgkqhkiG9w0BCQUxDxcNMTkwMzIw
 628 MTk1NTIyWjAiBgkqhkiG9w0BCWIxFQQTU2lnbmVkIGF0dHIncyB2YWx1ZTBPBgkq
 629 hkiG9w0BCQQxQgRAUdPHEukF5BIfo9DoQIMdnB0ZLkzq0RueEUZSNv07A7C+GKWi
 630 G62fueArg8uPCHPTUN6d/42p33fgMkEwH7f7cDAKBggqhQMHAQEBAgSBgGUnVka8
 631 FvTlClmOtj/FUUacBdE/nEBeMLOO/535VDYrXlftPE6zQf/4ghS7TQG2VRGQ3GWD
 632 +L3+W09A7d5uyyTEbvgtdllUG0OyqFwKmJEaYsMin87SFVs0cn1PGV1fOKeLluZa
 633 bLx5whxd+mzlpekL5i6ImRX+TpERxrA/xSe5
 634 """))
 635         _, sd = ci["content"].defined
 636         content = bytes(sd["encapContentInfo"]["eContent"])
 637         self.assertEqual(
 638             content.decode("cp1251"),
 639             text_type(u"Контрольный пример для структуры SignedData."),
 640         )
 641         si = sd["signerInfos"][0]
 642         self.assertEqual(
 643             si["digestAlgorithm"]["algorithm"],
 644             id_tc26_gost3411_2012_512,
 645         )
 646         digest = [
 647             bytes(attr["attrValues"][0].defined[1]) for attr in si["signedAttrs"]
 648             if attr["attrType"] == id_messageDigest
 649         ][0]
 650         self.assertSequenceEqual(digest, GOST34112012512(content).digest())
 651         self.assertTrue(verify(
 652             self.curve512,
 653             self.sender512_pub,
 654             GOST34112012512(
 655                 SignedAttributes(si["signedAttrs"]).encode()
 656             ).digest()[::-1],
 657             bytes(si["signature"]),
 658         ))
 659
 660     def test_signed_without_attrs(self):
 661         ci = ContentInfo().decod(b64decode("""
 662 MIIDAQYJKoZIhvcNAQcCoIIC8jCCAu4CAQExDDAKBggqhQMHAQECAjA7BgkqhkiG
 663 9w0BBwGgLgQsyu7t8vDu6/zt++kg7/Do7OXwIOTr/yDx8vDz6vLz8PsgU2lnbmVk
 664 RGF0YS6gggH3MIIB8zCCAaCgAwIBAgIEAYy6gjAKBggqhQMHAQEDAjA4MQ0wCwYD
 665 VQQKEwRUSzI2MScwJQYDVQQDEx5DQSBUSzI2OiBHT1NUIDM0LjEwLTEyIDI1Ni1i
 666 aXQwHhcNMDEwMTAxMDAwMDAwWhcNNDkxMjMxMDAwMDAwWjA7MQ0wCwYDVQQKEwRU
 667 SzI2MSowKAYDVQQDEyFPUklHSU5BVE9SOiBHT1NUIDM0LjEwLTEyIDI1Ni1iaXQw
 668 aDAhBggqhQMHAQEBATAVBgkqhQMHAQIBAQEGCCqFAwcBAQICA0MABECWKQ0TYllq
 669 g4GmY3tBJiyzpXUN+aOV9WbmTUinqrmEHP7KCNzoAzFg+04SSQpNNSHpQnm+jLAZ
 670 huJaJfqZ6VbTo4GFMIGCMGEGA1UdAQRaMFiAFIDZDPeZ+GZNk1OJjsCecS2npzES
 671 oTowODENMAsGA1UEChMEVEsyNjEnMCUGA1UEAxMeQ0EgVEsyNjogR09TVCAzNC4x
 672 MC0xMiAyNTYtYml0ggQBjLqBMB0GA1UdDgQWBBTRnChHSWbQYwnJC62n2zu5Njd0
 673 3zAKBggqhQMHAQEDAgNBAB41oijaXSEn58l78y2rhxY35/lKEq4XWZ70FtsNlVxW
 674 ATyzgO5Wliwnt1O4GoZsxx8r6T/i7VG65UNmQlwdOKQxgaIwgZ8CAQEwQDA4MQ0w
 675 CwYDVQQKEwRUSzI2MScwJQYDVQQDEx5DQSBUSzI2OiBHT1NUIDM0LjEwLTEyIDI1
 676 Ni1iaXQCBAGMuoIwCgYIKoUDBwEBAgIwCgYIKoUDBwEBAQEEQC6jZPA59szL9FiA
 677 0wC71EBE42ap6gKxklT800cu2FvbLu972GJYNSI7+UeanVU37OVWyenEXi2E5HkU
 678 94kBe8Q=
 679 """))
 680         _, sd = ci["content"].defined
 681         content = bytes(sd["encapContentInfo"]["eContent"])
 682         self.assertEqual(
 683             content.decode("cp1251"),
 684             text_type(u"Контрольный пример для структуры SignedData."),
 685         )
 686         si = sd["signerInfos"][0]
 687         self.assertEqual(
 688             si["digestAlgorithm"]["algorithm"],
 689             id_tc26_gost3411_2012_256,
 690         )
 691         self.assertTrue(verify(
 692             self.curve256,
 693             self.sender256_pub,
 694             GOST34112012256(content).digest()[::-1],
 695             bytes(si["signature"]),
 696         ))
 697
 698     def test_kari_ephemeral(self):
 699         ci = ContentInfo().decod(b64decode("""
 700 MIIB/gYJKoZIhvcNAQcDoIIB7zCCAesCAQIxggFioYIBXgIBA6CBo6GBoDAXBggq
 701 hQMHAQEBAjALBgkqhQMHAQIBAgEDgYQABIGAe+itJVNbHM35RHfzuwFJPYdPXqtW
 702 8hNEF7Z/XFEE2T71SRkhFX7ozYKQNh/TkVY9D4vG0LnD9Znr/pJyOjpsNb+dPcKX
 703 Kbk/0JQxoPGHxFzASVAFq0ov/yBe2XGFWMeKUqtaAr7SvoYS0oEhT5EuT8BXmecd
 704 nRe7NqOzESpb15ahIgQgsqHxOcdOp03l11S7k3OH1k1HNa5F8m9ctrOzH2846FMw
 705 FwYJKoUDBwEBBwIBMAoGCCqFAwcBAQYCMHYwdDBAMDgxDTALBgNVBAoTBFRLMjYx
 706 JzAlBgNVBAMTHkNBIFRLMjY6IEdPU1QgMzQuMTAtMTIgMjU2LWJpdAIEAYy6hQQw
 707 SxLc18zMwzLwXbcKqYhV/VzsdBgVArOHsSBIbaThJWE7zI37VGPMQJM5VXJ7GVcL
 708 MF0GCSqGSIb3DQEHATAfBgkqhQMHAQEFAgIwEgQQ6EeVlADDCz2cdEWKy+tM94Av
 709 yIFl/Ie4VeFFuczTsMsIaOUEe3Jn9GeVp8hZSj3O2q4hslQ/u/+Gj4QkSHm/M0ih
 710 ITAfBgkqhQMHAQAGAQExEgQQs1t6D3J3WCEvxunnEE15NQ==
 711 """))
 712         _, ed = ci["content"].defined
 713         kari = ed["recipientInfos"][0]["kari"]
 714         orig_key = kari["originator"]["originatorKey"]
 715         self.assertEqual(orig_key["algorithm"]["algorithm"], id_tc26_gost3410_2012_512)
 716         self.assertEqual(
 717             GostR34102012PublicKeyParameters().decod(
 718                 bytes(orig_key["algorithm"]["parameters"])
 719             )["publicKeyParamSet"],
 720             id_tc26_gost3410_2012_512_paramSetA,
 721         )
 722         orig_pub = pub_unmarshal(
 723             bytes(OctetString().decod(bytes(orig_key["publicKey"]))),
 724         )
 725         ukm = bytes(kari["ukm"])
 726         self.assertEqual(
 727             kari["keyEncryptionAlgorithm"]["algorithm"],
 728             id_gostr3412_2015_kuznyechik_wrap_kexp15,
 729         )
 730         self.assertEqual(
 731             kari["keyEncryptionAlgorithm"]["parameters"].defined[1]["algorithm"],
 732             id_tc26_agreement_gost3410_2012_512,
 733         )
 734         kexp = bytes(kari["recipientEncryptedKeys"][0]["encryptedKey"])
 735         keymat = keg(self.curve512, self.recipient512_prv, orig_pub, ukm)
 736         kim, kek = keymat[:KEYSIZE], keymat[KEYSIZE:]
 737         cek = kimp15(
 738             GOST3412Kuznechik(kek).encrypt,
 739             GOST3412Kuznechik(kim).encrypt,
 740             GOST3412Kuznechik.blocksize,
 741             kexp,
 742             ukm[24:24 + GOST3412Kuznechik.blocksize // 2],
 743         )
 744         eci = ed["encryptedContentInfo"]
 745         self.assertEqual(
 746             eci["contentEncryptionAlgorithm"]["algorithm"],
 747             id_gostr3412_2015_kuznyechik_ctracpkm_omac,
 748         )
 749         eci_ukm = bytes(
 750             eci["contentEncryptionAlgorithm"]["parameters"].defined[1]["ukm"]
 751         )
 752         self.assertEqual(ed["unprotectedAttrs"][0]["attrType"], id_cms_mac_attr)
 753         encrypted_mac = bytes(ed["unprotectedAttrs"][0]["attrValues"][0].defined[1])
 754         encrypted_content = bytes(eci["encryptedContent"])
 755         cek_enc, cek_mac = kdf_tree_gostr3411_2012_256(
 756             cek, b"kdf tree", eci_ukm[GOST3412Kuznechik.blocksize // 2:], 2,
 757         )
 758         content_and_tag = ctr_acpkm(
 759             GOST3412Kuznechik,
 760             GOST3412Kuznechik(cek_enc).encrypt,
 761             256 * 1024,
 762             GOST3412Kuznechik.blocksize,
 763             encrypted_content + encrypted_mac,
 764             eci_ukm[:GOST3412Kuznechik.blocksize // 2],
 765         )
 766         content = content_and_tag[:-GOST3412Kuznechik.blocksize]
 767         tag_expected = content_and_tag[-GOST3412Kuznechik.blocksize:]
 768         self.assertSequenceEqual(
 769             omac(
 770                 GOST3412Kuznechik(cek_mac).encrypt,
 771                 GOST3412Kuznechik.blocksize,
 772                 content,
 773             ),
 774             tag_expected,
 775         )
 776         self.assertEqual(
 777             content.decode("cp1251"),
 778             text_type(u"Контрольный пример для структуры EnvelopedData."),
 779         )
 780
 781     def test_kari_static(self):
 782         ci = ContentInfo().decod(b64decode("""
 783 MIIBawYJKoZIhvcNAQcDoIIBXDCCAVgCAQIxgfehgfQCAQOgQjBAMDgxDTALBgNV
 784 BAoTBFRLMjYxJzAlBgNVBAMTHkNBIFRLMjY6IEdPU1QgMzQuMTAtMTIgMjU2LWJp
 785 dAIEAYy6gqEiBCBvcfyuSF57y8vVyaw8Z0ch3wjC4lPKTrpVRXty4Rhk5DAXBgkq
 786 hQMHAQEHAQEwCgYIKoUDBwEBBgEwbjBsMEAwODENMAsGA1UEChMEVEsyNjEnMCUG
 787 A1UEAxMeQ0EgVEsyNjogR09TVCAzNC4xMC0xMiAyNTYtYml0AgQBjLqDBChPbi6B
 788 krXuLPexPAL2oUGCFWDGQHqINL5ExuMBG7/5XQRqriKARVa0MFkGCSqGSIb3DQEH
 789 ATAbBgkqhQMHAQEFAQEwDgQMdNdCKnYAAAAwqTEDgC9O2bYyTGQJ8WUQGq0zHwzX
 790 L0jFhWHTF1tcAxYmd9pX5i89UwIxhtYqyjX1QHju2g==
 791 """))
 792         _, ed = ci["content"].defined
 793         kari = ed["recipientInfos"][0]["kari"]
 794         ukm = bytes(kari["ukm"])
 795         self.assertEqual(
 796             kari["keyEncryptionAlgorithm"]["algorithm"],
 797             id_gostr3412_2015_magma_wrap_kexp15,
 798         )
 799         self.assertEqual(
 800             kari["keyEncryptionAlgorithm"]["parameters"].defined[1]["algorithm"],
 801             id_tc26_agreement_gost3410_2012_256,
 802         )
 803         kexp = bytes(kari["recipientEncryptedKeys"][0]["encryptedKey"])
 804         keymat = keg(
 805             self.curve256,
 806             self.recipient256_prv,
 807             self.sender256_pub,
 808             ukm,
 809         )
 810         kim, kek = keymat[:KEYSIZE], keymat[KEYSIZE:]
 811         cek = kimp15(
 812             GOST3412Magma(kek).encrypt,
 813             GOST3412Magma(kim).encrypt,
 814             GOST3412Magma.blocksize,
 815             kexp,
 816             ukm[24:24 + GOST3412Magma.blocksize // 2],
 817         )
 818         eci = ed["encryptedContentInfo"]
 819         self.assertEqual(
 820             eci["contentEncryptionAlgorithm"]["algorithm"],
 821             id_gostr3412_2015_magma_ctracpkm,
 822         )
 823         eci_ukm = bytes(
 824             eci["contentEncryptionAlgorithm"]["parameters"].defined[1]["ukm"]
 825         )
 826         content = ctr_acpkm(
 827             GOST3412Magma,
 828             GOST3412Magma(cek).encrypt,
 829             8 * 1024,
 830             GOST3412Magma.blocksize,
 831             bytes(eci["encryptedContent"]),
 832             eci_ukm[:GOST3412Magma.blocksize // 2],
 833         )
 834         self.assertEqual(
 835             content.decode("cp1251"),
 836             text_type(u"Контрольный пример для структуры EnvelopedData."),
 837         )
 838
 839     def test_ktri_256(self):
 840         ci = ContentInfo().decod(b64decode("""
 841 MIIBlQYJKoZIhvcNAQcDoIIBhjCCAYICAQAxggEcMIIBGAIBADBAMDgxDTALBgNV
 842 BAoTBFRLMjYxJzAlBgNVBAMTHkNBIFRLMjY6IEdPU1QgMzQuMTAtMTIgMjU2LWJp
 843 dAIEAYy6gzAXBgkqhQMHAQEHAgEwCgYIKoUDBwEBBgEEgbcwgbQEMFiMredFR3Mv
 844 3g2wqyVXRnrhYEBMNFaqqgBpHwPQh3bF98tt9HZPxRDCww0OPfxeuTBeMBcGCCqF
 845 AwcBAQEBMAsGCSqFAwcBAgEBAQNDAARAdFJ9ww+3ptvQiaQpizCldNYhl4DB1rl8
 846 Fx/2FIgnwssCbYRQ+UuRsTk9dfLLTGJG3JIEXKFxXWBgOrK965A5pAQg9f2/EHxG
 847 DfetwCe1a6uUDCWD+wp5dYOpfkry8YRDEJgwXQYJKoZIhvcNAQcBMB8GCSqFAwcB
 848 AQUCATASBBDUHNxmVclO/v3OaY9P7jxOgC+sD9CHGlEMRUpfGn6yfFDMExmYeby8
 849 LzdPJe1MkYV0qQgdC1zI3nQ7/4taf+4zRA==
 850 """))
 851         _, ed = ci["content"].defined
 852         ktri = ed["recipientInfos"][0]["ktri"]
 853         self.assertEqual(
 854             ktri["keyEncryptionAlgorithm"]["algorithm"],
 855             id_gostr3412_2015_kuznyechik_wrap_kexp15,
 856         )
 857         self.assertEqual(
 858             ktri["keyEncryptionAlgorithm"]["parameters"].defined[1]["algorithm"],
 859             id_tc26_agreement_gost3410_2012_256,
 860         )
 861         _, encrypted_key = ktri["encryptedKey"].defined
 862         self.assertEqual(
 863             encrypted_key["ephemeralPublicKey"]["algorithm"]["algorithm"],
 864             id_tc26_gost3410_2012_256,
 865         )
 866         pub = pub_unmarshal(bytes(OctetString().decod(
 867             bytes(encrypted_key["ephemeralPublicKey"]["subjectPublicKey"])
 868         )))
 869         ukm = bytes(encrypted_key["ukm"])
 870         kexp = bytes(encrypted_key["encryptedKey"])
 871         keymat = keg(self.curve256, self.recipient256_prv, pub, ukm)
 872         kim, kek = keymat[:KEYSIZE], keymat[KEYSIZE:]
 873         cek = kimp15(
 874             GOST3412Kuznechik(kek).encrypt,
 875             GOST3412Kuznechik(kim).encrypt,
 876             GOST3412Kuznechik.blocksize,
 877             kexp,
 878             ukm[24:24 + GOST3412Kuznechik.blocksize // 2],
 879         )
 880         eci = ed["encryptedContentInfo"]
 881         self.assertEqual(
 882             eci["contentEncryptionAlgorithm"]["algorithm"],
 883             id_gostr3412_2015_kuznyechik_ctracpkm,
 884         )
 885         eci_ukm = bytes(
 886             eci["contentEncryptionAlgorithm"]["parameters"].defined[1]["ukm"]
 887         )
 888         content = ctr_acpkm(
 889             GOST3412Kuznechik,
 890             GOST3412Kuznechik(cek).encrypt,
 891             256 * 1024,
 892             GOST3412Kuznechik.blocksize,
 893             bytes(eci["encryptedContent"]),
 894             eci_ukm[:GOST3412Kuznechik.blocksize // 2],
 895         )
 896         self.assertEqual(
 897             content.decode("cp1251"),
 898             text_type(u"Контрольный пример для структуры EnvelopedData."),
 899         )
 900
 901     def test_ktri_512(self):
 902         ci = ContentInfo().decod(b64decode("""
 903 MIIB5wYJKoZIhvcNAQcDoIIB2DCCAdQCAQAxggFXMIIBUwIBADBAMDgxDTALBgNVBAoTBFRL
 904 MjYxJzAlBgNVBAMTHkNBIFRLMjY6IEdPU1QgMzQuMTAtMTIgMjU2LWJpdAIEAYy6hTAXBgkq
 905 hQMHAQEHAQEwCgYIKoUDBwEBBgIEgfIwge8EKDof9JLTJVuIfP+c+imDCGyOLtAYENkoXpeU
 906 CdiGn0Lt65t3TN9G0bUwgaAwFwYIKoUDBwEBAQIwCwYJKoUDBwECAQIBA4GEAASBgDD9XXHn
 907 0j4EwY3DGB1wzHeThPRDlCwIvpmqWy00QDhS3fLRWiETSe9uMLeg27zI/EiserKMasNZum/i
 908 d09cmP8aTNIDNRtI5H9M0mH7LpEtY8L901MszvOKHLDYdemvz0JUqOvBtvoeQ6sV4Gl45zXx
 909 HTzBWlBw1FLX/ITWLapaBCAa09foTeA+PObBznGuCOPoKy+xz/9IIVmZidI6EYkIrzBZBgkq
 910 hkiG9w0BBwEwGwYJKoUDBwEBBQECMA4EDA4z1UwRL4WYzKFX/oAv8eEX3fWt6hxDpjO0rI7/
 911 CiJ/CwYGCKODJ9h63vAwlsWwcPwAjxcsLvCNlv6i4NqhGTAXBgkqhQMHAQAGAQExCgQIs2DT
 912 LuZ22Yw=
 913 """))
 914         _, ed = ci["content"].defined
 915         ktri = ed["recipientInfos"][0]["ktri"]
 916         self.assertEqual(
 917             ktri["keyEncryptionAlgorithm"]["algorithm"],
 918             id_gostr3412_2015_magma_wrap_kexp15,
 919         )
 920         self.assertEqual(
 921             ktri["keyEncryptionAlgorithm"]["parameters"].defined[1]["algorithm"],
 922             id_tc26_agreement_gost3410_2012_512,
 923         )
 924         _, encrypted_key = ktri["encryptedKey"].defined
 925         self.assertEqual(
 926             encrypted_key["ephemeralPublicKey"]["algorithm"]["algorithm"],
 927             id_tc26_gost3410_2012_512,
 928         )
 929         pub = pub_unmarshal(
 930             bytes(OctetString().decod(
 931                 bytes(encrypted_key["ephemeralPublicKey"]["subjectPublicKey"])
 932             )),
 933         )
 934         ukm = bytes(encrypted_key["ukm"])
 935         kexp = bytes(encrypted_key["encryptedKey"])
 936         keymat = keg(self.curve512, self.recipient512_prv, pub, ukm)
 937         kim, kek = keymat[:KEYSIZE], keymat[KEYSIZE:]
 938         cek = kimp15(
 939             GOST3412Magma(kek).encrypt,
 940             GOST3412Magma(kim).encrypt,
 941             GOST3412Magma.blocksize,
 942             kexp,
 943             ukm[24:24 + GOST3412Magma.blocksize // 2],
 944         )
 945         eci = ed["encryptedContentInfo"]
 946         self.assertEqual(
 947             eci["contentEncryptionAlgorithm"]["algorithm"],
 948             id_gostr3412_2015_magma_ctracpkm_omac,
 949         )
 950         eci_ukm = bytes(
 951             eci["contentEncryptionAlgorithm"]["parameters"].defined[1]["ukm"]
 952         )
 953         self.assertEqual(ed["unprotectedAttrs"][0]["attrType"], id_cms_mac_attr)
 954         encrypted_mac = bytes(ed["unprotectedAttrs"][0]["attrValues"][0].defined[1])
 955         encrypted_content = bytes(eci["encryptedContent"])
 956         cek_enc, cek_mac = kdf_tree_gostr3411_2012_256(
 957             cek, b"kdf tree", eci_ukm[GOST3412Magma.blocksize // 2:], 2,
 958         )
 959         content_and_tag = ctr_acpkm(
 960             GOST3412Magma,
 961             GOST3412Magma(cek_enc).encrypt,
 962             8 * 1024,
 963             GOST3412Magma.blocksize,
 964             encrypted_content + encrypted_mac,
 965             eci_ukm[:GOST3412Magma.blocksize // 2],
 966         )
 967         content = content_and_tag[:-GOST3412Magma.blocksize]
 968         tag_expected = content_and_tag[-GOST3412Magma.blocksize:]
 969         self.assertSequenceEqual(
 970             omac(
 971                 GOST3412Magma(cek_mac).encrypt,
 972                 GOST3412Magma.blocksize,
 973                 content,
 974             ),
 975             tag_expected,
 976         )
 977         self.assertEqual(
 978             content.decode("cp1251"),
 979             text_type(u"Контрольный пример для структуры EnvelopedData."),
 980         )
 981
 982     def test_digested256(self):
 983         ci = ContentInfo().decod(b64decode("""
 984 MH0GCSqGSIb3DQEHBaBwMG4CAQAwCgYIKoUDBwEBAgIwOwYJKoZIhvcNAQcBoC4ELMru7fLw
 985 7uv87fvpIO/w6Ozl8CDk6/8g8fLw8+ry8/D7IERpZ2VzdERhdGEuBCD/esPQYsGkzxZV8uUM
 986 IAWt6SI8KtxBP8NyG8AGbJ8i/Q==
 987 """))
 988         _, dd = ci["content"].defined
 989         eci = dd["encapContentInfo"]
 990         self.assertSequenceEqual(
 991             GOST34112012256(bytes(eci["eContent"])).digest(),
 992             bytes(dd["digest"]),
 993         )
 994
 995     def test_digested512(self):
 996         ci = ContentInfo().decod(b64decode("""
 997 MIGfBgkqhkiG9w0BBwWggZEwgY4CAQAwCgYIKoUDBwEBAgMwOwYJKoZIhvcNAQcBoC4ELMru
 998 7fLw7uv87fvpIO/w6Ozl8CDk6/8g8fLw8+ry8/D7IERpZ2VzdERhdGEuBEDe4VUvcKSRvU7R
 999 FVhFjajXY+nJSUkUsoi3oOeJBnru4PErt8RusPrCJs614ciHCM+ehrC4a+M1Nbq77F/Wsa/v
1000 """))
1001         _, dd = ci["content"].defined
1002         eci = dd["encapContentInfo"]
1003         self.assertSequenceEqual(
1004             GOST34112012512(bytes(eci["eContent"])).digest(),
1005             bytes(dd["digest"]),
1006         )
1007
1008     def test_encrypted_kuznechik(self):
1009         ci = ContentInfo().decod(b64decode("""
1010 MHEGCSqGSIb3DQEHBqBkMGICAQAwXQYJKoZIhvcNAQcBMB8GCSqFAwcBAQUCATASBBBSwX+z
1011 yOEPPuGyfpsRG4AigC/P8ftTdQMStfIThVkE/vpJlwaHgGv83m2bsPayeyuqpoTeEMOaqGcO
1012 0MxHWsC9hQ==
1013 """))
1014         _, ed = ci["content"].defined
1015         eci = ed["encryptedContentInfo"]
1016         self.assertEqual(
1017             eci["contentEncryptionAlgorithm"]["algorithm"],
1018             id_gostr3412_2015_kuznyechik_ctracpkm,
1019         )
1020         ukm = bytes(
1021             eci["contentEncryptionAlgorithm"]["parameters"].defined[1]["ukm"]
1022         )
1023         content = ctr_acpkm(
1024             GOST3412Kuznechik,
1025             GOST3412Kuznechik(self.psk).encrypt,
1026             256 * 1024,
1027             GOST3412Kuznechik.blocksize,
1028             bytes(eci["encryptedContent"]),
1029             ukm[:GOST3412Kuznechik.blocksize // 2],
1030         )
1031         self.assertEqual(
1032             content.decode("cp1251"),
1033             text_type(u"Контрольный пример для структуры EncryptedData."),
1034         )
1035
1036     def test_encrypted_magma(self):
1037         ci = ContentInfo().decod(b64decode("""
1038 MIGIBgkqhkiG9w0BBwagezB5AgEAMFkGCSqGSIb3DQEHATAbBgkqhQMHAQEFAQIwDgQMuncO
1039 u3uYPbI30vFCgC9Nsws4R09yLp6jUtadncWUPZGmCGpPKnXGgNHvEmUArgKJvu4FPHtLkHuL
1040 eQXZg6EZMBcGCSqFAwcBAAYBATEKBAjCbQoH632oGA==
1041 """))
1042         _, ed = ci["content"].defined
1043         eci = ed["encryptedContentInfo"]
1044         self.assertEqual(
1045             eci["contentEncryptionAlgorithm"]["algorithm"],
1046             id_gostr3412_2015_magma_ctracpkm_omac,
1047         )
1048         ukm = bytes(
1049             eci["contentEncryptionAlgorithm"]["parameters"].defined[1]["ukm"]
1050         )
1051         self.assertEqual(ed["unprotectedAttrs"][0]["attrType"], id_cms_mac_attr)
1052         encrypted_mac = bytes(ed["unprotectedAttrs"][0]["attrValues"][0].defined[1])
1053         cek_enc, cek_mac = kdf_tree_gostr3411_2012_256(
1054             self.psk, b"kdf tree", ukm[GOST3412Magma.blocksize // 2:], 2,
1055         )
1056         content_and_tag = ctr_acpkm(
1057             GOST3412Magma,
1058             GOST3412Magma(cek_enc).encrypt,
1059             8 * 1024,
1060             GOST3412Magma.blocksize,
1061             bytes(eci["encryptedContent"]) + encrypted_mac,
1062             ukm[:GOST3412Magma.blocksize // 2],
1063         )
1064         content = content_and_tag[:-GOST3412Magma.blocksize]
1065         tag_expected = content_and_tag[-GOST3412Magma.blocksize:]
1066         self.assertSequenceEqual(
1067             omac(
1068                 GOST3412Magma(cek_mac).encrypt,
1069                 GOST3412Magma.blocksize,
1070                 content,
1071             ),
1072             tag_expected,
1073         )
1074         self.assertEqual(
1075             content.decode("cp1251"),
1076             text_type(u"Контрольный пример для структуры EncryptedData."),
1077         )