.

2024-04-25 20:32:28 +03:00
commit 7b8035ff33
101 changed files with 13658 additions and 0 deletions
@@ -0,0 +1,111 @@
+# coding: utf-8
+# PyGOST -- Pure Python GOST cryptographic functions library
+# Copyright (C) 2015-2023 Sergey Matveev <stargrave@stargrave.org>
+#
+# This program 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, version 3 of the License.
+#
+# This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+
+from os import urandom
+from unittest import TestCase
+
+from pygost.gost28147 import DEFAULT_SBOX
+from pygost.gost3412 import GOST3412Kuznechik
+from pygost.gost3412 import GOST3412Magma
+from pygost.utils import hexdec
+from pygost.wrap import kexp15
+from pygost.wrap import kimp15
+from pygost.wrap import unwrap_cryptopro
+from pygost.wrap import unwrap_gost
+from pygost.wrap import wrap_cryptopro
+from pygost.wrap import wrap_gost
+
+
+class WrapGostTest(TestCase):
+    def test_symmetric(self):
+        for sbox in (DEFAULT_SBOX, "id-tc26-gost-28147-param-Z"):
+            for _ in range(1 << 8):
+                kek = urandom(32)
+                cek = urandom(32)
+                ukm = urandom(8)
+                wrapped = wrap_gost(ukm, kek, cek, sbox=sbox)
+                unwrapped = unwrap_gost(kek, wrapped, sbox=sbox)
+                self.assertSequenceEqual(unwrapped, cek)
+
+    def test_invalid_length(self):
+        with self.assertRaises(ValueError):
+            unwrap_gost(urandom(32), urandom(41))
+        with self.assertRaises(ValueError):
+            unwrap_gost(urandom(32), urandom(45))
+
+
+class WrapCryptoproTest(TestCase):
+    def test_symmetric(self):
+        for sbox in (DEFAULT_SBOX, "id-tc26-gost-28147-param-Z"):
+            for _ in range(1 << 8):
+                kek = urandom(32)
+                cek = urandom(32)
+                ukm = urandom(8)
+                wrapped = wrap_cryptopro(ukm, kek, cek, sbox=sbox)
+                unwrapped = unwrap_cryptopro(kek, wrapped, sbox=sbox)
+                self.assertSequenceEqual(unwrapped, cek)
+
+
+class TestVectorKExp15(TestCase):
+    """Test vectors from Р 1323565.1.017-2018
+    """
+    key = hexdec("8899AABBCCDDEEFF0011223344556677FEDCBA98765432100123456789ABCDEF")
+    key_enc = hexdec("202122232425262728292A2B2C2D2E2F38393A3B3C3D3E3F3031323334353637")
+    key_mac = hexdec("08090A0B0C0D0E0F0001020304050607101112131415161718191A1B1C1D1E1F")
+
+    def test_magma(self):
+        iv = hexdec("67BED654")
+        kexp = kexp15(
+            GOST3412Magma(self.key_enc).encrypt,
+            GOST3412Magma(self.key_mac).encrypt,
+            GOST3412Magma.blocksize,
+            self.key,
+            iv,
+        )
+        self.assertSequenceEqual(kexp, hexdec("""
+CF D5 A1 2D 5B 81 B6 E1 E9 9C 91 6D 07 90 0C 6A
+C1 27 03 FB 3A BD ED 55 56 7B F3 74 2C 89 9C 75
+5D AF E7 B4 2E 3A 8B D9
+        """.replace("\n", "").replace(" ", "")))
+        self.assertSequenceEqual(kimp15(
+            GOST3412Magma(self.key_enc).encrypt,
+            GOST3412Magma(self.key_mac).encrypt,
+            GOST3412Magma.blocksize,
+            kexp,
+            iv,
+        ), self.key)
+
+    def test_kuznechik(self):
+        iv = hexdec("0909472DD9F26BE8")
+        kexp = kexp15(
+            GOST3412Kuznechik(self.key_enc).encrypt,
+            GOST3412Kuznechik(self.key_mac).encrypt,
+            GOST3412Kuznechik.blocksize,
+            self.key,
+            iv,
+        )
+        self.assertSequenceEqual(kexp, hexdec("""
+E3 61 84 E8 4E 8D 73 6F F3 6C C2 E5 AE 06 5D C6
+56 B2 3C 20 F5 49 B0 2F DF F8 8E 1F 3F 30 D8 C2
+9A 53 F3 CA 55 4D BA D8 0D E1 52 B9 A4 62 5B 32
+        """.replace("\n", "").replace(" ", "")))
+        self.assertSequenceEqual(kimp15(
+            GOST3412Kuznechik(self.key_enc).encrypt,
+            GOST3412Kuznechik(self.key_mac).encrypt,
+            GOST3412Kuznechik.blocksize,
+            kexp,
+            iv,
+        ), self.key)