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2024-04-25 20:32:28 +03:00
commit 7b8035ff33
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+# 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 pyderasn import Any
+from pyderasn import BitString
+from pyderasn import Choice
+from pyderasn import Integer
+from pyderasn import Null
+from pyderasn import ObjectIdentifier
+from pyderasn import OctetString
+from pyderasn import Sequence
+from pyderasn import SetOf
+from pyderasn import tag_ctxc
+from pyderasn import tag_ctxp
+
+from pygost.asn1schemas.oids import id_tc26_gost3410_2012_256
+from pygost.asn1schemas.oids import id_tc26_gost3410_2012_512
+from pygost.asn1schemas.x509 import GostR34102012PublicKeyParameters
+
+
+class ECParameters(Choice):
+    schema = (
+        ("namedCurve", ObjectIdentifier()),
+        ("implicitCurve", Null()),
+        # ("specifiedCurve", SpecifiedECDomain()),
+    )
+
+
+ecPrivkeyVer1 = Integer(1)
+
+
+class ECPrivateKey(Sequence):
+    schema = (
+        ("version", Integer(ecPrivkeyVer1)),
+        ("privateKey", OctetString()),
+        ("parameters", ECParameters(expl=tag_ctxc(0), optional=True)),
+        ("publicKey", BitString(expl=tag_ctxc(1), optional=True)),
+    )
+
+
+class PrivateKeyAlgorithmIdentifier(Sequence):
+    schema = (
+        ("algorithm", ObjectIdentifier(defines=(
+            (("parameters",), {
+                id_tc26_gost3410_2012_256: GostR34102012PublicKeyParameters(),
+                id_tc26_gost3410_2012_512: GostR34102012PublicKeyParameters(),
+            }),
+        ))),
+        ("parameters", Any(optional=True)),
+    )
+
+
+class PrivateKey(OctetString):
+    pass
+
+
+class AttributeValue(Any):
+    pass
+
+
+class AttributeValues(SetOf):
+    schema = AttributeValue()
+
+
+class Attribute(Sequence):
+    schema = (
+        ("attrType", ObjectIdentifier()),
+        ("attrValues", AttributeValues()),
+    )
+
+
+class Attributes(SetOf):
+    schema = Attribute()
+
+
+class PublicKey(BitString):
+    pass
+
+
+class PrivateKeyInfo(Sequence):
+    schema = (
+        ("version", Integer(0)),
+        ("privateKeyAlgorithm", PrivateKeyAlgorithmIdentifier()),
+        ("privateKey", PrivateKey()),
+        ("attributes", Attributes(impl=tag_ctxc(0), optional=True)),
+        ("publicKey", PublicKey(impl=tag_ctxp(1), optional=True)),
+    )