update to python3.7

lib/python3.7/site-packages/asn1crypto/csr.py

@@ -0,0 +1,96 @@
+# coding: utf-8
+
+"""
+ASN.1 type classes for certificate signing requests (CSR). Exports the
+following items:
+
+ - CertificatationRequest()
+
+Other type classes are defined that help compose the types listed above.
+"""
+
+from __future__ import unicode_literals, division, absolute_import, print_function
+
+from .algos import SignedDigestAlgorithm
+from .core import (
+    Any,
+    Integer,
+    ObjectIdentifier,
+    OctetBitString,
+    Sequence,
+    SetOf,
+)
+from .keys import PublicKeyInfo
+from .x509 import DirectoryString, Extensions, Name
+
+
+# The structures in this file are taken from https://tools.ietf.org/html/rfc2986
+# and https://tools.ietf.org/html/rfc2985
+
+
+class Version(Integer):
+    _map = {
+        0: 'v1',
+    }
+
+
+class CSRAttributeType(ObjectIdentifier):
+    _map = {
+        '1.2.840.113549.1.9.7': 'challenge_password',
+        '1.2.840.113549.1.9.9': 'extended_certificate_attributes',
+        '1.2.840.113549.1.9.14': 'extension_request',
+    }
+
+
+class SetOfDirectoryString(SetOf):
+    _child_spec = DirectoryString
+
+
+class Attribute(Sequence):
+    _fields = [
+        ('type', ObjectIdentifier),
+        ('values', SetOf, {'spec': Any}),
+    ]
+
+
+class SetOfAttributes(SetOf):
+    _child_spec = Attribute
+
+
+class SetOfExtensions(SetOf):
+    _child_spec = Extensions
+
+
+class CRIAttribute(Sequence):
+    _fields = [
+        ('type', CSRAttributeType),
+        ('values', Any),
+    ]
+
+    _oid_pair = ('type', 'values')
+    _oid_specs = {
+        'challenge_password': SetOfDirectoryString,
+        'extended_certificate_attributes': SetOfAttributes,
+        'extension_request': SetOfExtensions,
+    }
+
+
+class CRIAttributes(SetOf):
+    _child_spec = CRIAttribute
+
+
+class CertificationRequestInfo(Sequence):
+    _fields = [
+        ('version', Version),
+        ('subject', Name),
+        ('subject_pk_info', PublicKeyInfo),
+        ('attributes', CRIAttributes, {'implicit': 0, 'optional': True}),
+    ]
+
+
+class CertificationRequest(Sequence):
+    _fields = [
+        ('certification_request_info', CertificationRequestInfo),
+        ('signature_algorithm', SignedDigestAlgorithm),
+        ('signature', OctetBitString),
+    ]