Add support for RFC 8398 (#69)

1 files changed, 52 insertions, 0 deletions

diff --git a/pyasn1_modules/rfc8398.py b/pyasn1_modules/rfc8398.py
new file mode 100644
index 0000000..151b632
--- /dev/null
+++ b/pyasn1_modules/rfc8398.py
@@ -0,0 +1,52 @@
+#
+# This file is part of pyasn1-modules software.
+#
+# Created by Russ Housley with some assistance from asn1ate v.0.6.0.
+#
+# Copyright (c) 2019, Vigil Security, LLC
+# License: http://snmplabs.com/pyasn1/license.html
+#
+# Internationalized Email Addresses in X.509 Certificates
+#
+# ASN.1 source from:
+# https://www.rfc-editor.org/rfc/rfc8398.txt
+# https://www.rfc-editor.org/errata/eid5418
+#
+
+from pyasn1.type import char
+from pyasn1.type import constraint
+from pyasn1.type import univ
+
+from pyasn1_modules import rfc5280
+
+MAX = float('inf')
+
+
+# SmtpUTF8Mailbox contains Mailbox as specified in Section 3.3 of RFC 6531
+
+id_pkix = rfc5280.id_pkix
+
+id_on = id_pkix + (8, )
+
+id_on_SmtpUTF8Mailbox = id_on + (9, )
+
+
+class SmtpUTF8Mailbox(char.UTF8String):
+    pass
+
+SmtpUTF8Mailbox.subtypeSpec = constraint.ValueSizeConstraint(1, MAX)
+
+
+on_SmtpUTF8Mailbox = rfc5280.AnotherName()
+on_SmtpUTF8Mailbox['type-id'] = id_on_SmtpUTF8Mailbox
+on_SmtpUTF8Mailbox['value'] = SmtpUTF8Mailbox()
+
+
+# Map of Other Name OIDs to Other Name is added to the
+# ones that are in rfc5280.py
+
+_anotherNameMapUpdate = {
+    id_on_SmtpUTF8Mailbox: SmtpUTF8Mailbox(),
+}
+
+rfc5280.anotherNameMap.update(_anotherNameMapUpdate)