Add support for RFC 8358 (#73)

4 files changed, 252 insertions, 0 deletions

diff --git a/CHANGES.txt b/CHANGES.txt
index 3aa63bf..352175e 100644
--- a/CHANGES.txt
+++ b/CHANGES.txt
@@ -41,6 +41,7 @@ Revision 0.2.7, released XX-09-2019
 - Added RFC8479 providing Storing Validation Parameters in PKCS#8
 - Added RFC8360 providing Resource Public Key Infrastructure (RPKI)
   Validation Reconsidered
+- Added RFC8358 providing Digital Signatures on Internet-Draft Documents
 
 Revision 0.2.6, released 31-07-2019
 -----------------------------------
diff --git a/pyasn1_modules/rfc8358.py b/pyasn1_modules/rfc8358.py
new file mode 100644
index 0000000..647a366
--- /dev/null
+++ b/pyasn1_modules/rfc8358.py
@@ -0,0 +1,50 @@
+#
+# This file is part of pyasn1-modules software.
+#
+# Created by Russ Housley.
+#
+# Copyright (c) 2019, Vigil Security, LLC
+# License: http://snmplabs.com/pyasn1/license.html
+#
+# Digital Signatures on Internet-Draft Documents
+#
+# ASN.1 source from:
+# https://www.rfc-editor.org/rfc/rfc8358.txt
+#
+
+from pyasn1.type import univ
+
+from pyasn1_modules import rfc5652
+
+
+id_ct = univ.ObjectIdentifier('1.2.840.113549.1.9.16.1')
+
+id_ct_asciiTextWithCRLF = id_ct + (27, )
+
+id_ct_epub = id_ct + (39, )
+
+id_ct_htmlWithCRLF = id_ct + (38, )
+
+id_ct_pdf = id_ct + (29, )
+
+id_ct_postscript = id_ct + (30, )
+
+id_ct_utf8TextWithCRLF = id_ct + (37, )
+
+id_ct_xml = id_ct + (28, )
+
+
+# Map of Content Type OIDs to Content Types is added to the
+# ones that are in rfc5652.py
+
+_cmsContentTypesMapUpdate = {
+    id_ct_asciiTextWithCRLF: univ.OctetString(),
+    id_ct_epub: univ.OctetString(),
+    id_ct_htmlWithCRLF: univ.OctetString(),
+    id_ct_pdf: univ.OctetString(),
+    id_ct_postscript: univ.OctetString(),
+    id_ct_utf8TextWithCRLF: univ.OctetString(),
+    id_ct_xml: univ.OctetString(),
+}
+
+rfc5652.cmsContentTypesMap.update(_cmsContentTypesMapUpdate)
diff --git a/tests/__main__.py b/tests/__main__.py
index 94801f1..979b1ba 100644
--- a/tests/__main__.py
+++ b/tests/__main__.py
@@ -62,6 +62,7 @@ suite = unittest.TestLoader().loadTestsFromNames(
      'tests.test_rfc8018.suite',
      'tests.test_rfc8103.suite',
      'tests.test_rfc8226.suite',
+     'tests.test_rfc8358.suite',
      'tests.test_rfc8360.suite',
      'tests.test_rfc8398.suite',
      'tests.test_rfc8410.suite',
diff --git a/tests/test_rfc8358.py b/tests/test_rfc8358.py
new file mode 100644
index 0000000..bbe37e0
--- /dev/null
+++ b/tests/test_rfc8358.py
@@ -0,0 +1,200 @@
+#
+# This file is part of pyasn1-modules software.
+#
+# Created by Russ Housley
+# Copyright (c) 2019, Vigil Security, LLC
+# License: http://snmplabs.com/pyasn1/license.html
+#
+
+import sys
+
+from pyasn1.codec.der.decoder import decode as der_decode
+from pyasn1.codec.der.encoder import encode as der_encode
+
+from pyasn1_modules import pem
+from pyasn1_modules import rfc5652
+from pyasn1_modules import rfc8358
+
+try:
+    import unittest2 as unittest
+except ImportError:
+    import unittest
+
+
+class P7STestCase(unittest.TestCase):
+    pem_text_list = (
+"""\
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+""",
+"""\
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+""",
+"""\
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+zK6u0RRfrSQ2ebn+GOxnbovlG3Raul/1zOOGmTaIPzANBgkqhkiG9w0BAQEFAASCAgBlKYNd
+euVzPDqEa13k4nQthmyJUUqjWlAVolgohXioYok8Z5BkKmkp8ANLbvkJl0hV1Al1hutTRNeF
+a5ZeWyS6nAWyPFKfRSNqwWLMIi1dX+rO7Vhf15Lz944ZYsqO+O2f7rjWUJmi8/uJKD7cFDiW
+uKkPMgvqyIMnnC3ya/sC1vU+0Feqr5JcIMs2AHQeNVe8hzN4T9Pthyax7gqbxTkg3Gyt7Mwy
+WLZeK84oJmkl9ANeVgzq+P/cmqUaqtfkBFDSxaTag/eoYM3QfHNisr/jHCazqCh88VMgwhvk
+cl6NS9hdH+aOWqQ3FE1c7VJNoQRDT7ztyKCrRJFPc4wZL8tsGkKp1lP4WcaStcbUJ65AdWPb
+3CZonLY4UOBotAUpG/PObMCmWBEpr8MN0Q+kuEO2oAe9kBoFsv7MtNfyHE4CuOANRqGLRgOL
+72hN8Cy0sGWYUy+2chH3i50cT8XkDV5Rz2Z5xW3SfyAuW53j2WKLFsKkZjfkZBopSJM20V4E
+8pPnQQ/ByFwYPyS/xJZc24vsRxgogbrf11JU8hKVkfSsq3JXxUxe5w+Sh1XGTmO5tXDKFfyi
+S+VljWVifzXaR3pmTEQPhXH4nBa4K/HYytxofDP3EMli+imil2fFBbBedZkb5CIQ/Ly3soHZ
+dZlmZDkyeXJLpkNjRAsG6V82raZd9g==
+""",
+)
+
+    def setUp(self):
+        self.asn1Spec = rfc5652.ContentInfo()
+
+    def testDerCodec(self):
+        oids = [ ]
+        for pem_text in self.pem_text_list:
+            substrate = pem.readBase64fromText(pem_text)
+            asn1Object, rest = der_decode(substrate, asn1Spec=self.asn1Spec)
+            assert not rest
+            assert asn1Object.prettyPrint()
+            assert der_encode(asn1Object) == substrate
+
+            assert asn1Object['contentType'] == rfc5652.id_signedData
+            sd, rest = der_decode(asn1Object['content'], asn1Spec=rfc5652.SignedData())
+            assert not rest
+            assert sd.prettyPrint()
+            assert der_encode(sd) == asn1Object['content']
+
+            oids.append(sd['encapContentInfo']['eContentType'])
+
+        assert rfc8358.id_ct_asciiTextWithCRLF in oids
+        assert rfc8358.id_ct_pdf in oids
+        assert rfc8358.id_ct_xml in oids
+
+
+suite = unittest.TestLoader().loadTestsFromModule(sys.modules[__name__])
+
+if __name__ == '__main__':
+    import sys
+
+    result = unittest.TextTestRunner(verbosity=2).run(suite)
+    sys.exit(not result.wasSuccessful())