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From 92f450a4b6eacb7950e5414d40d9949076cb096e Mon Sep 17 00:00:00 2001
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From: Nathaniel McCallum <npmccallum@redhat.com>
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Date: Tue, 20 Jun 2017 10:31:15 -0400
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Subject: [PATCH] ipa-otptoken-import: Make PBKDF2 refer to the pkcs5 namespace
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For some unknown reason, when I wrote the ipa-otptoken-import script
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I used bad input data which had the PBKDF2 parameters in the wrong
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XML namespace. I have corrected this input data to match RFC 6030.
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https://pagure.io/freeipa/issue/7035
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Signed-off-by: Nathaniel McCallum <npmccallum@redhat.com>
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Reviewed-By: Martin Basti <mbasti@redhat.com>
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Reviewed-By: Stanislav Laznicka <slaznick@redhat.com>
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---
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 ipaserver/install/ipa_otptoken_import.py      | 15 ++++++---------
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 ipatests/test_ipaserver/data/pskc-figure7.xml | 16 ++++++++--------
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 2 files changed, 14 insertions(+), 17 deletions(-)
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diff --git a/ipaserver/install/ipa_otptoken_import.py b/ipaserver/install/ipa_otptoken_import.py
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index 2580e2cfc97f4960af68a5eae407a7ebe3c7a257..31225e96b55c20bd78e9a8650848a28cf9feef63 100644
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--- a/ipaserver/install/ipa_otptoken_import.py
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+++ b/ipaserver/install/ipa_otptoken_import.py
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@@ -52,6 +52,7 @@ class ValidationError(Exception):
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 def fetchAll(element, xpath, conv=lambda x: x):
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     return [conv(e) for e in element.xpath(xpath, namespaces={
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+        "pkcs5": "http://www.rsasecurity.com/rsalabs/pkcs/schemas/pkcs-5v2-0#",
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         "pskc": "urn:ietf:params:xml:ns:keyprov:pskc",
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         "xenc11": "http://www.w3.org/2009/xmlenc11#",
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         "xenc": "http://www.w3.org/2001/04/xmlenc#",
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@@ -175,18 +176,14 @@ class XMLKeyDerivation(six.with_metaclass(abc.ABCMeta, object)):
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 class PBKDF2KeyDerivation(XMLKeyDerivation):
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     def __init__(self, enckey):
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-        params = fetch(enckey, "./xenc11:DerivedKey/xenc11:KeyDerivationMethod/xenc11:PBKDF2-params")
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+        params = fetch(enckey, "./xenc11:DerivedKey/xenc11:KeyDerivationMethod/pkcs5:PBKDF2-params")
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         if params is None:
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             raise ValueError("XML file is missing PBKDF2 parameters!")
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-        salt = fetch(
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-            params, "./xenc11:Salt/xenc11:Specified/text()", base64.b64decode)
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-        itrs = fetch(
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-            params, "./xenc11:IterationCount/text()", int)
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-        klen = fetch(
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-            params, "./xenc11:KeyLength/text()", int)
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-        hmod = fetch(
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-            params, "./xenc11:PRF/@Algorithm", convertHMACType, hashes.SHA1)
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+        salt = fetch(params, "./Salt/Specified/text()", base64.b64decode)
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+        itrs = fetch(params, "./IterationCount/text()", int)
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+        klen = fetch(params, "./KeyLength/text()", int)
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+        hmod = fetch(params, "./PRF/@Algorithm", convertHMACType, hashes.SHA1)
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         if salt is None:
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             raise ValueError("XML file is missing PBKDF2 salt!")
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diff --git a/ipatests/test_ipaserver/data/pskc-figure7.xml b/ipatests/test_ipaserver/data/pskc-figure7.xml
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index 1fb04fc319d7572d9d25ff34a0ce3378a939dfc6..808e272a5469a1c9eb4087ed53e0907bb80b39ad 100644
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--- a/ipatests/test_ipaserver/data/pskc-figure7.xml
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+++ b/ipatests/test_ipaserver/data/pskc-figure7.xml
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@@ -8,14 +8,14 @@
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     <xenc11:DerivedKey>
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 	  Algorithm="http://www.rsasecurity.com/rsalabs/pkcs/schemas/pkcs-5v2-0#pbkdf2">
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-        <xenc11:PBKDF2-params>
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-          <xenc11:Salt>
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-            <xenc11:Specified>Ej7/PEpyEpw=</xenc11:Specified>
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-          </xenc11:Salt>
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-          <xenc11:IterationCount>1000</xenc11:IterationCount>
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-          <xenc11:KeyLength>16</xenc11:KeyLength>
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-          <xenc11:PRF/>
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-        </xenc11:PBKDF2-params>
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+        <pkcs5:PBKDF2-params>
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+          <Salt>
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+            <Specified>Ej7/PEpyEpw=</Specified>
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+          </Salt>
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+          <IterationCount>1000</IterationCount>
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+          <KeyLength>16</KeyLength>
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+          <PRF/>
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+        </pkcs5:PBKDF2-params>
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       </xenc11:KeyDerivationMethod>
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       <xenc:ReferenceList>
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         <xenc:DataReference URI="#ED"/>
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--
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2.13.5