Re: XML Digital Signature throws NAMESPACE_ERR exception under OpenJDK 11 that works under Java SE 8, 9 and 10

Thu, 14 Feb 2019 14:57:21 -0800 



On 2/14/19, 11:08 AM, Sean Mullan wrote:

On 2/13/19 2:20 PM, Open eSignForms wrote:

Thanks, Sean.  I was able to find the updated test case source code.


A preliminary review seems to show worthwhile changes to our code.  
That is, the namespaces and such seem to make sense as you have them.


In particular, the use of:

domSignContext.putNamespacePrefix(XMLSignature.XMLNS, "dsig");

and adding this namespace to additional elements we added:

             String xmlns = "http://uri.etsi.org/01903/v1.1.1#";;


seem reasonable and an acceptable workaround for us.  I'm not sure if 
those were oversights from before, but likely were the result of it 
being based on Oracle/Java example code from Java 6 days...



We'll incorporate your namespace changes in our code and test, but 
this seems like it will work as I was able to confirm that your fixed 
version seems to run on Java 10 and Java 11.



It is interesting that the fixed code, though, generates different 
output on Java 10 and Java 11.  I'm not positive, but it seems that 
Java 11 adds '
' to the end of many lines that aren't present in 
Java 10's output.



This is the ASCII code for a carriage return, encoded in XML. I don't 
know why that behavior is different in JDK 11. This would be a 
question for the XML developers. I have copied Joe Wang, to see if he 
might know.


Hi Sean,


There hasn't been functional change to that area between JDK 10 and 11 
that I'm aware of. If you believe there's a behavior change, or you 
could isolate the issue down to the java.xml/xml processor, please file 
a bug.  I'll be happy to investigate.


Thanks,
Joe


--Sean



Under Java 10, a test run products this result:


<snapshot xmlns="http://open.esignforms.com/XMLSchema/2011"; 
timestamp="2019-02-13T11:02:30-08:00" type="document"><![CDATA[<html 
xmlns="http://www.w3.org/1999/xhtml";><head></head><body><p>Dummy HTML 
document</p></body></html>]]><dsig:Signature 
xmlns:dsig="http://www.w3.org/2000/09/xmldsig#"; 
Id="OpenESignForms_Seal"><dsig:SignedInfo><dsig:CanonicalizationMethod Algorithm="http://www.w3.org/2006/12/xml-c14n11#WithComments"/><dsig:SignatureMethod 
Algorithm="http://www.w3.org/2001/04/xmldsig-more#rsa-sha512"/><dsig:Reference 
Id="Payload_Reference_ID" URI=""><dsig:Transforms><dsig:Transform 
Algorithm="http://www.w3.org/2000/09/xmldsig#enveloped-signature"/></dsig:Transforms><dsig:DigestMethod 
Algorithm="http://www.w3.org/2001/04/xmlenc#sha512"/><dsig:DigestValue>Zqmii2rv6C+bFM+CSO3s8sAGOrl67HEnv4t8XUgQd5iguf9m7vcVJn3pJz5inCZfx5V9lTtDaj0u 

xbZSyWE5kQ==</dsig:DigestValue></dsig:Reference><dsig:Reference 
URI="#KeyInfo_ID"><dsig:DigestMethod 
Algorithm="http://www.w3.org/2001/04/xmlenc#sha512"/><dsig:DigestValue>kZM1pJpRXoeDuolU+kyK41BotQoW7ir5lfg/nNSMoC69bUC2OHzWbQ5Kug0gtrLVIuq5HRdzk6zc 

2N2jA0WKMQ==</dsig:DigestValue></dsig:Reference><dsig:Reference 
URI="#QualifyingProperties_ID"><dsig:DigestMethod 
Algorithm="http://www.w3.org/2001/04/xmlenc#sha512"/><dsig:DigestValue>AFx1CJi739IWZwJL1Y5KU2B+ZioT3ONMBLwLTdT/NTysV/+KYF7lZMgEHaGtLxvc6haIKKKzZisr 

r2YDQVgs5w==</dsig:DigestValue></dsig:Reference><dsig:Reference 
URI="#OpenESignForms_Seal_ID"><dsig:DigestMethod 
Algorithm="http://www.w3.org/2001/04/xmlenc#sha512"/><dsig:DigestValue>jhVDd7nvr4s2bu7LRNHb7yj2gQRzAE7fXcsgonq2Qsn4EWNfpqNEVUViIy9jh86tTs5ZiakaGAEs 

l9YV1hNnEg==</dsig:DigestValue></dsig:Reference></dsig:SignedInfo><dsig:SignatureValue>izJCFA5lBOjc7zhlc/1Wrsu+/jd0o0aPtemm4hM7aMKJvzkKddhjaHRY9iX4qtMZJtl7L1qj4YGN 

hxHc2Wjuj6F1ZFD9asPf/kumVliAqTwNvhfyVfmpbaZtzQVtOQWhNIC1PivbPfbwTKr1yztLbo0K 

B8TJWWiqHBjgEjlhw8X84buXVsCIUaAkOJG73Q0x9hMDVPf5y5R56xknLwjwzQPdveMI3zKvKvq5 

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kjXjJYxrQh64Y2RTAgp01Nbfj7QbvuKW93YDR6cpjNTM7EfJfQM/cz+VHHngFCRr/N0/WmM4j0A=</dsig:SignatureValue><dsig:KeyInfo 
Id="KeyInfo_ID"><dsig:KeyName>c42c747f-0f03-46a3-8ae8-81fc95464c8f</dsig:KeyName><dsig:KeyValue><dsig:RSAKeyValue><dsig:Modulus>kPCr+Fy0NInaICpnzDpGLkNQ93kd0NzZfTBfQOb3PUH1Bt4OrBWcvYoch7wUm6k1Il3apsi7s2B9 

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3xaXcwd32t1+/aOa7jgJRTgSklxhhcRCMHI9HWNlLgUWmvZ2O5G70reY4Kyg1NAS56qX48Xbckvy 

VMfem/JPPYT/veThnefIgQk=</dsig:X509Certificate></dsig:X509Data></dsig:KeyInfo><dsig:Object><QualifyingProperties 
xmlns:ns0="http://uri.etsi.org/01903/v1.1.1#"; 
ns0:Id="QualifyingProperties_ID" 
xmlns="http://uri.etsi.org/01903/v1.1.1#";><SignedProperties><SignedSignatureProperties><SigningTime>2019-02-13T11:02:30-08:00</SigningTime></SignedSignatureProperties><SignedDataObjectProperties><DataObjectFormat 
ns0:ObjectReference="#Payload_Reference_ID"><Description>description</Description><MimeType>text/html</MimeType></DataObjectFormat></SignedDataObjectProperties></SignedProperties></QualifyingProperties></dsig:Object><dsig:Object><dsig:SignatureProperties><dsig:SignatureProperty 
Id="OpenESignForms_Seal_ID" 
Target="#OpenESignForms_Seal"><OpenESignForms_XmlDigitalSignatureSeal 
xmlns:ns0="http://open.esignforms.com/XMLSchema/2011"; 
ns0:DeploymentHostAddress="192.1.1.1" 
xmlns:ns1="http://open.esignforms.com/XMLSchema/2011"; 
ns1:DeploymentHostName="open.esignforms.com" 
xmlns:ns2="http://open.esignforms.com/XMLSchema/2011"; 
ns2:DeploymentId="1.1.1.1" 
xmlns:ns3="http://open.esignforms.com/XMLSchema/2011"; 
ns3:SignerAddress="192.1.1.1" 
xmlns:ns4="http://open.esignforms.com/XMLSchema/2011"; 
ns4:SignerAgent="No-Browser-Test" 
xmlns:ns5="http://open.esignforms.com/XMLSchema/2011"; 
ns5:Timestamp="2019-02-13T11:02:30-08:00" 
xmlns:ns6="http://open.esignforms.com/XMLSchema/2011"; 
ns6:Version="19.1.19"/></dsig:SignatureProperty></dsig:SignatureProperties></dsig:Object></dsig:Signature></snapshot> 




while when run under Java 11 it shows what seems to be the same 
(clearly, the digest/hashes aren't the same as the 'timestamp' 
differs because they are actual times) except for lots of '&#13;' 
added to the digests and signatures:



<snapshot xmlns="http://open.esignforms.com/XMLSchema/2011"; 
timestamp="2019-02-13T11:01:22-08:00" type="document"><![CDATA[<html 
xmlns="http://www.w3.org/1999/xhtml";><head></head><body><p>Dummy HTML 
document</p></body></html>]]><dsig:Signature 
xmlns:dsig="http://www.w3.org/2000/09/xmldsig#"; 
Id="OpenESignForms_Seal"><dsig:SignedInfo><dsig:CanonicalizationMethod Algorithm="http://www.w3.org/2006/12/xml-c14n11#WithComments"/><dsig:SignatureMethod 
Algorithm="http://www.w3.org/2001/04/xmldsig-more#rsa-sha512"/><dsig:Reference 
Id="Payload_Reference_ID" URI=""><dsig:Transforms><dsig:Transform 
Algorithm="http://www.w3.org/2000/09/xmldsig#enveloped-signature"/></dsig:Transforms><dsig:DigestMethod 
Algorithm="http://www.w3.org/2001/04/xmlenc#sha512"/><dsig:DigestValue>LdB/ydGxr3VUoTshQtOvQNmMZmt2OHgLax4tSk9Lqb1c+X1h4Uc/RBVXwfI9QrVnITBz85Fi8Bwr&#13; 

7wyMjw84cA==</dsig:DigestValue></dsig:Reference><dsig:Reference 
URI="#KeyInfo_ID"><dsig:DigestMethod 
Algorithm="http://www.w3.org/2001/04/xmlenc#sha512"/><dsig:DigestValue>FkpexxTwhpCPHHsMrKGnBXE5hkZ/x10ArpzjX6ltYfOilvVAubzc9sNPwo6phw//ot1rSKPU5jTB&#13; 

LRD7p7t50g==</dsig:DigestValue></dsig:Reference><dsig:Reference 
URI="#QualifyingProperties_ID"><dsig:DigestMethod 
Algorithm="http://www.w3.org/2001/04/xmlenc#sha512"/><dsig:DigestValue>LxB0xAsDxKqeyCflaSUgMQOMhoxP4Gl9GfvlpCiL/gd9rz36qG4roaFRl+4PBC+IxzGiRDOqzQYX&#13; 

x6gSn5d1IQ==</dsig:DigestValue></dsig:Reference><dsig:Reference 
URI="#OpenESignForms_Seal_ID"><dsig:DigestMethod 
Algorithm="http://www.w3.org/2001/04/xmlenc#sha512"/><dsig:DigestValue>Pqd+9yaeBMytcG1sTTpuq+Wrd3lZSC18j7lv6VQ6LjUSz9VN7uwVNNn1E79mY8H6XUI2jbd/IozM&#13; 

oba2KF46ig==</dsig:DigestValue></dsig:Reference></dsig:SignedInfo><dsig:SignatureValue>IpdHZtzSw8TOnp0gfKMaCp30jJAPP8YCAIg4OBvRobIwHBFrG+O9v7peXRRA5nXi+fm4bdemi5jI&#13; 

/N2smS7W6lKMMeTzrYNJEmpD/0c/SVCs0M1peZmiWZD/F6GYP6RkhZfTglk9skKsZIme3W5lHL5e&#13; 

vTFno50J32oW0chq/jPzD42snoVQmVKS9wqqybGgRrm1W2RSWfziNo7QjXtJuR5eVuCtqpOLrGrS&#13; 

J0aLaaNLucia/6cJyZ13mz7131Lj2Y4oJbrbpzvrDY5xDfFDK+bRRMR3DCvTLgKcZZz5zxcAKYL8&#13; 

lG64U/tsmd/ZVn+d+fJGH03hPdvY/wMW7MTN1k/6S95PiNdx0cLeP0HLCug9zWiC7vUkrVDrsO9i&#13; 

qsvSYKcAH8vQlG1arZgGJn88Hg8EGjmmWXs15ulU3Lm8TOTXl/xi6O4stSgMi9dFSsE1ISHAPaxN&#13; 

D3Rqg7Bv7p/iEVn0xXq/C9AI3iwrpHbip8K81uJOsaiZgwR5D40XyYLV9FUPIacRclfT5EJKsx6k&#13; 

jYiprWMOMjmnlJwj2vI8zG6sYLVJdQywm2isWu5eHSw39Wof0BYfDeOzh0LrifUcnt86no5fUEOI&#13; 

OlNbqOO7rjuxtb+gt1iO2dTHfQhG99BCBQhC7AEMp67fIlPjEOECXldDTpzPMZ1K6cPlk22rpvc=</dsig:SignatureValue><dsig:KeyInfo 
Id="KeyInfo_ID"><dsig:KeyName>184a40b0-78b6-4070-a7d7-1497078a06e4</dsig:KeyName><dsig:KeyValue><dsig:RSAKeyValue><dsig:Modulus>kPCr+Fy0NInaICpnzDpGLkNQ93kd0NzZfTBfQOb3PUH1Bt4OrBWcvYoch7wUm6k1Il3apsi7s2B9&#13; 

Geqbh7tzF41MwvTWBNCQg3Kw3FKcF0jzKZ7D+na8Ndc52YPmsjU9zjpf+SDfKqb0NIDe3Bo3csWW&#13; 

I42CkF3sI9AFknogovrfRM7ITJatA6WRHU8Kv6Qee8VfXZ1XAdKzWcc9EWbj74Kagiz8bMeATujU&#13; 

MCI/XQb1luwvlrVxZUtnfLL9WD6Nvmj3uDYK52z5E80vqTKIq7EJvmlR7kcEdH1NuxDQSWCJQgQX&#13; 

oU2TzuB0Nmov7P/pZ40JPF72Knb18Rgu4aRSMiaKKw+jzFHpw75VlQn2YkdfjNMwfUaEaZ4wuHoJ&#13; 

Qjud79jilbam++eUQFRxjcXK9Nl/z01KtmuV1mPhm97LRaKQlsbBxa56pncrkAmF0cuIipPzo9aB&#13; 

snJZkUQuwQtD/moDkUm84v5SOU1hn4RpWdGAkaJ1ubIrnKfF0qKmbCOcO69SEL5zP0JXEgSZ+D6z&#13; 

Vv7VkAJizdJ91KKs4y/ypel4lurNcyBd3hzw8xpz9joMl8DOTLCcLhGp350Vrccbh9vauAcRcK/n&#13; 

C+yaPI/mghmN2D2yZ3LZ3Z6k78Jl9BUV7PL5YyuxQmZjVP07lJvi6glLUm23o+c3c4D7rgHL4gM=</dsig:Modulus><dsig:Exponent>AQAB</dsig:Exponent></dsig:RSAKeyValue></dsig:KeyValue><dsig:X509Data><dsig:X509Certificate>MIIKvTCCCKWgAwIBAgIJAPaU10x5GhRQMA0GCSqGSIb3DQEBDQUAMIHYMU0wSwYDVQQDDERPcGVu&#13; 

X2VTaWduRm9ybXNfaHR0cHM6Ly9sb2NhbGhvc3QubG9jYWxkb21haW4vb3Blbi1lU2lnbkZvcm1z&#13; 

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VMfem/JPPYT/veThnefIgQk=</dsig:X509Certificate></dsig:X509Data></dsig:KeyInfo><dsig:Object><QualifyingProperties 
xmlns:ns0="http://uri.etsi.org/01903/v1.1.1#"; 
ns0:Id="QualifyingProperties_ID" 
xmlns="http://uri.etsi.org/01903/v1.1.1#";><SignedProperties><SignedSignatureProperties><SigningTime>2019-02-13T11:01:22-08:00</SigningTime></SignedSignatureProperties><SignedDataObjectProperties><DataObjectFormat 
ns0:ObjectReference="#Payload_Reference_ID"><Description>description</Description><MimeType>text/html</MimeType></DataObjectFormat></SignedDataObjectProperties></SignedProperties></QualifyingProperties></dsig:Object><dsig:Object><dsig:SignatureProperties><dsig:SignatureProperty 
Id="OpenESignForms_Seal_ID" 
Target="#OpenESignForms_Seal"><OpenESignForms_XmlDigitalSignatureSeal 
xmlns:ns0="http://open.esignforms.com/XMLSchema/2011"; 
ns0:DeploymentHostAddress="192.1.1.1" 
xmlns:ns1="http://open.esignforms.com/XMLSchema/2011"; 
ns1:DeploymentHostName="open.esignforms.com" 
xmlns:ns2="http://open.esignforms.com/XMLSchema/2011"; 
ns2:DeploymentId="1.1.1.1" 
xmlns:ns3="http://open.esignforms.com/XMLSchema/2011"; 
ns3:SignerAddress="192.1.1.1" 
xmlns:ns4="http://open.esignforms.com/XMLSchema/2011"; 
ns4:SignerAgent="No-Browser-Test" 
xmlns:ns5="http://open.esignforms.com/XMLSchema/2011"; 
ns5:Timestamp="2019-02-13T11:01:22-08:00" 
xmlns:ns6="http://open.esignforms.com/XMLSchema/2011"; 
ns6:Version="19.1.19"/></dsig:SignatureProperty></dsig:SignatureProperties></dsig:Object></dsig:Signature></snapshot> 




It's particularly odd because hex 13 isn't a typical character (^S).


Any idea what that difference is about for the base64 digests and 
signatures?


David


On 2/13/19 6:03 AM, Sean Mullan wrote:

On 2/12/19 6:28 PM, Open eSignForms wrote:

Thanks for the update, Sean.  I'm a bit perplexed because I found 
the original code works under Java 9 and Java 10, so it seems like 
the change occurred in Java 11.


Sorry, that was a typo, I meant to say JDK 11.


I don't see the modified version of the test case.  If you attached 
it, it somehow didn't make it through to me.



If it's just a matter of making the code more correct, we'd love to 
make the changes.  My concern, of course, is that we've already 
done millions of XML digital signatures, so we need that to 
continue to verify correctly (and even under Java 11, it seems that 
the verify code works against previously digitally signed content) 
even if we now start digitally signing using more update-to-date code.



The verification of pre-existing signatures should continue to work 
regardless of how this bug is addressed.



Please send over the modified test case and I'll take a look.



It is attached to the bug report in the Attachments section: 
https://bugs.openjdk.java.net/browse/JDK-8218629 (make sure you 
download the one I added yesterday).


--Sean



Thanks!
David

On 2/12/19 2:14 PM, Sean Mullan wrote:

The bug is now at https://bugs.openjdk.java.net/browse/JDK-8218629


I have started looking at this issue and have some progress I can 
report.



In JDK 9, we updated the version of the Apache XML Signature 
implementation in the JDK. Some of the marshalling code was 
rewritten such that it will throw Exceptions if legacy DOM level 1 
methods were used to create XML content which is then passed into 
XMLObject and similar XMLSignature types that take DOMStructure 
objects. This is because the DOM level 1 methods do not support 
namespaces.



I am still evaluating what the best fix is. However, you can 
workaround the issue by always using DOM level 3 methods which are 
namespace aware. For example, use Document.createElementNS instead 
of Document.createElement and Element.createAttributeNS instead of 
Element.createAttribute.



Using legacy or non-namespace aware XML parsers or implementations 
is not recommended and the XML Signature Best Practices document 
gives some rationale: 
https://www.w3.org/TR/xmldsig-bestpractices/#signing-xml-without-namespaces 

That said, this is a regression in behavior so it would be best if 
we could restore the previous behavior.



I have attached a modified version of the test case to the bug 
report which no longer throws an Exception. Let me know if this is 
an acceptable workaround. Double-check the namespaces that I used 
to make sure they are correct.


--Sean


On 2/7/19 11:23 AM, Open eSignForms wrote:


On 2/7/19 7:49 AM, Sean Mullan wrote:

On 2/6/19 4:51 PM, Open eSignForms wrote:

I have a test version of the code that can run standalone and 
shows the bug.  I'm not sure how best to transfer this 
information to the forum for those to play with, but it is 
included below.



Thanks, I can reproduce the issue now. I will need to debug 
further to see what might be causing this.


--Sean

























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