Please read the spec and my reply.

Aleksey

On 8/8/19 9:59 AM, Nimish Telang wrote:
Thanks --

<ds:CanonicalizationMethod Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#"/>

Is present in the SignedInfo -- does this not force the use of exc-c14n?

Or does that also need to be present in the <Reference /> ?




On 8/8/19, 12:47 PM, "Aleksey Sanin" <[email protected]> wrote:

     https://www.w3.org/TR/xmldsig-core1/#sec-CanonicalizationMethod
"CanonicalizationMethod is a required element that specifies the
     canonicalization algorithm applied to the SignedInfo element prior to
     performing signature calculations."
If you want to apply exc-c14n to the Reference, then you need to
     specify it as a transform in the Reference itself.
Best, Aleksey On 8/8/19 9:17 AM, Nimish Telang wrote:
     > Hi,
     >
     > Consider the following XML
     > doc:https://gist.github.com/nimish/b00fb8a75a8b4c424553783c7adb7656
     >
     > I’m trying to verify the wsu:Timestamp element using the sibling
     > detached signature.
     >
     > xmlsec1 --verify --id-attr:ID
     > 
"http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd:Timestamp";
     > --print-debug --store-references ./timestamp-wrapped.xml
     >
     > will fail signature verification.
     > Output:https://gist.github.com/nimish/868029115e41fee5fe56b0b5b40872f4
     >
     > I don’t see a “=== Transform: exc-c14n
     > (href=http://www.w3.org/2001/10/xml-exc-c14n#)” under the “REFERENCE
     > VERIFICATION CONTEXT” as I’d expect, which is likely what’s causing the
     > verification to fail. The only defined c14n algo is xml-exc-c14n.
     >
     > The python package signxml, which was used to generate this signature,
     > can verify this just fine. I am not sure if this is signxml behaving
     > badly, or xmlsec1.
     >
     > Any idea what I’m doing wrong?
     >
     > Nimish
     >
     >
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     >
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