Security

Unable to Setup SAML with Custom IDP [Unsupported signature algorithm]

sarwan123
New Member

Hi all,

I am trying to set up SAML with my Custom IDP but Splunk is returning an Unsupported algorithm error even if the algorithm type is correct in the SAML response. Can you kindly help/guide me regarding how to troubleshoot this issue? I have attached my SAML response and SAML configuration settings in this Post.

Error from Splunk Cloud:

sarwan123_0-1699352467966.png

SAML configurations in Splunk Cloud

sarwan123_4-1699352630140.png

 

sarwan123_1-1699352499133.png

 

Saml response

sarwan123_3-1699352562972.png

<ns2:SignedInfo>
8            <ns2:CanonicalizationMethod Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#"/>
9            <ns2:SignatureMethod Algorithm="http://www.w3.org/2001/04/xmldsig-more#rsa-sha256"/>
10            <ns2:Reference URI="#id-S7lv9JFItlthO8Lzr">
11                <ns2:Transforms>
12                    <ns2:Transform Algorithm="http://www.w3.org/2000/09/xmldsig#enveloped-signature"/>
13                    <ns2:Transform Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#"/>
14                </ns2:Transforms>
15                <ns2:DigestMethod Algorithm="http://www.w3.org/2001/04/xmlenc#sha256"/>
16                <ns2:DigestValue>
17                    Kq/4Vh3rMrw0H/yFvAnmr0KH8qrAbqYrU+stI/WODZY=18                </ns2:DigestValue>
19            </ns2:Reference>
20        </ns2:SignedInfo>

 Thanks

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