<html xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<meta name="Generator" content="Microsoft Word 15 (filtered medium)">
<style><!--
/* Font Definitions */
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:"Times New Roman \(Body CS\)";
panose-1:2 11 6 4 2 2 2 2 2 4;}
@font-face
{font-family:Menlo;
panose-1:2 11 6 9 3 8 4 2 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
font-size:12.0pt;
font-family:"Calibri",sans-serif;}
p.MsoListParagraph, li.MsoListParagraph, div.MsoListParagraph
{mso-style-priority:34;
margin-top:0in;
margin-right:0in;
margin-bottom:0in;
margin-left:.5in;
font-size:12.0pt;
font-family:"Calibri",sans-serif;}
span.EmailStyle17
{mso-style-type:personal-compose;
font-family:"Calibri",sans-serif;
color:windowtext;
font-weight:normal;
font-style:normal;}
.MsoChpDefault
{mso-style-type:export-only;
font-size:12.0pt;}
@page WordSection1
{size:8.5in 11.0in;
margin:1.0in 1.0in 1.0in 1.0in;}
div.WordSection1
{page:WordSection1;}
/* List Definitions */
@list l0
{mso-list-id:942305757;
mso-list-type:hybrid;
mso-list-template-ids:-599632984 67698703 67698713 67698715 67698703 67698713 67698715 67698703 67698713 67698715;}
@list l0:level1
{mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-.25in;}
@list l0:level2
{mso-level-number-format:alpha-lower;
mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-.25in;}
@list l0:level3
{mso-level-number-format:roman-lower;
mso-level-tab-stop:none;
mso-level-number-position:right;
text-indent:-9.0pt;}
@list l0:level4
{mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-.25in;}
@list l0:level5
{mso-level-number-format:alpha-lower;
mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-.25in;}
@list l0:level6
{mso-level-number-format:roman-lower;
mso-level-tab-stop:none;
mso-level-number-position:right;
text-indent:-9.0pt;}
@list l0:level7
{mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-.25in;}
@list l0:level8
{mso-level-number-format:alpha-lower;
mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-.25in;}
@list l0:level9
{mso-level-number-format:roman-lower;
mso-level-tab-stop:none;
mso-level-number-position:right;
text-indent:-9.0pt;}
@list l1
{mso-list-id:1930773987;
mso-list-template-ids:-1939195250;}
@list l1:level1
{mso-level-tab-stop:.5in;
mso-level-number-position:left;
text-indent:-.25in;}
@list l1:level2
{mso-level-tab-stop:1.0in;
mso-level-number-position:left;
text-indent:-.25in;}
@list l1:level3
{mso-level-tab-stop:1.5in;
mso-level-number-position:left;
text-indent:-.25in;}
@list l1:level4
{mso-level-tab-stop:2.0in;
mso-level-number-position:left;
text-indent:-.25in;}
@list l1:level5
{mso-level-tab-stop:2.5in;
mso-level-number-position:left;
text-indent:-.25in;}
@list l1:level6
{mso-level-tab-stop:3.0in;
mso-level-number-position:left;
text-indent:-.25in;}
@list l1:level7
{mso-level-tab-stop:3.5in;
mso-level-number-position:left;
text-indent:-.25in;}
@list l1:level8
{mso-level-tab-stop:4.0in;
mso-level-number-position:left;
text-indent:-.25in;}
@list l1:level9
{mso-level-tab-stop:4.5in;
mso-level-number-position:left;
text-indent:-.25in;}
ol
{margin-bottom:0in;}
ul
{margin-bottom:0in;}
--></style>
</head>
<body lang="EN-US" link="#0563C1" vlink="#954F72" style="word-wrap:break-word">
<div class="WordSection1">
<p class="MsoNormal"><span style="font-size:11.0pt">The “Message was signed, but signature could not be verified.” is documented a https://shibboleth.atlassian.net/wiki/spaces/SP3/pages/2065335423/CommonErrors#Message-was-signed,-but-signature-could-not-be-verified.,
which says, initially<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt">The certificate that was used to sign the message didn't match the one the SP expected based on metadata. That can be caused by, in order of likelihood:<o:p></o:p></span></p>
<ol style="margin-top:0in" start="1" type="1">
<li class="MsoNormal" style="mso-list:l1 level1 lfo1"><span style="font-size:11.0pt">The certificate in the metadata is different from the one configured for the IdP, and hence, the one in the message. …<o:p></o:p></span></li></ol>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Consistent with this, shibd.log & shibd_warn.log contain:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">2022-07-11 13:05:06 WARN Shibboleth.SSO.SAML2 [1] [default]: detected a problem with assertion: Message was signed, but signature could not be verified.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">2022-07-11 13:05:06 WARN Shibboleth.SSO.SAML2 [1] [default]: error processing incoming assertion: Message was signed, but signature could not be verified.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Is it correct that the “certificate … configured for the IdP [at the SP]” is given by this chain of references?<o:p></o:p></span></p>
<ol style="margin-top:0in" start="1" type="1">
<li class="MsoListParagraph" style="margin-left:0in;mso-list:l0 level1 lfo2"><span style="font-size:11.0pt">shibd is configured by /etc/shibboleth/shibboleth2.xml<o:p></o:p></span></li><li class="MsoListParagraph" style="margin-left:0in;mso-list:l0 level1 lfo2"><span style="font-size:11.0pt">The MetadataProvider element shibboleth2.xml contains a path attribute, which names a file, call AzureIdPMetadata.xml in my system, that contains the
metadata describing the IdP.<o:p></o:p></span></li><li class="MsoListParagraph" style="margin-left:0in;mso-list:l0 level1 lfo2"><span style="font-size:11.0pt">AzureIdPMetadata.xml contains a certificate, identified by the nested elements EntityDescriptor.Signature.KeyInfo.X509Data.X509Certificate (where the
dot notation indicates nesting).<o:p></o:p></span></li></ol>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">I’m simultaneously verifying with the IdP managers that this certificate in AzureIdPMetadata.xml is the IdP’s certificate which is used to communicate with my SP.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Running shibboleth 3.2.2.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Thanks<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Arthur<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<div>
<div>
<p class="MsoNormal"><span style="font-size:11.0pt">-- <o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:10.5pt;color:black">Arthur Goldberg, PhD<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.5pt;color:black"><a href="https://labs.icahn.mssm.edu/msdw/"><span style="color:#0563C1">Mount Sinai Data Warehouse</span></a><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.5pt;color:black"><a href="https://labs.icahn.mssm.edu/minervalab/scientific-computing-and-data"><span style="color:#0563C1">Scientific Computing and Data</span></a><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.5pt;color:black">Associate Professor of Genetics and Genomic Sciences<br>
Institute for Data Science and Genomic Technology<br>
Mount Sinai School of Medicine<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.5pt;color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.5pt;color:black"><a href="mailto:Arthur.Goldberg@mssm.edu"><span style="color:#0563C1">Arthur.Goldberg@mssm.edu</span></a><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;color:black">646 526 5020<br>
<a href="https://mssm.zoom.us/my/arthur.goldberg?pwd=LzByMGJOZC9wM3A2aHV6OU94eUtSQT09"><span style="color:#0563C1">Zoom</span></a>
<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
</body>
</html>