SSO with signing and signature validation doesn't work

问题

I have succesfully configured SSO using WSO2IS 4.6.0 and spring saml grails plugin, but when I enable signing and signature validation like this: I see errors on WSO2 console

WARN {org.wso2.carbon.identity.sso.saml.util.SAMLSSOUtil} -  Signature Validation Failed for the SAML Assertion : Signature is invalid.
DEBUG org.wso2.carbon.identity.sso.saml.util.SAMLSSOUtil} -  org.opensaml.xml.validation.ValidationException: Unable to evaluate key against signature
WARN {org.wso2.carbon.identity.sso.saml.processors.SPInitSSOAuthnRequestProcessor} -  Signature validation for Authentication Request failed.

I exported default public key (wso2carbon) from WSO2 keystore (wso2carbon.jks), and inserted certificate into X509Certificate section in my SP and IdP metadata.
Here is my IdP metadata:

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<EntityDescriptor entityID="https://localhost:9443/samlsso" xmlns="urn:oasis:names:tc:SAML:2.0:metadata">
<IDPSSODescriptor protocolSupportEnumeration="urn:oasis:names:tc:SAML:2.0:protocol">
    <KeyDescriptor use="signing">
        <ds:KeyInfo xmlns:ds="http://www.w3.org/2000/09/xmldsig#">
            <ds:X509Data>
                <ds:X509Certificate>***
                </ds:X509Certificate>
            </ds:X509Data>
        </ds:KeyInfo>
    </KeyDescriptor>
    <SingleLogoutService Binding="urn:oasis:names:tc:SAML:2.0:bindings:HTTP-Redirect"
                         Location="https://localhost:9443/samlsso"
                         ResponseLocation="https://localhost:9443/samlsso"/>
    <SingleSignOnService Binding="urn:oasis:names:tc:SAML:2.0:bindings:HTTP-POST"
                         Location="https://localhost:9443/samlsso"/>
    <SingleSignOnService Binding="urn:oasis:names:tc:SAML:2.0:bindings:HTTP-Redirect"
                         Location="https://localhost:9443/samlsso"/>
</IDPSSODescriptor>
</EntityDescriptor>

And SP metadata:

<?xml version="1.0" encoding="UTF-8"?>
<md:EntityDescriptor entityID="local" xmlns:md="urn:oasis:names:tc:SAML:2.0:metadata">
<md:SPSSODescriptor AuthnRequestsSigned="true" WantAssertionsSigned="false" protocolSupportEnumeration="urn:oasis:names:tc:SAML:2.0:protocol">
    <md:Extensions>
        <idpdisco:DiscoveryResponse xmlns:idpdisco="urn:oasis:names:tc:SAML:profiles:SSO:idp-discovery-protocol" Binding="urn:oasis:names:tc:SAML:profiles:SSO:idp-discovery-protocol" Location="http://localhost:8080/spring-security-saml/login/auth/alias/localhost?disco=true"/>
    </md:Extensions>
    <md:KeyDescriptor use="signing">
        <ds:KeyInfo xmlns:ds="http://www.w3.org/2000/09/xmldsig#">
            <ds:X509Data>
                <ds:X509Certificate>
                    ****
                </ds:X509Certificate>
            </ds:X509Data>
        </ds:KeyInfo>
    </md:KeyDescriptor>
    <md:SingleLogoutService Binding="urn:oasis:names:tc:SAML:2.0:bindings:HTTP-POST" Location="http://localhost:8080/***/saml/SingleLogout/alias/local"/>
    <md:SingleLogoutService Binding="urn:oasis:names:tc:SAML:2.0:bindings:HTTP-Redirect" Location="http://localhost:8080/***/saml/SingleLogout/alias/local"/>
    <md:SingleLogoutService Binding="urn:oasis:names:tc:SAML:2.0:bindings:SOAP" Location="http://localhost:8080/***/saml/logout/SingleLogout/local"/>
    <md:NameIDFormat>urn:oasis:names:tc:SAML:1.1:nameid-format:emailAddress</md:NameIDFormat>
    <md:NameIDFormat>urn:oasis:names:tc:SAML:2.0:nameid-format:transient</md:NameIDFormat>
    <md:NameIDFormat>urn:oasis:names:tc:SAML:2.0:nameid-format:persistent</md:NameIDFormat>
    <md:NameIDFormat>urn:oasis:names:tc:SAML:1.1:nameid-format:unspecified</md:NameIDFormat>
    <md:NameIDFormat>urn:oasis:names:tc:SAML:1.1:nameid-format:X509SubjectName</md:NameIDFormat>
    <md:AssertionConsumerService Binding="urn:oasis:names:tc:SAML:2.0:bindings:HTTP-POST" Location="http://localhost:8080/***/saml/SSO/alias/local" index="0" isDefault="true"/>
    <md:AssertionConsumerService Binding="urn:oasis:names:tc:SAML:2.0:bindings:HTTP-Artifact" Location="http://localhost:8080/***/saml/SSO/alias/local" index="1" isDefault="false"/>
</md:SPSSODescriptor>
</md:EntityDescriptor>

My concern is that I use wrong certificate in either SP or IdP metadata, or it should be signed somehow.

What certificate should I use for IdP and what for SP metadata, and can I check if they are valid?
How can I get it properly using public key exported from WSO2 keystore?
Thank you!

UPDATE: It works on 5.1.0 even with incorrect certificates in metadata, looks like an issue. Here is 5.1.0 Configuration:

回答1:

You have to import your IDP (Server) certificate as a trust in your SP machine.. Your IDP is hosted as https so.. Import IDP trust In SP box at your custom certificate location/JDK Cacerts (Java\jdk1.8.0_45\jre\lib\security\cacerts) and then you can try the below command to check your IDP descriptor URL is accessible from SP box like...

wget "YOUR_IDP_DESCRIPTOR_URL";

来源：https://stackoverflow.com/questions/37229219/sso-with-signing-and-signature-validation-doesnt-work