WSO2 Identity Server OAuth2承载SAML断言

Question

我在使用WSO2身份服务器时遇到了一个问题。

我有一个使用SAML2的Web服务器在身份服务器中进行SSO。登录后，身份服务器返回saml响应消息：

<?xml version="1.0" encoding="UTF-8"?>
<saml2p:Response Destination="http://localhost:8080/travelocity.com/home.jsp" ID="lfkelagpefmnohdlcalkpoeobnahpjapkfljnoah" InResponseTo="mieoddeiiebbaphejlfdgaiojbnogmpnnhijaema" IssueInstant="2016-01-02T17:31:47.863Z" Version="2.0" xmlns:saml2p="urn:oasis:names:tc:SAML:2.0:protocol"><saml2:Issuer Format="urn:oasis:names:tc:SAML:2.0:nameid-format:entity" xmlns:saml2="urn:oasis:names:tc:SAML:2.0:assertion">localhost</saml2:Issuer><ds:Signature xmlns:ds="http://www.w3.org/2000/09/xmldsig#"><ds:SignedInfo><ds:CanonicalizationMethod Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#"/><ds:SignatureMethod Algorithm="http://www.w3.org/2000/09/xmldsig#rsa-sha1"/><ds:Reference URI="#lfkelagpefmnohdlcalkpoeobnahpjapkfljnoah"><ds:Transforms><ds:Transform Algorithm="http://www.w3.org/2000/09/xmldsig#enveloped-signature"/><ds:Transform Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#"/></ds:Transforms><ds:DigestMethod Algorithm="http://www.w3.org/2000/09/xmldsig#sha1"/><ds:DigestValue>HCnAalpftzdBW6dZbB+0nJf2A7c=</ds:DigestValue></ds:Reference></ds:SignedInfo><ds:SignatureValue>QKXtIMRFkw/eqAX1b30PGbCHqPTYrlOEGl0UobvK/hqaYz+2wuoJfMz9t0BS5CFYUT/OqAsv9eR2IVTDUq+Wp17xOu48yAPI9gl9L1gH9YZ4+k12y19C3WbAgTwaZ+IOqa9a01N5nWAKa3G38rhX58KAX31FgILvFT6aegQYXMU=</ds:SignatureValue><ds:KeyInfo><ds:X509Data><ds:X509Certificate>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</ds:X509Certificate></ds:X509Data></ds:KeyInfo></ds:Signature><saml2p:Status><saml2p:StatusCode Value="urn:oasis:names:tc:SAML:2.0:status:Success"/></saml2p:Status><saml2:Assertion ID="jajekgbkamaadloajjnhckhdofjdiicgkcfbjbmd" IssueInstant="2016-01-02T17:31:47.863Z" Version="2.0" xmlns:saml2="urn:oasis:names:tc:SAML:2.0:assertion"><saml2:Issuer Format="urn:oasis:names:tc:SAML:2.0:nameid-format:entity">localhost</saml2:Issuer><ds:Signature xmlns:ds="http://www.w3.org/2000/09/xmldsig#"><ds:SignedInfo><ds:CanonicalizationMethod Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#"/><ds:SignatureMethod Algorithm="http://www.w3.org/2000/09/xmldsig#rsa-sha1"/><ds:Reference URI="#jajekgbkamaadloajjnhckhdofjdiicgkcfbjbmd"><ds:Transforms><ds:Transform Algorithm="http://www.w3.org/2000/09/xmldsig#enveloped-signature"/><ds:Transform Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#"/></ds:Transforms><ds:DigestMethod Algorithm="http://www.w3.org/2000/09/xmldsig#sha1"/><ds:DigestValue>pDzChf9Ote3Ljws9ErogUQxfN0I=</ds:DigestValue></ds:Reference></ds:SignedInfo><ds:SignatureValue>ZFw9zwyuB2xJuChBdkQArV+yb2NW0LcTkoZK+GuhTRqoD/Ndk880U18cRT4am/Ut1qxIR90ec9pqosCd9ax/UZzu/ZZ69mNfn0xB6Uni/1MQ9G+FijjmuTHPWK2jyO1PrkbK7OUNTD1UgQxQGaMufbuWR2BsNFWnRbLBB5PG8e0=</ds:SignatureValue><ds:KeyInfo><ds:X509Data><ds:X509Certificate>MIICNTCCAZ6gAwIBAgIES343gjANBgkqhkiG9w0BAQUFADBVMQswCQYDVQQGEwJVUzELMAkGA1UECAwCQ0ExFjAUBgNVBAcMDU1vdW50YWluIFZpZXcxDTALBgNVBAoMBFdTTzIxEjAQBgNVBAMMCWxvY2FsaG9zdDAeFw0xMDAyMTkwNzAyMjZaFw0zNTAyMTMwNzAyMjZaMFUxCzAJBgNVBAYTAlVTMQswCQYDVQQIDAJDQTEWMBQGA1UEBwwNTW91bnRhaW4gVmlldzENMAsGA1UECgwEV1NPMjESMBAGA1UEAwwJbG9jYWxob3N0MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCUp/oV1vWc8/TkQSiAvTousMzOM4asB2iltr2QKozni5aVFu818MpOLZIr8LMnTzWllJvvaA5RAAdpbECb+48FjbBe0hseUdN5HpwvnH/DW8ZccGvk53I6Orq7hLCv1ZHtuOCokghz/ATrhyPq+QktMfXnRS4HrKGJTzxaCcU7OQIDAQABoxIwEDAOBgNVHQ8BAf8EBAMCBPAwDQYJKoZIhvcNAQEFBQADgYEAW5wPR7cr1LAdq+IrR44iQlRG5ITCZXY9hI0PygLP2rHANh+PYfTmxbuOnykNGyhM6FjFLbW2uZHQTY1jMrPprjOrmyK5sjJRO4d1DeGHT/YnIjs9JogRKv4XHECwLtIVdAbIdWHEtVZJyMSktcyysFcvuhPQK8Qc/E/Wq8uHSCo=</ds:X509Certificate></ds:X509Data></ds:KeyInfo></ds:Signature><saml2:Subject><saml2:NameID Format="urn:oasis:names:tc:SAML:1.1:nameid-format:emailAddress">[e-mail]</saml2:NameID><saml2:SubjectConfirmation Method="urn:oasis:names:tc:SAML:2.0:cm:bearer"><saml2:SubjectConfirmationData InResponseTo="mieoddeiiebbaphejlfdgaiojbnogmpnnhijaema" NotOnOrAfter="2016-01-02T17:36:47.863Z" Recipient="http://localhost:8080/travelocity.com/home.jsp"/></saml2:SubjectConfirmation><saml2:SubjectConfirmation Method="urn:oasis:names:tc:SAML:2.0:cm:bearer"><saml2:SubjectConfirmationData InResponseTo="mieoddeiiebbaphejlfdgaiojbnogmpnnhijaema" NotOnOrAfter="2016-01-02T17:36:47.863Z" Recipient="https://localhost:9443/oauth2/token"/></saml2:SubjectConfirmation></saml2:Subject><saml2:Conditions NotBefore="2016-01-02T17:31:47.863Z" NotOnOrAfter="2016-01-02T17:36:47.863Z"><saml2:AudienceRestriction><saml2:Audience>travelocity.com</saml2:Audience><saml2:Audience>https://localhost:9443/oauth2/token</saml2:Audience></saml2:AudienceRestriction></saml2:Conditions><saml2:AuthnStatement AuthnInstant="2016-01-02T17:31:47.864Z" SessionIndex="fed8981e-65b5-4a07-b7b0-b5b2dfcd1c35"><saml2:AuthnContext><saml2:AuthnContextClassRef>urn:oasis:names:tc:SAML:2.0:ac:classes:Password</saml2:AuthnContextClassRef></saml2:AuthnContext></saml2:AuthnStatement></saml2:Assertion></saml2p:Response>

我从SAML2响应中提取Assertion标签并使用base 64对其进行编码，并将请求发送到标识服务器，以使用OAuth2 SAML Aseertion请求OAuth2承载令牌。但是我在服务器中收到了以下异常消息：

[2016-01-02 12:33:34,938] ERROR     {org.wso2.carbon.identity.oauth2.token.handlers.grant.saml.SAML2BearerGrantHandler} -  Error while validating the signature.
org.opensaml.xml.validation.ValidationException: Signature did not validate against the credential's key
    at org.opensaml.xml.signature.SignatureValidator.validate(SignatureValidator.java:78)
    at org.wso2.carbon.identity.oauth2.token.handlers.grant.saml.SAML2BearerGrantHandler.validateGrant(SAML2BearerGrantHandler.java:451)
    at org.wso2.carbon.identity.oauth2.token.AccessTokenIssuer.issue(AccessTokenIssuer.java:154)
    at org.wso2.carbon.identity.oauth2.OAuth2Service.issueAccessToken(OAuth2Service.java:196)
    at org.wso2.carbon.identity.oauth.endpoint.token.OAuth2TokenEndpoint.getAccessToken(OAuth2TokenEndpoint.java:245)
    at org.wso2.carbon.identity.oauth.endpoint.token.OAuth2TokenEndpoint.issueAccessToken(OAuth2TokenEndpoint.java:111)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:606)
    at org.apache.cxf.service.invoker.AbstractInvoker.performInvocation(AbstractInvoker.java:188)
    at org.apache.cxf.service.invoker.AbstractInvoker.invoke(AbstractInvoker.java:104)
    at org.apache.cxf.jaxrs.JAXRSInvoker.invoke(JAXRSInvoker.java:204)
    at org.apache.cxf.jaxrs.JAXRSInvoker.invoke(JAXRSInvoker.java:101)
    at org.apache.cxf.interceptor.ServiceInvokerInterceptor$1.run(ServiceInvokerInterceptor.java:58)
    at org.apache.cxf.interceptor.ServiceInvokerInterceptor.handleMessage(ServiceInvokerInterceptor.java:94)
    at org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:272)
    at org.apache.cxf.transport.ChainInitiationObserver.onMessage(ChainInitiationObserver.java:121)
    at org.apache.cxf.transport.http.AbstractHTTPDestination.invoke(AbstractHTTPDestination.java:249)
    at org.apache.cxf.transport.servlet.ServletController.invokeDestination(ServletController.java:248)
    at org.apache.cxf.transport.servlet.ServletController.invoke(ServletController.java:222)
    at org.apache.cxf.transport.servlet.ServletController.invoke(ServletController.java:153)
    at org.apache.cxf.transport.servlet.CXFNonSpringServlet.invoke(CXFNonSpringServlet.java:171)
    at org.apache.cxf.transport.servlet.AbstractHTTPServlet.handleRequest(AbstractHTTPServlet.java:289)
    at org.apache.cxf.transport.servlet.AbstractHTTPServlet.doPost(AbstractHTTPServlet.java:209)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:646)
    at org.apache.cxf.transport.servlet.AbstractHTTPServlet.service(AbstractHTTPServlet.java:265)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
    at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
    at org.wso2.carbon.ui.filters.CSRFPreventionFilter.doFilter(CSRFPreventionFilter.java:88)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
    at org.wso2.carbon.ui.filters.CRLFPreventionFilter.doFilter(CRLFPreventionFilter.java:59)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:504)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:170)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
    at org.wso2.carbon.tomcat.ext.valves.CompositeValve.continueInvocation(CompositeValve.java:99)
    at org.wso2.carbon.tomcat.ext.valves.CarbonTomcatValve$1.invoke(CarbonTomcatValve.java:47)
    at org.wso2.carbon.webapp.mgt.TenantLazyLoaderValve.invoke(TenantLazyLoaderValve.java:57)
    at org.wso2.carbon.tomcat.ext.valves.TomcatValveContainer.invokeValves(TomcatValveContainer.java:47)
    at org.wso2.carbon.tomcat.ext.valves.CompositeValve.invoke(CompositeValve.java:62)
    at org.wso2.carbon.tomcat.ext.valves.CarbonStuckThreadDetectionValve.invoke(CarbonStuckThreadDetectionValve.java:159)
    at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950)
    at org.wso2.carbon.tomcat.ext.valves.CarbonContextCreatorValve.invoke(CarbonContextCreatorValve.java:57)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:421)
    at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1074)
    at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:611)
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1739)
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1698)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
    at java.lang.Thread.run(Thread.java:745)

我只在Identity Server中设置SAML2服务提供程序，并使用默认的常驻身份提供程序作为Identity Server中的身份提供程序。

我是在OAuth2 SAML断言流中做错了什么，还是在服务器中缺少了一些配置<非常感谢你。

Answer 1

您需要从SAML2响应中提取断言标记，并将其转换为base64 URL编码。请按照以下步骤操作。

1. 您需要删除换行符
2. URL编码
3. 将base 64编码为客户端ID和客户端机密

（注意：您可以直接将其转换为base 64 URL encode，无需使用两步执行此操作）

然后使用下面的curl命令

curl -k -d "grant_type=urn:ietf:params:oauth:grant-type:saml2-bearer&assertion=<Assertion_provided_by_client>&scope=PRODUCTION" -H "Authorization: Basic <Base64 encoded consumer key:consumer secret>, Content-Type: application/x-www-form-urlencoded" https://<IP of the APIM server>:9443/oauth2/token

当断言签名私钥的公钥和验证公钥不匹配时，会发生此错误。因此，在这种情况下，API管理器端用于验证发送SAML断言的公钥与Identity Server用于签署SAML断言的私钥不匹配。

另一个选项是将他们提供给您的证书添加到wso2carbon。jks（记住别名）。

请参阅下面的参考资料以获取更多信息。

[1] https://docs.wso2.com/display/AM190/Exchanging具有OAuth2-SAML扩展授权类型的SAML2承载令牌

[2]https://docs.wso2.com/display/IS510/SAML2承载断言配置文件的OAuth 2.0与WSO2 TraSpeed

[3]http://xacmlinfo.org/2014/10/31/saml2-bearer-assertion-profile-for-oauth-2-0/