3081298 - "HTTP ERROR 500 javax.servlet.ServletException: org.opensaml.ws.message.encoder.MessageEncodingException: Unable to sign URL query string" when creating Live Data Connection to Universe using SAML SSO Authentication in SAP Analytics Cloud (SAC)

• Live Data Connection to Universe using Password Authentication is succesfully established
• However, Live Data Connection to Universe using SAML Authentication fails with the following error:
• GetServerInfo URL (https://<HOST>:<PORT>/sap/boc/ina/GetServerInfo ) also fails when SAML Authentication is configured

HTTP ERROR 500 javax.servlet.ServletException: org.opensaml.ws.message.encoder.MessageEncodingException: Unable to sign URL query string

URI: /sap/boc/ina/cors/auth.html
STATUS: 500
MESSAGE: javax.servlet.ServletException: org.opensaml.ws.message.encoder.MessageEncodingException: Unable to sign URL query string
SERVLET: LDC SAML Auth.html
CAUSED BY: javax.servlet.ServletException: org.opensaml.ws.message.encoder.MessageEncodingException: Unable to sign URL query string
CAUSED BY: org.opensaml.ws.message.encoder.MessageEncodingException: Unable to sign URL query string
CAUSED BY: org.opensaml.xml.security.SecurityException: Error during signature generation
CAUSED BY: java.security.InvalidKeyException: The security strength of SHA-1 digest algorithm is not sufficient for this key size

Caused by:

javax.servlet.ServletException: org.opensaml.ws.message.encoder.MessageEncodingException: Unable to sign URL query string
at org.springframework.security.saml.SAMLEntryPoint.commence(SAMLEntryPoint.java:163)
at org.springframework.security.web.access.ExceptionTranslationFilter.sendStartAuthentication(ExceptionTranslationFilter.java:203)
at org.springframework.security.web.access.ExceptionTranslationFilter.handleSpringSecurityException(ExceptionTranslationFilter.java:177)
at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:133)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:137)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:111)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:170)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:63)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:208)
at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:185)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
at org.springframework.security.web.header.HeaderWriterFilter.doFilterInternal(HeaderWriterFilter.java:66)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
at org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:56)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:105)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
at org.springframework.security.saml.metadata.MetadataGeneratorFilter.doFilter(MetadataGeneratorFilter.java:87)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:214)
at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:177)
at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:347)
at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:263)
at org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:193)
at org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1601)
at com.sap.csina.cloud.servlet.InA_LogFilter.doFilter(InA_LogFilter.java:66)
at org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:193)
at org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1601)
at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:548)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143)
at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:602)
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127)
at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:235)
at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1612)
at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:233)
at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1434)
at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:188)
at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:501)
at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1582)
at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:186)
at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1349)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:234)
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127)
at org.eclipse.jetty.server.Server.handle(Server.java:516)
at org.eclipse.jetty.server.HttpChannel.lambda$handle$1(HttpChannel.java:383)
at org.eclipse.jetty.server.HttpChannel.dispatch(HttpChannel.java:556)
at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:375)
at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:273)
at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:311)
at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:105)
at org.eclipse.jetty.io.ssl.SslConnection$DecryptedEndPoint.onFillable(SslConnection.java:540)
at org.eclipse.jetty.io.ssl.SslConnection.onFillable(SslConnection.java:395)
at org.eclipse.jetty.io.ssl.SslConnection$2.succeeded(SslConnection.java:161)
at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:105)
at org.eclipse.jetty.io.ChannelEndPoint$1.run(ChannelEndPoint.java:104)
at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.runTask(EatWhatYouKill.java:336)
at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:313)
at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.tryProduce(EatWhatYouKill.java:171)
at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.run(EatWhatYouKill.java:129)
at org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:375)
at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:773)
at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:905)
at java.lang.Thread.run(Thread.java:836)
Caused by: org.opensaml.ws.message.encoder.MessageEncodingException: Unable to sign URL query string
at org.opensaml.saml2.binding.encoding.HTTPRedirectDeflateEncoder.generateSignature(HTTPRedirectDeflateEncoder.java:254)
at org.opensaml.saml2.binding.encoding.HTTPRedirectDeflateEncoder.buildRedirectURL(HTTPRedirectDeflateEncoder.java:193)
at org.opensaml.saml2.binding.encoding.HTTPRedirectDeflateEncoder.doEncode(HTTPRedirectDeflateEncoder.java:104)
at org.opensaml.ws.message.encoder.BaseMessageEncoder.encode(BaseMessageEncoder.java:52)
at org.springframework.security.saml.processor.SAMLProcessorImpl.sendMessage(SAMLProcessorImpl.java:224)
at org.springframework.security.saml.processor.SAMLProcessorImpl.sendMessage(SAMLProcessorImpl.java:192)
at org.springframework.security.saml.websso.AbstractProfileBase.sendMessage(AbstractProfileBase.java:148)
at org.springframework.security.saml.websso.WebSSOProfileImpl.sendAuthenticationRequest(WebSSOProfileImpl.java:107)
at org.springframework.security.saml.SAMLEntryPoint.initializeSSO(SAMLEntryPoint.java:225)
at org.springframework.security.saml.SAMLEntryPoint.commence(SAMLEntryPoint.java:152)
... 70 more
Caused by: org.opensaml.xml.security.SecurityException: Error during signature generation
at org.opensaml.xml.security.SigningUtil.sign(SigningUtil.java:127)
at org.opensaml.xml.security.SigningUtil.sign(SigningUtil.java:94)
at org.opensaml.xml.security.SigningUtil.signWithURI(SigningUtil.java:65)
at org.opensaml.saml2.binding.encoding.HTTPRedirectDeflateEncoder.generateSignature(HTTPRedirectDeflateEncoder.java:248)
... 79 more

• SAP Analytics Cloud 2021
• LDC (Live Data Connection) to SAP Universe and WEBI Document version 3.x
• SAP BI Platform 4.2 / 4.3

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