我是服务提供者，从 IDP 接收 SAML 断言签名。我在 Tomcat 之上使用 JOSSO 来使用断言。这里的问题是我无法验证断言签名。
IDP 证书使用别名“IDP”上传到我的密钥库。
验证签名时，出现以下错误：
2012-12-19 14:09:38,697 | ERROR | P/SAML2/ACS/POST | AbstractCamelProducer | tion.camel.AbstractCamelProducer 146 | 170 - org.atricore.idbus.kernel.main - 1.3.0 | urn:oasis:names:tc:SAML:2.0:status:Requester:urn:oasis:names:tc:SAML:2.0:status:RequestDenied:urn:org:atricore:idbus:samlr2:status:**InvalidResponseSignature:null**:
org.atricore.idbus.capabilities.sso.support.core.SSOResponseException: urn:oasis:names:tc:SAML:2.0:status:Requester:urn:oasis:names:tc:SAML:2.0:status:RequestDenied:urn:org:atricore:idbus:samlr2:status:InvalidResponseSignature:null:
at org.atricore.idbus.capabilities.sso.main.sp.producers.AssertionConsumerProducer.validateResponse(AssertionConsumerProducer.java:943)
at org.atricore.idbus.capabilities.sso.main.sp.producers.AssertionConsumerProducer.doProcess(AssertionConsumerProducer.java:139)
at org.atricore.idbus.capabilities.sso.main.sp.producers.AssertionConsumerProducer.doProcess(AssertionConsumerProducer.java:85)
at org.atricore.idbus.kernel.main.mediation.camel.AbstractCamelProducer.process(AbstractCamelProducer.java:133)[170:org.atricore.idbus.kernel.main:1.3.0]
at org.apache.camel.impl.converter.AsyncProcessorTypeConverter$ProcessorToAsyncProcessorBridge.process(AsyncProcessorTypeConverter.java:43)[148:org.apache.camel.camel-core:1.6.1]
为什么 JOSSO 无法检测到密钥库中的证书并验证签名？我需要以不同的方式定义别名吗？