使用 OpenSAML v3 从 IDP 元数据创建凭证对象

Question

我正在尝试验证从 SSO Sircle (IDP) 返回的 SAML 响应。为此，我使用 SSO 圈子 (https://idp.ssocircle.com/idp-meta.xml) 提供的 IDP 元数据来使用 IDP public 密钥创建凭证对象，如下所示：

    FilesystemMetadataResolver idpMetadataResolver = new  FilesystemMetadataResolver(new File("C:\idp_metadata.xml"));
    idpMetadataResolver.setRequireValidMetadata(true);
    idpMetadataResolver.setParserPool(new BasicParserPool());
    idpMetadataResolver.initialize();

    MetadataCredentialResolver credentialResolver = new MetadataCredentialResolver();

    credentialResolver.setRoleDescriptorResolver(new BasicRoleDescriptorResolver(idpMetadataResolver));

    CriteriaSet criteriaSet = new CriteriaSet();
    criteriaSet.add(new EntityIdCriterion("https://idp.ssocircle.com"));
    criteriaSet.add(new EntityRoleCriterion(IDPSSODescriptor.DEFAULT_ELEMENT_NAME));

    X509Credential credential = (X509Credential)credentialResolver.resolveSingle(criteriaSet);

但是，这会在尝试初始化 idpMetadataResolver 时引发异常：

net.shibboleth.utilities.java.support.component.ComponentInitializationException: Component identifier can not be null
at net.shibboleth.utilities.java.support.component.AbstractIdentifiedInitializableComponent.doInitialize(AbstractIdentifiedInitializableComponent.java:65)
at org.opensaml.saml.metadata.resolver.impl.AbstractMetadataResolver.doInitialize(AbstractMetadataResolver.java:188)
at net.shibboleth.utilities.java.support.component.AbstractInitializableComponent.initialize(AbstractInitializableComponent.java:61)

我是 OpenSAML 的新手，我主要是在网上查看示例和教程，但其中大部分都是为 OpenSAML v2.0 编写的。我想知道在初始化对象时我是否做错了什么。

Answer 1

在深入了解 OpenSAML 3 Java 文档和 Shibboleth 开发社区之后，我想我找到了问题的答案。元数据解析器对象需要设置如下：

    FilesystemMetadataResolver idpMetadataResolver = new FilesystemMetadataResolver(new File("C:\idp.xml"));
    idpMetadataResolver.setRequireValidMetadata(true);
    idpMetadataResolver.setParserPool(XMLObjectProviderRegistrySupport.getParserPool());
    idpMetadataResolver.setId("someidentifier");
    idpMetadataResolver.initialize();

使用 OpenSAML v3 从 IDP 元数据创建凭证对象

Creating credential object from IDP Metadata with OpenSAML v3

saml

single-sign-on

opensaml

saml-2.0