配置 Spring 安全 SAML 以使用 SHA-256 作为安全哈希算法

Question

我正在研究 Spring SAML 和 Microsoft ADFS 3.0 之间的集成。即使它已经在 the documentation of Spring SAML 中声明为：

Open the provider by double-clicking it, select tab Advanced and change "Secure hash algorithm" to SHA-1

据我所知，Spring SAML 目前仅支持 SHA-1 作为哈希算法，但我的要求是使用 SHA-256。如果我尝试仅在 ADFS 中为 SHA-256 配置，它不起作用。我想我必须用 Spring SAML 做点什么。你知道怎么做吗？

Answer 1

您应该配置 Spring 安全配置以使用 SHA-256 签名算法。

您可以覆盖 SAMLBootstrap 或像这样配置 initializing bean：

Spring 配置:

<bean id="samlProperties" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
    <property name="location" value="classpath:saml.properties" />
</bean>
<bean class="your.package.SAMLConfigurationBean">
    <property name="signatureAlgorithm" value="${saml.signatureAlgorithm:SHA1}" />
</bean>

属性文件 (saml.properties):

saml.signatureAlgorithm=SHA256

正在初始化 bean:

package your.package;

import org.opensaml.Configuration;
import org.opensaml.xml.security.BasicSecurityConfiguration;
import org.opensaml.xml.signature.SignatureConstants;
import org.springframework.beans.factory.InitializingBean;

public class SAMLConfigurationBean implements InitializingBean {

    private String signatureAlgorithm ;
    private String digestAlgorithm;

    public void setSignatureAlgorithm(String algorithm) {
        switch (algorithm) {
            case "SHA256" :
                signatureAlgorithm = SignatureConstants.ALGO_ID_SIGNATURE_RSA_SHA256;
                digestAlgorithm = SignatureConstants.ALGO_ID_DIGEST_SHA256;
                break;
            case "SHA512" :
                signatureAlgorithm = SignatureConstants.ALGO_ID_SIGNATURE_RSA_SHA512;
                digestAlgorithm = SignatureConstants.ALGO_ID_DIGEST_SHA512;
                break;
            default:
                signatureAlgorithm = SignatureConstants.ALGO_ID_SIGNATURE_RSA_SHA1;
                digestAlgorithm = SignatureConstants.ALGO_ID_DIGEST_SHA1;
        }
    }

    @Override
    public void afterPropertiesSet() throws Exception {
        BasicSecurityConfiguration config = (BasicSecurityConfiguration) Configuration.getGlobalSecurityConfiguration();
        config.registerSignatureAlgorithmURI("RSA", signatureAlgorithm);
        config.setSignatureReferenceDigestMethod(digestAlgorithm);
    }
}

您也可以跳过可配置部分，只满足于此：

正在初始化 bean:

package your.package;

import org.opensaml.Configuration;
import org.opensaml.xml.security.BasicSecurityConfiguration;
import org.opensaml.xml.signature.SignatureConstants;
import org.springframework.beans.factory.InitializingBean;

public class SAMLConfigurationBean implements InitializingBean {

    @Override
    public void afterPropertiesSet() throws Exception {
        BasicSecurityConfiguration config = (BasicSecurityConfiguration) Configuration.getGlobalSecurityConfiguration();
        config.registerSignatureAlgorithmURI("RSA", SignatureConstants.ALGO_ID_SIGNATURE_RSA_SHA256);
        config.setSignatureReferenceDigestMethod(SignatureConstants.ALGO_ID_DIGEST_SHA256);
    }
}

Answer 2

我建议参考这个 GitHub 示例项目：https://github.com/choonchernlim/spring-security-adfs-saml2

其中提供了 ADFS 专用配置信息以及如何启用 SHA-256 签名的详细信息。

配置 Spring 安全 SAML 以使用 SHA-256 作为安全哈希算法

Configure Spring Security SAML to use SHA-256 as secure hash algorithm

spring-security

spring-saml