我试图通过签署响应而不是断言来实现 SAML 2.0。我有 3 个现有供应商在断言级别接受我的签名，但是新供应商正在协议/响应级别请求它。我已经在谷歌上搜索和调试了大约 8 个小时，但找不到一个有效的例子来说明我做错了什么。我下面的代码清楚地显示了我在做什么，最后 10 行左右是我实现的差异（在 if / else 中）。另外，我注意到在我的 XML 中我的 SignatureValue 和 DigestValue 都是空的。谁能指出我一些清晰的文档，或者更好的是，使用 openSAML 的工作响应签名的示例？在这一点上，任何帮助表示赞赏。
Assertion assertion = OpenSamlHelper.CreateSamlAssertion(
issuer.trim(), recipient.trim(), domain.trim(), subject.trim(),
attributes);
//
// Sign
//
Credential signingCredential = getSigningCredential(keystore, storetype, storepass, alias, keypass);
Signature signature = (Signature) Configuration.getBuilderFactory()
.getBuilder(Signature.DEFAULT_ELEMENT_NAME)
.buildObject(Signature.DEFAULT_ELEMENT_NAME);
signature.setSigningCredential(signingCredential);
signature.setSignatureAlgorithm(SignatureConstants.ALGO_ID_SIGNATURE_RSA_SHA1);
signature.setCanonicalizationAlgorithm(SignatureConstants.ALGO_ID_C14N_EXCL_OMIT_COMMENTS);
SecurityConfiguration secConfiguration = Configuration.getGlobalSecurityConfiguration();
NamedKeyInfoGeneratorManager namedKeyInfoGeneratorManager = secConfiguration.getKeyInfoGeneratorManager();
KeyInfoGeneratorManager keyInfoGeneratorManager = namedKeyInfoGeneratorManager.getDefaultManager();
KeyInfoGeneratorFactory keyInfoGeneratorFactory = keyInfoGeneratorManager.getFactory(signingCredential);
KeyInfoGenerator keyInfoGenerator = keyInfoGeneratorFactory.newInstance();
KeyInfo keyInfo = null;
try {
keyInfo = keyInfoGenerator.generate(signingCredential);
} catch (Exception e) {
logger.error(e);
}
signature.setKeyInfo(keyInfo);
String saml = "";
try {
MarshallerFactory marshallerFactory = Configuration.getMarshallerFactory();
if (signatureType == SignatureType.Response) {
response.setSignature(signature);
marshallerFactory.getMarshaller(response).marshall(response);
}
if (signatureType == SignatureType.Assertion) {
assertion.setSignature(signature);
marshallerFactory.getMarshaller(assertion).marshall(assertion);
}
Signer.signObject(signature);
UPDATE: The XML I was getting with the above code did not include a signatureValue or Digest Value, like below..
<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="#_651cc837-e890-46c7-9cf9-646ffd38aaad">
<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#">
<ec:InclusiveNamespaces xmlns:ec="http://www.w3.org/2001/10/xml-exc-c14n#" PrefixList="xs"/>
</ds:Transform>
</ds:Transforms>
<ds:DigestMethod Algorithm="http://www.w3.org/2000/09/xmldsig#sha1"/>
<ds:DigestValue/>
</ds:Reference>
</ds:SignedInfo>
<ds:SignatureValue/>
After moving the Signer.signObject(signature); to a point after the assertion was attached to the response, I receive the following XML..
<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="#_273e38e9-3b51-4845-8b8b-f0970e3e9bab">
<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#">
<ec:InclusiveNamespaces xmlns:ec="http://www.w3.org/2001/10/xml-exc-c14n#" PrefixList="xs"/>
</ds:Transform>
</ds:Transforms>
<ds:DigestMethod Algorithm="http://www.w3.org/2000/09/xmldsig#sha1"/>
<ds:DigestValue>UlVtsjSAvtjOLMbw+HUX9n7FtxM=</ds:DigestValue>
</ds:Reference>
</ds:SignedInfo>
<ds:SignatureValue>
jM7GxZ77VBHuAatMXLx14s0ExOmmfDpBhCpF8OKV4F3C1BiRutM41aTH25yhgSn+6l4TkK6kEDbFOYI6isvJUhtdVgH4E1xJl0DFfvPJphTF096acvJrLPehpsFd2Ab6sARuV1sbg/gwNFzvlHJWgit5NxHNuFN1qcv3vuhvQ83fOfxxuyLyJrEjpqvbRzwWepHiuTVHlNObrUvjVxEc7AUKPtwTqGlA6y3SdzIDwjN/LsB1V6PWhiMZsbxJx3LUuk5UECOYmRhKQifZWdOdvHoWBq05J54I6RvAplNDTfRBr4AM+tfIz3OXpN6OpKdSC43HRg9LO9bXprui+4CvrQ==
</ds:SignatureValue>