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Add EncryptedAttribute support

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Closes gh-9131
This commit is contained in:
Josh Cummings 2020-10-02 15:41:53 -06:00
parent d0581c9a26
commit c8cbf06d8d
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3 changed files with 54 additions and 0 deletions
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12
saml2/saml2-service-provider/src/main/java/org/springframework/security/saml2/provider/service/authentication/OpenSamlAuthenticationProvider.java
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@ -69,6 +69,7 @@ import org.opensaml.saml.saml2.core.Attribute;
import org.opensaml.saml.saml2.core.AttributeStatement;
import org.opensaml.saml.saml2.core.Condition;
import org.opensaml.saml.saml2.core.EncryptedAssertion;
import org.opensaml.saml.saml2.core.EncryptedAttribute;
import org.opensaml.saml.saml2.core.NameID;
import org.opensaml.saml.saml2.core.OneTimeUse;
import org.opensaml.saml.saml2.core.Response;
@ -647,6 +648,17 @@ public final class OpenSamlAuthenticationProvider implements AuthenticationProvi
return (assertionToken) -> {
Decrypter decrypter = this.decrypterConverter.convert(assertionToken.getToken());
Assertion assertion = assertionToken.getAssertion();
for (AttributeStatement statement : assertion.getAttributeStatements()) {
for (EncryptedAttribute encryptedAttribute : statement.getEncryptedAttributes()) {
try {
Attribute attribute = decrypter.decrypt(encryptedAttribute);
statement.getAttributes().add(attribute);
}
catch (Exception ex) {
throw createAuthenticationException(Saml2ErrorCodes.DECRYPTION_ERROR, ex.getMessage(), ex);
}
}
}
if (assertion.getSubject() == null) {
return;
}

20
saml2/saml2-service-provider/src/test/java/org/springframework/security/saml2/provider/service/authentication/OpenSamlAuthenticationProviderTests.java
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@ -43,6 +43,7 @@ import org.opensaml.saml.saml2.assertion.SAML2AssertionValidationParameters;
import org.opensaml.saml.saml2.core.Assertion;
import org.opensaml.saml.saml2.core.AttributeStatement;
import org.opensaml.saml.saml2.core.EncryptedAssertion;
import org.opensaml.saml.saml2.core.EncryptedAttribute;
import org.opensaml.saml.saml2.core.EncryptedID;
import org.opensaml.saml.saml2.core.NameID;
import org.opensaml.saml.saml2.core.OneTimeUse;
@ -298,6 +299,25 @@ public class OpenSamlAuthenticationProviderTests {
this.provider.authenticate(token);
}
@Test
public void authenticateWhenEncryptedAttributeThenDecrypts() {
Response response = TestOpenSamlObjects.response();
Assertion assertion = TestOpenSamlObjects.assertion();
EncryptedAttribute attribute = TestOpenSamlObjects.encrypted("name", "value",
TestSaml2X509Credentials.assertingPartyEncryptingCredential());
AttributeStatement statement = build(AttributeStatement.DEFAULT_ELEMENT_NAME);
statement.getEncryptedAttributes().add(attribute);
assertion.getAttributeStatements().add(statement);
response.getAssertions().add(assertion);
TestOpenSamlObjects.signed(response, TestSaml2X509Credentials.assertingPartySigningCredential(),
RELYING_PARTY_ENTITY_ID);
Saml2AuthenticationToken token = token(response, TestSaml2X509Credentials.relyingPartyVerifyingCredential(),
TestSaml2X509Credentials.relyingPartyDecryptingCredential());
Saml2Authentication authentication = (Saml2Authentication) this.provider.authenticate(token);
Saml2AuthenticatedPrincipal principal = (Saml2AuthenticatedPrincipal) authentication.getPrincipal();
assertThat(principal.getAttribute("name")).containsExactly("value");
}
@Test
public void authenticateWhenDecryptionKeysAreMissingThenThrowAuthenticationException() throws Exception {
Response response = TestOpenSamlObjects.response();

22
saml2/saml2-service-provider/src/test/java/org/springframework/security/saml2/provider/service/authentication/TestOpenSamlObjects.java
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@ -59,6 +59,7 @@ import org.opensaml.saml.saml2.core.AttributeValue;
import org.opensaml.saml.saml2.core.AuthnRequest;
import org.opensaml.saml.saml2.core.Conditions;
import org.opensaml.saml.saml2.core.EncryptedAssertion;
import org.opensaml.saml.saml2.core.EncryptedAttribute;
import org.opensaml.saml.saml2.core.EncryptedID;
import org.opensaml.saml.saml2.core.Issuer;
import org.opensaml.saml.saml2.core.NameID;
@ -301,6 +302,18 @@ public final class TestOpenSamlObjects {
}
}
static EncryptedAttribute encrypted(String name, String value, Saml2X509Credential credential) {
Attribute attribute = attribute(name, value);
X509Certificate certificate = credential.getCertificate();
Encrypter encrypter = getEncrypter(certificate);
try {
return encrypter.encrypt(attribute);
}
catch (EncryptionException ex) {
throw new Saml2Exception("Unable to encrypt nameID.", ex);
}
}
private static Encrypter getEncrypter(X509Certificate certificate) {
String dataAlgorithm = XMLCipherParameters.AES_256;
String keyAlgorithm = XMLCipherParameters.RSA_1_5;
@ -318,6 +331,15 @@ public final class TestOpenSamlObjects {
return encrypter;
}
static Attribute attribute(String name, String value) {
Attribute attribute = build(Attribute.DEFAULT_ELEMENT_NAME);
attribute.setName(name);
XSString xsValue = new XSStringBuilder().buildObject(AttributeValue.DEFAULT_ELEMENT_NAME, XSString.TYPE_NAME);
xsValue.setValue(value);
attribute.getAttributeValues().add(xsValue);
return attribute;
}
static List<AttributeStatement> attributeStatements() {
List<AttributeStatement> attributeStatements = new ArrayList<>();
AttributeStatementBuilder attributeStatementBuilder = new AttributeStatementBuilder();