HADOOP-10770. KMS add delegation token support. (tucu)

Conflicts:
	hadoop-common-project/hadoop-common/CHANGES.txt

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1619550 13f79535-47bb-0310-9956-ffa450edef68

hadoop-common-project/hadoop-common/CHANGES.txt

@@ -125,6 +125,8 @@ Release 2.6.0 - UNRELEASED
     HADOOP-10881. Clarify usage of encryption and encrypted encryption
     key in KeyProviderCryptoExtension. (wang)
 
+    HADOOP-10770. KMS add delegation token support. (tucu)
+
   OPTIMIZATIONS
 
     HADOOP-10838. Byte array native checksumming. (James Thomas via todd)

hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/crypto/key/KeyProviderDelegationTokenExtension.java

@@ -20,6 +20,8 @@ package org.apache.hadoop.crypto.key;
 import org.apache.hadoop.security.Credentials;
 import org.apache.hadoop.security.token.Token;
 
+import java.io.IOException;
+
 /**
  * A KeyProvider extension with the ability to add a renewer's Delegation
  * Tokens to the provided Credentials.
@@ -45,9 +47,10 @@ public class KeyProviderDelegationTokenExtension extends
      * @param renewer the user allowed to renew the delegation tokens
      * @param credentials cache in which to add new delegation tokens
      * @return list of new delegation tokens
+     * @throws IOException thrown if IOException if an IO error occurs.
      */
     public Token<?>[] addDelegationTokens(final String renewer,
-        Credentials credentials);
+        Credentials credentials) throws IOException;
   }
 
   /**
@@ -76,9 +79,10 @@ public class KeyProviderDelegationTokenExtension extends
    * @param renewer the user allowed to renew the delegation tokens
    * @param credentials cache in which to add new delegation tokens
    * @return list of new delegation tokens
+   * @throws IOException thrown if IOException if an IO error occurs.
    */
   public Token<?>[] addDelegationTokens(final String renewer,
-      Credentials credentials) {
+      Credentials credentials) throws IOException {
     return getExtension().addDelegationTokens(renewer, credentials);
   }
 

hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/crypto/key/kms/KMSClientProvider.java

@@ -22,15 +22,17 @@ import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.crypto.key.KeyProvider;
 import org.apache.hadoop.crypto.key.KeyProviderCryptoExtension.EncryptedKeyVersion;
+import org.apache.hadoop.crypto.key.KeyProviderDelegationTokenExtension;
 import org.apache.hadoop.crypto.key.KeyProviderFactory;
 import org.apache.hadoop.fs.CommonConfigurationKeysPublic;
 import org.apache.hadoop.fs.Path;
+import org.apache.hadoop.security.Credentials;
 import org.apache.hadoop.security.ProviderUtils;
-import org.apache.hadoop.security.authentication.client.AuthenticatedURL;
 import org.apache.hadoop.security.authentication.client.AuthenticationException;
 import org.apache.hadoop.security.authentication.client.ConnectionConfigurator;
-import org.apache.hadoop.security.authentication.client.PseudoAuthenticator;
 import org.apache.hadoop.security.ssl.SSLFactory;
+import org.apache.hadoop.security.token.Token;
+import org.apache.hadoop.security.token.delegation.web.DelegationTokenAuthenticatedURL;
 import org.apache.http.client.utils.URIBuilder;
 import org.codehaus.jackson.map.ObjectMapper;
 
@@ -69,7 +71,10 @@ import com.google.common.base.Preconditions;
  * KMS client <code>KeyProvider</code> implementation.
  */
 @InterfaceAudience.Private
-public class KMSClientProvider extends KeyProvider implements CryptoExtension {
+public class KMSClientProvider extends KeyProvider implements CryptoExtension,
+    KeyProviderDelegationTokenExtension.DelegationTokenExtension {
+
+  public static final String TOKEN_KIND = "kms-dt";
 
   public static final String SCHEME_NAME = "kms";
 
@@ -229,6 +234,7 @@ public class KMSClientProvider extends KeyProvider implements CryptoExtension {
   private String kmsUrl;
   private SSLFactory sslFactory;
   private ConnectionConfigurator configurator;
+  private DelegationTokenAuthenticatedURL.Token authToken;
 
   @Override
   public String toString() {
@@ -309,6 +315,7 @@ public class KMSClientProvider extends KeyProvider implements CryptoExtension {
                 CommonConfigurationKeysPublic.
                     KMS_CLIENT_ENC_KEY_CACHE_NUM_REFILL_THREADS_DEFAULT),
             new EncryptedQueueRefiller());
+    authToken = new DelegationTokenAuthenticatedURL.Token();
   }
 
   private String createServiceURL(URL url) throws IOException {
@@ -325,12 +332,14 @@ public class KMSClientProvider extends KeyProvider implements CryptoExtension {
     try {
       StringBuilder sb = new StringBuilder();
       sb.append(kmsUrl);
-      sb.append(collection);
-      if (resource != null) {
-        sb.append("/").append(URLEncoder.encode(resource, UTF8));
-      }
-      if (subResource != null) {
-        sb.append("/").append(subResource);
+      if (collection != null) {
+        sb.append(collection);
+        if (resource != null) {
+          sb.append("/").append(URLEncoder.encode(resource, UTF8));
+          if (subResource != null) {
+            sb.append("/").append(subResource);
+          }
+        }
       }
       URIBuilder uriBuilder = new URIBuilder(sb.toString());
       if (parameters != null) {
@@ -369,9 +378,9 @@ public class KMSClientProvider extends KeyProvider implements CryptoExtension {
       throws IOException {
     HttpURLConnection conn;
     try {
-      AuthenticatedURL authUrl = new AuthenticatedURL(new PseudoAuthenticator(),
-          configurator);
-      conn = authUrl.openConnection(url, new AuthenticatedURL.Token());
+      DelegationTokenAuthenticatedURL authUrl =
+          new DelegationTokenAuthenticatedURL(configurator);
+      conn = authUrl.openConnection(url, authToken);
     } catch (AuthenticationException ex) {
       throw new IOException(ex);
     }
@@ -729,4 +738,25 @@ public class KMSClientProvider extends KeyProvider implements CryptoExtension {
     }
   }
 
+  @Override
+  public Token<?>[] addDelegationTokens(String renewer,
+      Credentials credentials) throws IOException {
+    Token<?>[] tokens;
+    URL url = createURL(null, null, null, null);
+    DelegationTokenAuthenticatedURL authUrl =
+        new DelegationTokenAuthenticatedURL(configurator);
+    try {
+      Token<?> token = authUrl.getDelegationToken(url, authToken, renewer);
+      if (token != null) {
+        credentials.addToken(token.getService(), token);
+        tokens = new Token<?>[] { token };
+      } else {
+        throw new IOException("Got NULL as delegation token");
+      }
+    } catch (AuthenticationException ex) {
+      throw new IOException(ex);
+    }
+    return tokens;
+  }
+
 }

hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/security/token/delegation/web/DelegationTokenAuthenticationHandler.java

@@ -75,7 +75,7 @@ public abstract class DelegationTokenAuthenticationHandler
 
   public static final String PREFIX = "delegation-token.";
 
-  public static final String TOKEN_KIND = PREFIX + "token-kind.sec";
+  public static final String TOKEN_KIND = PREFIX + "token-kind";
 
   public static final String UPDATE_INTERVAL = PREFIX + "update-interval.sec";
   public static final long UPDATE_INTERVAL_DEFAULT = 24 * 60 * 60;

hadoop-common-project/hadoop-kms/src/main/java/org/apache/hadoop/crypto/key/kms/server/KMS.java

@@ -25,9 +25,10 @@ import org.apache.hadoop.crypto.key.KeyProviderCryptoExtension;
 import org.apache.hadoop.crypto.key.KeyProviderCryptoExtension.EncryptedKeyVersion;
 import org.apache.hadoop.crypto.key.kms.KMSRESTConstants;
 import org.apache.hadoop.security.AccessControlException;
-import org.apache.hadoop.security.authentication.client.AuthenticationException;
+import org.apache.hadoop.security.UserGroupInformation;
 import org.apache.hadoop.security.authorize.AuthorizationException;
 import org.apache.hadoop.crypto.key.kms.KMSClientProvider;
+import org.apache.hadoop.security.token.delegation.web.HttpUserGroupInformation;
 
 import javax.ws.rs.Consumes;
 import javax.ws.rs.DELETE;
@@ -38,15 +39,13 @@ import javax.ws.rs.Path;
 import javax.ws.rs.PathParam;
 import javax.ws.rs.Produces;
 import javax.ws.rs.QueryParam;
-import javax.ws.rs.core.Context;
 import javax.ws.rs.core.MediaType;
 import javax.ws.rs.core.Response;
-import javax.ws.rs.core.SecurityContext;
 
 import java.io.IOException;
 import java.net.URI;
 import java.net.URISyntaxException;
-import java.security.Principal;
+import java.security.PrivilegedExceptionAction;
 import java.util.ArrayList;
 import java.util.LinkedList;
 import java.util.List;
@@ -74,15 +73,6 @@ public class KMS {
     kmsAudit= KMSWebApp.getKMSAudit();
   }
 
-  private static Principal getPrincipal(SecurityContext securityContext)
-      throws AuthenticationException{
-    Principal user = securityContext.getUserPrincipal();
-    if (user == null) {
-      throw new AuthenticationException("User must be authenticated");
-    }
-    return user;
-  }
-
 
   private static final String UNAUTHORIZED_MSG_WITH_KEY =
       "User:%s not allowed to do '%s' on '%s'";
@@ -90,20 +80,21 @@ public class KMS {
   private static final String UNAUTHORIZED_MSG_WITHOUT_KEY =
       "User:%s not allowed to do '%s'";
 
-  private void assertAccess(KMSACLs.Type aclType, Principal principal,
+  private void assertAccess(KMSACLs.Type aclType, UserGroupInformation ugi,
       KMSOp operation) throws AccessControlException {
-    assertAccess(aclType, principal, operation, null);
+    assertAccess(aclType, ugi, operation, null);
   }
 
-  private void assertAccess(KMSACLs.Type aclType, Principal principal,
-      KMSOp operation, String key) throws AccessControlException {
-    if (!KMSWebApp.getACLs().hasAccess(aclType, principal.getName())) {
+  private void assertAccess(KMSACLs.Type aclType,
+      UserGroupInformation ugi, KMSOp operation, String key)
+      throws AccessControlException {
+    if (!KMSWebApp.getACLs().hasAccess(aclType, ugi)) {
       KMSWebApp.getUnauthorizedCallsMeter().mark();
-      kmsAudit.unauthorized(principal, operation, key);
+      kmsAudit.unauthorized(ugi, operation, key);
       throw new AuthorizationException(String.format(
           (key != null) ? UNAUTHORIZED_MSG_WITH_KEY
                         : UNAUTHORIZED_MSG_WITHOUT_KEY,
-          principal.getName(), operation, key));
+          ugi.getShortUserName(), operation, key));
     }
   }
 
@@ -123,15 +114,14 @@ public class KMS {
   @Consumes(MediaType.APPLICATION_JSON)
   @Produces(MediaType.APPLICATION_JSON)
   @SuppressWarnings("unchecked")
-  public Response createKey(@Context SecurityContext securityContext,
-      Map jsonKey) throws Exception {
+  public Response createKey(Map jsonKey) throws Exception {
     KMSWebApp.getAdminCallsMeter().mark();
-    Principal user = getPrincipal(securityContext);
-    String name = (String) jsonKey.get(KMSRESTConstants.NAME_FIELD);
+    UserGroupInformation user = HttpUserGroupInformation.get();
+    final String name = (String) jsonKey.get(KMSRESTConstants.NAME_FIELD);
     KMSClientProvider.checkNotEmpty(name, KMSRESTConstants.NAME_FIELD);
     assertAccess(KMSACLs.Type.CREATE, user, KMSOp.CREATE_KEY, name);
     String cipher = (String) jsonKey.get(KMSRESTConstants.CIPHER_FIELD);
-    String material = (String) jsonKey.get(KMSRESTConstants.MATERIAL_FIELD);
+    final String material = (String) jsonKey.get(KMSRESTConstants.MATERIAL_FIELD);
     int length = (jsonKey.containsKey(KMSRESTConstants.LENGTH_FIELD))
                  ? (Integer) jsonKey.get(KMSRESTConstants.LENGTH_FIELD) : 0;
     String description = (String)
@@ -142,7 +132,7 @@ public class KMS {
       assertAccess(KMSACLs.Type.SET_KEY_MATERIAL, user,
           KMSOp.CREATE_KEY, name);
     }
-    KeyProvider.Options options = new KeyProvider.Options(
+    final KeyProvider.Options options = new KeyProvider.Options(
         KMSWebApp.getConfiguration());
     if (cipher != null) {
       options.setCipher(cipher);
@@ -153,16 +143,23 @@ public class KMS {
     options.setDescription(description);
     options.setAttributes(attributes);
 
-    KeyProvider.KeyVersion keyVersion = (material != null)
-        ? provider.createKey(name, Base64.decodeBase64(material), options)
-        : provider.createKey(name, options);
-
-    provider.flush();
+    KeyProvider.KeyVersion keyVersion = user.doAs(
+        new PrivilegedExceptionAction<KeyVersion>() {
+          @Override
+          public KeyVersion run() throws Exception {
+            KeyProvider.KeyVersion keyVersion = (material != null)
+              ? provider.createKey(name, Base64.decodeBase64(material), options)
+              : provider.createKey(name, options);
+            provider.flush();
+            return keyVersion;
+          }
+        }
+    );
 
     kmsAudit.ok(user, KMSOp.CREATE_KEY, name, "UserProvidedMaterial:" +
         (material != null) + " Description:" + description);
 
-    if (!KMSWebApp.getACLs().hasAccess(KMSACLs.Type.GET, user.getName())) {
+    if (!KMSWebApp.getACLs().hasAccess(KMSACLs.Type.GET, user)) {
       keyVersion = removeKeyMaterial(keyVersion);
     }
     Map json = KMSServerJSONUtils.toJSON(keyVersion);
@@ -176,14 +173,21 @@ public class KMS {
 
   @DELETE
   @Path(KMSRESTConstants.KEY_RESOURCE + "/{name:.*}")
-  public Response deleteKey(@Context SecurityContext securityContext,
-      @PathParam("name") String name) throws Exception {
+  public Response deleteKey(@PathParam("name") final String name)
+      throws Exception {
     KMSWebApp.getAdminCallsMeter().mark();
-    Principal user = getPrincipal(securityContext);
+    UserGroupInformation user = HttpUserGroupInformation.get();
     assertAccess(KMSACLs.Type.DELETE, user, KMSOp.DELETE_KEY, name);
     KMSClientProvider.checkNotEmpty(name, "name");
-    provider.deleteKey(name);
-    provider.flush();
+
+    user.doAs(new PrivilegedExceptionAction<Void>() {
+      @Override
+      public Void run() throws Exception {
+        provider.deleteKey(name);
+        provider.flush();
+        return null;
+      }
+    });
 
     kmsAudit.ok(user, KMSOp.DELETE_KEY, name, "");
 
@@ -194,29 +198,36 @@ public class KMS {
   @Path(KMSRESTConstants.KEY_RESOURCE + "/{name:.*}")
   @Consumes(MediaType.APPLICATION_JSON)
   @Produces(MediaType.APPLICATION_JSON)
-  public Response rolloverKey(@Context SecurityContext securityContext,
-      @PathParam("name") String name, Map jsonMaterial)
-      throws Exception {
+  public Response rolloverKey(@PathParam("name") final String name,
+      Map jsonMaterial) throws Exception {
     KMSWebApp.getAdminCallsMeter().mark();
-    Principal user = getPrincipal(securityContext);
+    UserGroupInformation user = HttpUserGroupInformation.get();
     assertAccess(KMSACLs.Type.ROLLOVER, user, KMSOp.ROLL_NEW_VERSION, name);
     KMSClientProvider.checkNotEmpty(name, "name");
-    String material = (String)
+    final String material = (String)
         jsonMaterial.get(KMSRESTConstants.MATERIAL_FIELD);
     if (material != null) {
       assertAccess(KMSACLs.Type.SET_KEY_MATERIAL, user,
           KMSOp.ROLL_NEW_VERSION, name);
     }
-    KeyProvider.KeyVersion keyVersion = (material != null)
-        ? provider.rollNewVersion(name, Base64.decodeBase64(material))
-        : provider.rollNewVersion(name);
 
-    provider.flush();
+    KeyProvider.KeyVersion keyVersion = user.doAs(
+        new PrivilegedExceptionAction<KeyVersion>() {
+          @Override
+          public KeyVersion run() throws Exception {
+            KeyVersion keyVersion = (material != null)
+              ? provider.rollNewVersion(name, Base64.decodeBase64(material))
+              : provider.rollNewVersion(name);
+            provider.flush();
+            return keyVersion;
+          }
+        }
+    );
 
     kmsAudit.ok(user, KMSOp.ROLL_NEW_VERSION, name, "UserProvidedMaterial:" +
         (material != null) + " NewVersion:" + keyVersion.getVersionName());
 
-    if (!KMSWebApp.getACLs().hasAccess(KMSACLs.Type.GET, user.getName())) {
+    if (!KMSWebApp.getACLs().hasAccess(KMSACLs.Type.GET, user)) {
       keyVersion = removeKeyMaterial(keyVersion);
     }
     Map json = KMSServerJSONUtils.toJSON(keyVersion);
@@ -226,14 +237,23 @@ public class KMS {
   @GET
   @Path(KMSRESTConstants.KEYS_METADATA_RESOURCE)
   @Produces(MediaType.APPLICATION_JSON)
-  public Response getKeysMetadata(@Context SecurityContext securityContext,
-      @QueryParam(KMSRESTConstants.KEY) List<String> keyNamesList)
-      throws Exception {
+  public Response getKeysMetadata(@QueryParam(KMSRESTConstants.KEY)
+      List<String> keyNamesList) throws Exception {
     KMSWebApp.getAdminCallsMeter().mark();
-    Principal user = getPrincipal(securityContext);
-    String[] keyNames = keyNamesList.toArray(new String[keyNamesList.size()]);
+    UserGroupInformation user = HttpUserGroupInformation.get();
+    final String[] keyNames = keyNamesList.toArray(
+        new String[keyNamesList.size()]);
     assertAccess(KMSACLs.Type.GET_METADATA, user, KMSOp.GET_KEYS_METADATA);
-    KeyProvider.Metadata[] keysMeta = provider.getKeysMetadata(keyNames);
+
+    KeyProvider.Metadata[] keysMeta = user.doAs(
+        new PrivilegedExceptionAction<KeyProvider.Metadata[]>() {
+          @Override
+          public KeyProvider.Metadata[] run() throws Exception {
+            return provider.getKeysMetadata(keyNames);
+          }
+        }
+    );
+
     Object json = KMSServerJSONUtils.toJSON(keyNames, keysMeta);
     kmsAudit.ok(user, KMSOp.GET_KEYS_METADATA, "");
     return Response.ok().type(MediaType.APPLICATION_JSON).entity(json).build();
@@ -242,36 +262,52 @@ public class KMS {
   @GET
   @Path(KMSRESTConstants.KEYS_NAMES_RESOURCE)
   @Produces(MediaType.APPLICATION_JSON)
-  public Response getKeyNames(@Context SecurityContext securityContext)
-      throws Exception {
+  public Response getKeyNames() throws Exception {
     KMSWebApp.getAdminCallsMeter().mark();
-    Principal user = getPrincipal(securityContext);
+    UserGroupInformation user = HttpUserGroupInformation.get();
     assertAccess(KMSACLs.Type.GET_KEYS, user, KMSOp.GET_KEYS);
-    Object json = provider.getKeys();
+
+    List<String> json = user.doAs(
+        new PrivilegedExceptionAction<List<String>>() {
+          @Override
+          public List<String> run() throws Exception {
+            return provider.getKeys();
+          }
+        }
+    );
+
     kmsAudit.ok(user, KMSOp.GET_KEYS, "");
     return Response.ok().type(MediaType.APPLICATION_JSON).entity(json).build();
   }
 
   @GET
   @Path(KMSRESTConstants.KEY_RESOURCE + "/{name:.*}")
-  public Response getKey(@Context SecurityContext securityContext,
-      @PathParam("name") String name)
+  public Response getKey(@PathParam("name") String name)
       throws Exception {
-    return getMetadata(securityContext, name);
+    return getMetadata(name);
   }
 
   @GET
   @Path(KMSRESTConstants.KEY_RESOURCE + "/{name:.*}/" +
       KMSRESTConstants.METADATA_SUB_RESOURCE)
   @Produces(MediaType.APPLICATION_JSON)
-  public Response getMetadata(@Context SecurityContext securityContext,
-      @PathParam("name") String name)
+  public Response getMetadata(@PathParam("name") final String name)
       throws Exception {
-    Principal user = getPrincipal(securityContext);
+    UserGroupInformation user = HttpUserGroupInformation.get();
     KMSClientProvider.checkNotEmpty(name, "name");
     KMSWebApp.getAdminCallsMeter().mark();
     assertAccess(KMSACLs.Type.GET_METADATA, user, KMSOp.GET_METADATA, name);
-    Object json = KMSServerJSONUtils.toJSON(name, provider.getMetadata(name));
+
+    KeyProvider.Metadata metadata = user.doAs(
+        new PrivilegedExceptionAction<KeyProvider.Metadata>() {
+          @Override
+          public KeyProvider.Metadata run() throws Exception {
+            return provider.getMetadata(name);
+          }
+        }
+    );
+
+    Object json = KMSServerJSONUtils.toJSON(name, metadata);
     kmsAudit.ok(user, KMSOp.GET_METADATA, name, "");
     return Response.ok().type(MediaType.APPLICATION_JSON).entity(json).build();
   }
@@ -280,14 +316,23 @@ public class KMS {
   @Path(KMSRESTConstants.KEY_RESOURCE + "/{name:.*}/" +
       KMSRESTConstants.CURRENT_VERSION_SUB_RESOURCE)
   @Produces(MediaType.APPLICATION_JSON)
-  public Response getCurrentVersion(@Context SecurityContext securityContext,
-      @PathParam("name") String name)
+  public Response getCurrentVersion(@PathParam("name") final String name)
       throws Exception {
-    Principal user = getPrincipal(securityContext);
+    UserGroupInformation user = HttpUserGroupInformation.get();
     KMSClientProvider.checkNotEmpty(name, "name");
     KMSWebApp.getKeyCallsMeter().mark();
     assertAccess(KMSACLs.Type.GET, user, KMSOp.GET_CURRENT_KEY, name);
-    Object json = KMSServerJSONUtils.toJSON(provider.getCurrentKey(name));
+
+    KeyVersion keyVersion = user.doAs(
+        new PrivilegedExceptionAction<KeyVersion>() {
+          @Override
+          public KeyVersion run() throws Exception {
+            return provider.getCurrentKey(name);
+          }
+        }
+    );
+
+    Object json = KMSServerJSONUtils.toJSON(keyVersion);
     kmsAudit.ok(user, KMSOp.GET_CURRENT_KEY, name, "");
     return Response.ok().type(MediaType.APPLICATION_JSON).entity(json).build();
   }
@@ -295,14 +340,22 @@ public class KMS {
   @GET
   @Path(KMSRESTConstants.KEY_VERSION_RESOURCE + "/{versionName:.*}")
   @Produces(MediaType.APPLICATION_JSON)
-  public Response getKeyVersion(@Context SecurityContext securityContext,
-      @PathParam("versionName") String versionName)
-      throws Exception {
-    Principal user = getPrincipal(securityContext);
+  public Response getKeyVersion(
+      @PathParam("versionName") final String versionName) throws Exception {
+    UserGroupInformation user = HttpUserGroupInformation.get();
     KMSClientProvider.checkNotEmpty(versionName, "versionName");
     KMSWebApp.getKeyCallsMeter().mark();
-    KeyVersion keyVersion = provider.getKeyVersion(versionName);
     assertAccess(KMSACLs.Type.GET, user, KMSOp.GET_KEY_VERSION);
+
+    KeyVersion keyVersion = user.doAs(
+        new PrivilegedExceptionAction<KeyVersion>() {
+          @Override
+          public KeyVersion run() throws Exception {
+            return provider.getKeyVersion(versionName);
+          }
+        }
+    );
+
     if (keyVersion != null) {
       kmsAudit.ok(user, KMSOp.GET_KEY_VERSION, keyVersion.getName(), "");
     }
@@ -316,13 +369,12 @@ public class KMS {
       KMSRESTConstants.EEK_SUB_RESOURCE)
   @Produces(MediaType.APPLICATION_JSON)
   public Response generateEncryptedKeys(
-          @Context SecurityContext securityContext,
-          @PathParam("name") String name,
+          @PathParam("name") final String name,
           @QueryParam(KMSRESTConstants.EEK_OP) String edekOp,
           @DefaultValue("1")
-          @QueryParam(KMSRESTConstants.EEK_NUM_KEYS) int numKeys)
+          @QueryParam(KMSRESTConstants.EEK_NUM_KEYS) final int numKeys)
           throws Exception {
-    Principal user = getPrincipal(securityContext);
+    UserGroupInformation user = HttpUserGroupInformation.get();
     KMSClientProvider.checkNotEmpty(name, "name");
     KMSClientProvider.checkNotNull(edekOp, "eekOp");
 
@@ -330,12 +382,22 @@ public class KMS {
     if (edekOp.equals(KMSRESTConstants.EEK_GENERATE)) {
       assertAccess(KMSACLs.Type.GENERATE_EEK, user, KMSOp.GENERATE_EEK, name);
 
-      List<EncryptedKeyVersion> retEdeks =
+      final List<EncryptedKeyVersion> retEdeks =
           new LinkedList<EncryptedKeyVersion>();
       try {
-        for (int i = 0; i < numKeys; i ++) {
-          retEdeks.add(provider.generateEncryptedKey(name));
-        }
+
+        user.doAs(
+            new PrivilegedExceptionAction<Void>() {
+              @Override
+              public Void run() throws Exception {
+                for (int i = 0; i < numKeys; i++) {
+                  retEdeks.add(provider.generateEncryptedKey(name));
+                }
+                return null;
+              }
+            }
+        );
+
       } catch (Exception e) {
         throw new IOException(e);
       }
@@ -359,16 +421,17 @@ public class KMS {
   @Path(KMSRESTConstants.KEY_VERSION_RESOURCE + "/{versionName:.*}/" +
       KMSRESTConstants.EEK_SUB_RESOURCE)
   @Produces(MediaType.APPLICATION_JSON)
-  public Response decryptEncryptedKey(@Context SecurityContext securityContext,
-      @PathParam("versionName") String versionName,
+  public Response decryptEncryptedKey(
+      @PathParam("versionName") final String versionName,
       @QueryParam(KMSRESTConstants.EEK_OP) String eekOp,
       Map jsonPayload)
       throws Exception {
-    Principal user = getPrincipal(securityContext);
+    UserGroupInformation user = HttpUserGroupInformation.get();
     KMSClientProvider.checkNotEmpty(versionName, "versionName");
     KMSClientProvider.checkNotNull(eekOp, "eekOp");
 
-    String keyName = (String) jsonPayload.get(KMSRESTConstants.NAME_FIELD);
+    final String keyName = (String) jsonPayload.get(
+        KMSRESTConstants.NAME_FIELD);
     String ivStr = (String) jsonPayload.get(KMSRESTConstants.IV_FIELD);
     String encMaterialStr =
         (String) jsonPayload.get(KMSRESTConstants.MATERIAL_FIELD);
@@ -376,14 +439,24 @@ public class KMS {
     if (eekOp.equals(KMSRESTConstants.EEK_DECRYPT)) {
       assertAccess(KMSACLs.Type.DECRYPT_EEK, user, KMSOp.DECRYPT_EEK, keyName);
       KMSClientProvider.checkNotNull(ivStr, KMSRESTConstants.IV_FIELD);
-      byte[] iv = Base64.decodeBase64(ivStr);
+      final byte[] iv = Base64.decodeBase64(ivStr);
       KMSClientProvider.checkNotNull(encMaterialStr,
           KMSRESTConstants.MATERIAL_FIELD);
-      byte[] encMaterial = Base64.decodeBase64(encMaterialStr);
-      KeyProvider.KeyVersion retKeyVersion =
-          provider.decryptEncryptedKey(
-              new KMSClientProvider.KMSEncryptedKeyVersion(keyName, versionName,
-                  iv, KeyProviderCryptoExtension.EEK, encMaterial));
+      final byte[] encMaterial = Base64.decodeBase64(encMaterialStr);
+
+      KeyProvider.KeyVersion retKeyVersion = user.doAs(
+          new PrivilegedExceptionAction<KeyVersion>() {
+            @Override
+            public KeyVersion run() throws Exception {
+              return provider.decryptEncryptedKey(
+                  new KMSClientProvider.KMSEncryptedKeyVersion(keyName,
+                      versionName, iv, KeyProviderCryptoExtension.EEK,
+                      encMaterial)
+              );
+            }
+          }
+      );
+
       retJSON = KMSServerJSONUtils.toJSON(retKeyVersion);
       kmsAudit.ok(user, KMSOp.DECRYPT_EEK, keyName, "");
     } else {
@@ -400,14 +473,23 @@ public class KMS {
   @Path(KMSRESTConstants.KEY_RESOURCE + "/{name:.*}/" +
       KMSRESTConstants.VERSIONS_SUB_RESOURCE)
   @Produces(MediaType.APPLICATION_JSON)
-  public Response getKeyVersions(@Context SecurityContext securityContext,
-      @PathParam("name") String name)
+  public Response getKeyVersions(@PathParam("name") final String name)
       throws Exception {
-    Principal user = getPrincipal(securityContext);
+    UserGroupInformation user = HttpUserGroupInformation.get();
     KMSClientProvider.checkNotEmpty(name, "name");
     KMSWebApp.getKeyCallsMeter().mark();
     assertAccess(KMSACLs.Type.GET, user, KMSOp.GET_KEY_VERSIONS, name);
-    Object json = KMSServerJSONUtils.toJSON(provider.getKeyVersions(name));
+
+    List<KeyVersion> ret = user.doAs(
+        new PrivilegedExceptionAction<List<KeyVersion>>() {
+          @Override
+          public List<KeyVersion> run() throws Exception {
+            return provider.getKeyVersions(name);
+          }
+        }
+    );
+
+    Object json = KMSServerJSONUtils.toJSON(ret);
     kmsAudit.ok(user, KMSOp.GET_KEY_VERSIONS, name, "");
     return Response.ok().type(MediaType.APPLICATION_JSON).entity(json).build();
   }

hadoop-common-project/hadoop-kms/src/main/java/org/apache/hadoop/crypto/key/kms/server/KMSACLs.java

@@ -113,8 +113,7 @@ public class KMSACLs implements Runnable {
     return conf;
   }
 
-  public boolean hasAccess(Type type, String user) {
-    UserGroupInformation ugi = UserGroupInformation.createRemoteUser(user);
+  public boolean hasAccess(Type type, UserGroupInformation ugi) {
     return acls.get(type).isUserAllowed(ugi);
   }
 

hadoop-common-project/hadoop-kms/src/main/java/org/apache/hadoop/crypto/key/kms/server/KMSAudit.java

@@ -17,6 +17,7 @@
  */
 package org.apache.hadoop.crypto.key.kms.server;
 
+import org.apache.hadoop.security.UserGroupInformation;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -29,7 +30,6 @@ import com.google.common.cache.RemovalNotification;
 import com.google.common.collect.Sets;
 import com.google.common.util.concurrent.ThreadFactoryBuilder;
 
-import java.security.Principal;
 import java.util.LinkedList;
 import java.util.List;
 import java.util.Set;
@@ -186,22 +186,22 @@ public class KMSAudit {
     }
   }
 
-  public void ok(Principal user, KMS.KMSOp op, String key,
+  public void ok(UserGroupInformation user, KMS.KMSOp op, String key,
       String extraMsg) {
-    op(OpStatus.OK, op, user.getName(), key, extraMsg);
+    op(OpStatus.OK, op, user.getShortUserName(), key, extraMsg);
   }
 
-  public void ok(Principal user, KMS.KMSOp op, String extraMsg) {
-    op(OpStatus.OK, op, user.getName(), null, extraMsg);
+  public void ok(UserGroupInformation user, KMS.KMSOp op, String extraMsg) {
+    op(OpStatus.OK, op, user.getShortUserName(), null, extraMsg);
   }
 
-  public void unauthorized(Principal user, KMS.KMSOp op, String key) {
-    op(OpStatus.UNAUTHORIZED, op, user.getName(), key, "");
+  public void unauthorized(UserGroupInformation user, KMS.KMSOp op, String key) {
+    op(OpStatus.UNAUTHORIZED, op, user.getShortUserName(), key, "");
   }
 
-  public void error(Principal user, String method, String url,
+  public void error(UserGroupInformation user, String method, String url,
       String extraMsg) {
-    op(OpStatus.ERROR, null, user.getName(), null, "Method:'" + method
+    op(OpStatus.ERROR, null, user.getShortUserName(), null, "Method:'" + method
         + "' Exception:'" + extraMsg + "'");
   }
 

hadoop-common-project/hadoop-kms/src/main/java/org/apache/hadoop/crypto/key/kms/server/KMSAuthenticationFilter.java

@@ -19,7 +19,13 @@ package org.apache.hadoop.crypto.key.kms.server;
 
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.conf.Configuration;
-import org.apache.hadoop.security.authentication.server.AuthenticationFilter;
+import org.apache.hadoop.crypto.key.kms.KMSClientProvider;
+import org.apache.hadoop.security.authentication.server.KerberosAuthenticationHandler;
+import org.apache.hadoop.security.authentication.server.PseudoAuthenticationHandler;
+import org.apache.hadoop.security.token.delegation.web.DelegationTokenAuthenticationFilter;
+import org.apache.hadoop.security.token.delegation.web.DelegationTokenAuthenticationHandler;
+import org.apache.hadoop.security.token.delegation.web.KerberosDelegationTokenAuthenticationHandler;
+import org.apache.hadoop.security.token.delegation.web.PseudoDelegationTokenAuthenticationHandler;
 
 import javax.servlet.FilterChain;
 import javax.servlet.FilterConfig;
@@ -38,7 +44,8 @@ import java.util.Properties;
  * file.
  */
 @InterfaceAudience.Private
-public class KMSAuthenticationFilter extends AuthenticationFilter {
+public class KMSAuthenticationFilter
+    extends DelegationTokenAuthenticationFilter {
   private static final String CONF_PREFIX = KMSConfiguration.CONFIG_PREFIX +
       "authentication.";
 
@@ -55,6 +62,16 @@ public class KMSAuthenticationFilter extends AuthenticationFilter {
         props.setProperty(name, value);
       }
     }
+    String authType = props.getProperty(AUTH_TYPE);
+    if (authType.equals(PseudoAuthenticationHandler.TYPE)) {
+      props.setProperty(AUTH_TYPE,
+          PseudoDelegationTokenAuthenticationHandler.class.getName());
+    } else if (authType.equals(KerberosAuthenticationHandler.TYPE)) {
+      props.setProperty(AUTH_TYPE,
+          KerberosDelegationTokenAuthenticationHandler.class.getName());
+    }
+    props.setProperty(DelegationTokenAuthenticationHandler.TOKEN_KIND,
+        KMSClientProvider.TOKEN_KIND);
     return props;
   }
 

hadoop-common-project/hadoop-kms/src/main/java/org/apache/hadoop/crypto/key/kms/server/KMSExceptionsProvider.java

@@ -23,6 +23,7 @@ import com.sun.jersey.api.container.ContainerException;
 
 import org.apache.hadoop.crypto.key.kms.KMSRESTConstants;
 import org.apache.hadoop.security.AccessControlException;
+import org.apache.hadoop.security.UserGroupInformation;
 import org.apache.hadoop.security.authentication.client.AuthenticationException;
 import org.apache.hadoop.security.authorize.AuthorizationException;
 import org.slf4j.Logger;
@@ -34,7 +35,6 @@ import javax.ws.rs.ext.ExceptionMapper;
 import javax.ws.rs.ext.Provider;
 
 import java.io.IOException;
-import java.security.Principal;
 import java.util.LinkedHashMap;
 import java.util.Map;
 
@@ -102,7 +102,7 @@ public class KMSExceptionsProvider implements ExceptionMapper<Exception> {
       status = Response.Status.INTERNAL_SERVER_ERROR;
     }
     if (doAudit) {
-      KMSWebApp.getKMSAudit().error(KMSMDCFilter.getPrincipal(),
+      KMSWebApp.getKMSAudit().error(KMSMDCFilter.getUgi(),
           KMSMDCFilter.getMethod(),
           KMSMDCFilter.getURL(), getOneLineMessage(exception));
     }
@@ -110,11 +110,11 @@ public class KMSExceptionsProvider implements ExceptionMapper<Exception> {
   }
 
   protected void log(Response.Status status, Throwable ex) {
-    Principal principal = KMSMDCFilter.getPrincipal();
+    UserGroupInformation ugi = KMSMDCFilter.getUgi();
     String method = KMSMDCFilter.getMethod();
     String url = KMSMDCFilter.getURL();
     String msg = getOneLineMessage(ex);
-    LOG.warn("User:{} Method:{} URL:{} Response:{}-{}", principal, method, url,
+    LOG.warn("User:'{}' Method:{} URL:{} Response:{}-{}", ugi, method, url,
         status, msg, ex);
   }
 

hadoop-common-project/hadoop-kms/src/main/java/org/apache/hadoop/crypto/key/kms/server/KMSMDCFilter.java

@@ -18,6 +18,8 @@
 package org.apache.hadoop.crypto.key.kms.server;
 
 import org.apache.hadoop.classification.InterfaceAudience;
+import org.apache.hadoop.security.UserGroupInformation;
+import org.apache.hadoop.security.token.delegation.web.HttpUserGroupInformation;
 
 import javax.servlet.Filter;
 import javax.servlet.FilterChain;
@@ -27,7 +29,6 @@ import javax.servlet.ServletRequest;
 import javax.servlet.ServletResponse;
 import javax.servlet.http.HttpServletRequest;
 import java.io.IOException;
-import java.security.Principal;
 
 /**
  * Servlet filter that captures context of the HTTP request to be use in the
@@ -37,12 +38,12 @@ import java.security.Principal;
 public class KMSMDCFilter implements Filter {
 
   private static class Data {
-    private Principal principal;
+    private UserGroupInformation ugi;
     private String method;
     private StringBuffer url;
 
-    private Data(Principal principal, String method, StringBuffer url) {
-      this.principal = principal;
+    private Data(UserGroupInformation ugi, String method, StringBuffer url) {
+      this.ugi = ugi;
       this.method = method;
       this.url = url;
     }
@@ -50,8 +51,8 @@ public class KMSMDCFilter implements Filter {
 
   private static ThreadLocal<Data> DATA_TL = new ThreadLocal<Data>();
 
-  public static Principal getPrincipal() {
-    return DATA_TL.get().principal;
+  public static UserGroupInformation getUgi() {
+    return DATA_TL.get().ugi;
   }
 
   public static String getMethod() {
@@ -72,14 +73,14 @@ public class KMSMDCFilter implements Filter {
       throws IOException, ServletException {
     try {
       DATA_TL.remove();
-      Principal principal = ((HttpServletRequest) request).getUserPrincipal();
+      UserGroupInformation ugi = HttpUserGroupInformation.get();
       String method = ((HttpServletRequest) request).getMethod();
       StringBuffer requestURL = ((HttpServletRequest) request).getRequestURL();
       String queryString = ((HttpServletRequest) request).getQueryString();
       if (queryString != null) {
         requestURL.append("?").append(queryString);
       }
-      DATA_TL.set(new Data(principal, method, requestURL));
+      DATA_TL.set(new Data(ugi, method, requestURL));
       chain.doFilter(request, response);
     } finally {
       DATA_TL.remove();

hadoop-common-project/hadoop-kms/src/site/apt/index.apt.vm

@@ -319,6 +319,46 @@ $ keytool -genkey -alias tomcat -keyalg RSA
 </configuration>
 +---+
 
+** KMS Delegation Token Configuration
+
+  KMS delegation token secret manager can be configured with the following
+  properties:
+
+  +---+
+    <property>
+      <name>hadoop.kms.authentication.delegation-token.update-interval.sec</name>
+      <value>86400</value>
+      <description>
+        How often the master key is rotated, in seconds. Default value 1 day.
+      </description>
+    </property>
+
+    <property>
+      <name>hadoop.kms.authentication.delegation-token.max-lifetime.sec</name>
+      <value>604800</value>
+      <description>
+        Maximum lifetime of a delagation token, in seconds. Default value 7 days.
+      </description>
+    </property>
+
+    <property>
+      <name>hadoop.kms.authentication.delegation-token.renew-interval.sec</name>
+      <value>86400</value>
+      <description>
+        Renewal interval of a delagation token, in seconds. Default value 1 day.
+      </description>
+    </property>
+
+    <property>
+      <name>hadoop.kms.authentication.delegation-token.removal-scan-interval.sec</name>
+      <value>3600</value>
+      <description>
+        Scan interval to remove expired delegation tokens.
+      </description>
+    </property>
+  +---+
+
+
 ** KMS HTTP REST API
 
 *** Create a Key

hadoop-common-project/hadoop-kms/src/test/java/org/apache/hadoop/crypto/key/kms/server/TestKMS.java

@@ -22,8 +22,13 @@ import org.apache.hadoop.crypto.key.KeyProvider;
 import org.apache.hadoop.crypto.key.KeyProvider.KeyVersion;
 import org.apache.hadoop.crypto.key.KeyProviderCryptoExtension;
 import org.apache.hadoop.crypto.key.KeyProviderCryptoExtension.EncryptedKeyVersion;
+import org.apache.hadoop.crypto.key.KeyProviderDelegationTokenExtension;
 import org.apache.hadoop.crypto.key.kms.KMSClientProvider;
+import org.apache.hadoop.io.Text;
 import org.apache.hadoop.minikdc.MiniKdc;
+import org.apache.hadoop.security.Credentials;
+import org.apache.hadoop.security.SecurityUtil;
+import org.apache.hadoop.security.UserGroupInformation;
 import org.apache.hadoop.security.authorize.AuthorizationException;
 import org.apache.hadoop.security.ssl.KeyStoreTestUtil;
 import org.junit.AfterClass;
@@ -45,6 +50,7 @@ import java.io.FileWriter;
 import java.io.IOException;
 import java.io.Writer;
 import java.net.InetAddress;
+import java.net.InetSocketAddress;
 import java.net.MalformedURLException;
 import java.net.ServerSocket;
 import java.net.SocketTimeoutException;
@@ -565,6 +571,17 @@ public class TestKMS {
         Assert.assertEquals("d", meta.getDescription());
         Assert.assertEquals(attributes, meta.getAttributes());
 
+        KeyProviderDelegationTokenExtension kpdte =
+            KeyProviderDelegationTokenExtension.
+                createKeyProviderDelegationTokenExtension(kp);
+        Credentials credentials = new Credentials();
+        kpdte.addDelegationTokens("foo", credentials);
+        Assert.assertEquals(1, credentials.getAllTokens().size());
+        InetSocketAddress kmsAddr = new InetSocketAddress(getKMSUrl().getHost(),
+            getKMSUrl().getPort());
+
+        Assert.assertEquals(new Text("kms-dt"), credentials.getToken(
+            SecurityUtil.buildTokenService(kmsAddr)).getKind());
         return null;
       }
     });
@@ -596,13 +613,13 @@ public class TestKMS {
       public Void call() throws Exception {
         final Configuration conf = new Configuration();
         conf.setInt(KeyProvider.DEFAULT_BITLENGTH_NAME, 128);
-        URI uri = createKMSUri(getKMSUrl());
-        final KeyProvider kp = new KMSClientProvider(uri, conf);
+        final URI uri = createKMSUri(getKMSUrl());
 
         //nothing allowed
         doAs("client", new PrivilegedExceptionAction<Void>() {
           @Override
           public Void run() throws Exception {
+            KeyProvider kp = new KMSClientProvider(uri, conf);
             try {
               kp.createKey("k", new KeyProvider.Options(conf));
               Assert.fail();
@@ -693,6 +710,7 @@ public class TestKMS {
         doAs("CREATE", new PrivilegedExceptionAction<Void>() {
           @Override
           public Void run() throws Exception {
+            KeyProvider kp = new KMSClientProvider(uri, conf);
             try {
               KeyProvider.KeyVersion kv = kp.createKey("k0",
                   new KeyProvider.Options(conf));
@@ -707,6 +725,7 @@ public class TestKMS {
         doAs("DELETE", new PrivilegedExceptionAction<Void>() {
           @Override
           public Void run() throws Exception {
+            KeyProvider kp = new KMSClientProvider(uri, conf);
             try {
               kp.deleteKey("k0");
             } catch (Exception ex) {
@@ -719,6 +738,7 @@ public class TestKMS {
         doAs("SET_KEY_MATERIAL", new PrivilegedExceptionAction<Void>() {
           @Override
           public Void run() throws Exception {
+            KeyProvider kp = new KMSClientProvider(uri, conf);
             try {
               KeyProvider.KeyVersion kv = kp.createKey("k1", new byte[16],
                   new KeyProvider.Options(conf));
@@ -733,6 +753,7 @@ public class TestKMS {
         doAs("ROLLOVER", new PrivilegedExceptionAction<Void>() {
           @Override
           public Void run() throws Exception {
+            KeyProvider kp = new KMSClientProvider(uri, conf);
             try {
               KeyProvider.KeyVersion kv = kp.rollNewVersion("k1");
               Assert.assertNull(kv.getMaterial());
@@ -746,6 +767,7 @@ public class TestKMS {
         doAs("SET_KEY_MATERIAL", new PrivilegedExceptionAction<Void>() {
           @Override
           public Void run() throws Exception {
+            KeyProvider kp = new KMSClientProvider(uri, conf);
             try {
               KeyProvider.KeyVersion kv =
                   kp.rollNewVersion("k1", new byte[16]);
@@ -761,6 +783,7 @@ public class TestKMS {
             doAs("GET", new PrivilegedExceptionAction<KeyVersion>() {
           @Override
           public KeyVersion run() throws Exception {
+            KeyProvider kp = new KMSClientProvider(uri, conf);
             try {
               kp.getKeyVersion("k1@0");
               KeyVersion kv = kp.getCurrentKey("k1");
@@ -777,6 +800,7 @@ public class TestKMS {
                 new PrivilegedExceptionAction<EncryptedKeyVersion>() {
           @Override
           public EncryptedKeyVersion run() throws Exception {
+            KeyProvider kp = new KMSClientProvider(uri, conf);
             try {
               KeyProviderCryptoExtension kpCE = KeyProviderCryptoExtension.
                       createKeyProviderCryptoExtension(kp);
@@ -793,6 +817,7 @@ public class TestKMS {
         doAs("DECRYPT_EEK", new PrivilegedExceptionAction<Void>() {
           @Override
           public Void run() throws Exception {
+            KeyProvider kp = new KMSClientProvider(uri, conf);
             try {
               KeyProviderCryptoExtension kpCE = KeyProviderCryptoExtension.
                       createKeyProviderCryptoExtension(kp);
@@ -807,6 +832,7 @@ public class TestKMS {
         doAs("GET_KEYS", new PrivilegedExceptionAction<Void>() {
           @Override
           public Void run() throws Exception {
+            KeyProvider kp = new KMSClientProvider(uri, conf);
             try {
               kp.getKeys();
             } catch (Exception ex) {
@@ -819,6 +845,7 @@ public class TestKMS {
         doAs("GET_METADATA", new PrivilegedExceptionAction<Void>() {
           @Override
           public Void run() throws Exception {
+            KeyProvider kp = new KMSClientProvider(uri, conf);
             try {
               kp.getMetadata("k1");
               kp.getKeysMetadata("k1");
@@ -836,6 +863,7 @@ public class TestKMS {
         Thread.sleep(10); // to ensure the ACLs file modifiedTime is newer
         conf.set(KMSACLs.Type.CREATE.getConfigKey(), "foo");
         writeConf(testDir, conf);
+        Thread.sleep(1000);
 
         KMSWebApp.getACLs().run(); // forcing a reload by hand.
 
@@ -844,6 +872,7 @@ public class TestKMS {
           @Override
           public Void run() throws Exception {
             try {
+              KeyProvider kp = new KMSClientProvider(uri, conf);
               KeyProvider.KeyVersion kv = kp.createKey("k2",
                   new KeyProvider.Options(conf));
               Assert.fail();
@@ -982,4 +1011,69 @@ public class TestKMS {
 
     sock.close();
   }
+
+  @Test
+  public void testDelegationTokenAccess() throws Exception {
+    final File testDir = getTestDir();
+    Configuration conf = createBaseKMSConf(testDir);
+    conf.set("hadoop.kms.authentication.type", "kerberos");
+    conf.set("hadoop.kms.authentication.kerberos.keytab",
+        keytab.getAbsolutePath());
+    conf.set("hadoop.kms.authentication.kerberos.principal", "HTTP/localhost");
+    conf.set("hadoop.kms.authentication.kerberos.name.rules", "DEFAULT");
+
+    writeConf(testDir, conf);
+
+    runServer(null, null, testDir, new KMSCallable() {
+      @Override
+      public Void call() throws Exception {
+        final Configuration conf = new Configuration();
+        conf.setInt(KeyProvider.DEFAULT_BITLENGTH_NAME, 64);
+        final URI uri = createKMSUri(getKMSUrl());
+        final Credentials credentials = new Credentials();
+        final UserGroupInformation nonKerberosUgi =
+            UserGroupInformation.getCurrentUser();
+
+        try {
+          KeyProvider kp = new KMSClientProvider(uri, conf);
+          kp.createKey("kA", new KeyProvider.Options(conf));
+        } catch (IOException ex) {
+          System.out.println(ex.getMessage());
+        }
+
+        doAs("client", new PrivilegedExceptionAction<Void>() {
+          @Override
+          public Void run() throws Exception {
+            KeyProvider kp = new KMSClientProvider(uri, conf);
+            KeyProviderDelegationTokenExtension kpdte =
+                KeyProviderDelegationTokenExtension.
+                    createKeyProviderDelegationTokenExtension(kp);
+            kpdte.addDelegationTokens("foo", credentials);
+            return null;
+          }
+        });
+
+        nonKerberosUgi.addCredentials(credentials);
+
+        try {
+          KeyProvider kp = new KMSClientProvider(uri, conf);
+          kp.createKey("kA", new KeyProvider.Options(conf));
+        } catch (IOException ex) {
+          System.out.println(ex.getMessage());
+        }
+
+        nonKerberosUgi.doAs(new PrivilegedExceptionAction<Void>() {
+          @Override
+          public Void run() throws Exception {
+            KeyProvider kp = new KMSClientProvider(uri, conf);
+            kp.createKey("kD", new KeyProvider.Options(conf));
+            return null;
+          }
+        });
+
+        return null;
+      }
+    });
+  }
+
 }

hadoop-common-project/hadoop-kms/src/test/java/org/apache/hadoop/crypto/key/kms/server/TestKMSACLs.java

@@ -18,6 +18,7 @@
 package org.apache.hadoop.crypto.key.kms.server;
 
 import org.apache.hadoop.conf.Configuration;
+import org.apache.hadoop.security.UserGroupInformation;
 import org.junit.Assert;
 import org.junit.Test;
 
@@ -27,7 +28,8 @@ public class TestKMSACLs {
   public void testDefaults() {
     KMSACLs acls = new KMSACLs(new Configuration(false));
     for (KMSACLs.Type type : KMSACLs.Type.values()) {
-      Assert.assertTrue(acls.hasAccess(type, "foo"));
+      Assert.assertTrue(acls.hasAccess(type,
+          UserGroupInformation.createRemoteUser("foo")));
     }
   }
 
@@ -39,8 +41,10 @@ public class TestKMSACLs {
     }
     KMSACLs acls = new KMSACLs(conf);
     for (KMSACLs.Type type : KMSACLs.Type.values()) {
-      Assert.assertTrue(acls.hasAccess(type, type.toString()));
-      Assert.assertFalse(acls.hasAccess(type, "foo"));
+      Assert.assertTrue(acls.hasAccess(type,
+          UserGroupInformation.createRemoteUser(type.toString())));
+      Assert.assertFalse(acls.hasAccess(type,
+          UserGroupInformation.createRemoteUser("foo")));
     }
   }
 

hadoop-common-project/hadoop-kms/src/test/java/org/apache/hadoop/crypto/key/kms/server/TestKMSAudit.java

@@ -21,9 +21,9 @@ import java.io.ByteArrayOutputStream;
 import java.io.FilterOutputStream;
 import java.io.OutputStream;
 import java.io.PrintStream;
-import java.security.Principal;
 
 import org.apache.hadoop.crypto.key.kms.server.KMS.KMSOp;
+import org.apache.hadoop.security.UserGroupInformation;
 import org.apache.log4j.LogManager;
 import org.apache.log4j.PropertyConfigurator;
 import org.junit.After;
@@ -81,8 +81,8 @@ public class TestKMSAudit {
 
   @Test
   public void testAggregation() throws Exception {
-    Principal luser = Mockito.mock(Principal.class);
-    Mockito.when(luser.getName()).thenReturn("luser");
+    UserGroupInformation luser = Mockito.mock(UserGroupInformation.class);
+    Mockito.when(luser.getShortUserName()).thenReturn("luser");
     kmsAudit.ok(luser, KMSOp.DECRYPT_EEK, "k1", "testmsg");
     kmsAudit.ok(luser, KMSOp.DECRYPT_EEK, "k1", "testmsg");
     kmsAudit.ok(luser, KMSOp.DECRYPT_EEK, "k1", "testmsg");
@@ -109,8 +109,8 @@ public class TestKMSAudit {
 
   @Test
   public void testAggregationUnauth() throws Exception {
-    Principal luser = Mockito.mock(Principal.class);
-    Mockito.when(luser.getName()).thenReturn("luser");
+    UserGroupInformation luser = Mockito.mock(UserGroupInformation.class);
+    Mockito.when(luser.getShortUserName()).thenReturn("luser");
     kmsAudit.unauthorized(luser, KMSOp.GENERATE_EEK, "k2");
     Thread.sleep(1000);
     kmsAudit.ok(luser, KMSOp.GENERATE_EEK, "k3", "testmsg");