diff --git a/core/java/android/content/pm/parsing/ParsingPackageUtils.java b/core/java/android/content/pm/parsing/ParsingPackageUtils.java
index 9372c957af347..cb2943122781c 100644
--- a/core/java/android/content/pm/parsing/ParsingPackageUtils.java
+++ b/core/java/android/content/pm/parsing/ParsingPackageUtils.java
@@ -396,8 +396,13 @@ public class ParsingPackageUtils {
                 }
             }
 
-            pkg.setVolumeUuid(volumeUuid)
-                    .setSigningDetails(SigningDetails.UNKNOWN);
+            pkg.setVolumeUuid(volumeUuid);
+
+            if ((flags & PackageParser.PARSE_COLLECT_CERTIFICATES) != 0) {
+                pkg.setSigningDetails(getSigningDetails(pkg, false));
+            } else {
+                pkg.setSigningDetails(SigningDetails.UNKNOWN);
+            }
 
             return input.success(pkg);
         } catch (Exception e) {
@@ -449,7 +454,7 @@ public class ParsingPackageUtils {
      */
     private ParseResult<ParsingPackage> parseBaseApk(ParseInput input, String apkPath,
             String codePath, Resources res, XmlResourceParser parser, int flags)
-            throws XmlPullParserException, IOException {
+            throws XmlPullParserException, IOException, PackageParserException {
         final String splitName;
         final String pkgName;
 
diff --git a/services/core/java/com/android/server/pm/ApexManager.java b/services/core/java/com/android/server/pm/ApexManager.java
index 92c145275ac85..aafd261f7d9f9 100644
--- a/services/core/java/com/android/server/pm/ApexManager.java
+++ b/services/core/java/com/android/server/pm/ApexManager.java
@@ -30,9 +30,9 @@ import android.content.pm.ApplicationInfo;
 import android.content.pm.PackageInfo;
 import android.content.pm.PackageInstaller;
 import android.content.pm.PackageManager;
+import android.content.pm.PackageParser;
 import android.content.pm.PackageParser.PackageParserException;
 import android.content.pm.parsing.PackageInfoWithoutStateUtils;
-import android.content.pm.parsing.ParsingPackageUtils;
 import android.os.Binder;
 import android.os.Environment;
 import android.os.RemoteException;
@@ -50,7 +50,6 @@ import com.android.internal.util.IndentingPrintWriter;
 import com.android.internal.util.Preconditions;
 import com.android.server.pm.parsing.PackageParser2;
 import com.android.server.pm.parsing.pkg.AndroidPackage;
-import com.android.server.pm.parsing.pkg.ParsedPackage;
 import com.android.server.utils.TimingsTraceAndSlog;
 
 import com.google.android.collect.Lists;
@@ -491,7 +490,7 @@ public abstract class ApexManager {
 
             for (ApexInfo ai : allPkgs) {
                 File apexFile = new File(ai.modulePath);
-                parallelPackageParser.submit(apexFile, 0);
+                parallelPackageParser.submit(apexFile, PackageParser.PARSE_COLLECT_CERTIFICATES);
                 parsingApexInfo.put(apexFile, ai);
             }
 
@@ -504,18 +503,8 @@ public abstract class ApexManager {
                 ApexInfo ai = parsingApexInfo.get(parseResult.scanFile);
 
                 if (throwable == null) {
-                    // Unfortunately, ParallelPackageParser won't collect certificates for us. We
-                    // need to manually collect them here.
-                    ParsedPackage pp = parseResult.parsedPackage;
-                    try {
-                        pp.setSigningDetails(
-                                ParsingPackageUtils.getSigningDetails(pp, false));
-                    } catch (PackageParserException e) {
-                        throw new IllegalStateException(
-                                "Unable to collect certificates for " + ai.modulePath, e);
-                    }
                     final PackageInfo packageInfo = PackageInfoWithoutStateUtils.generate(
-                            pp, ai, flags);
+                            parseResult.parsedPackage, ai, flags);
                     if (packageInfo == null) {
                         throw new IllegalStateException("Unable to generate package info: "
                                 + ai.modulePath);