diff --git a/core/base_rules.mk b/core/base_rules.mk
index 188c352..f0a6398 100644
--- a/core/base_rules.mk
+++ b/core/base_rules.mk
@@ -529,7 +529,7 @@
 ifdef LOCAL_DEX_PREOPT
 installed_odex := $(basename $(LOCAL_INSTALLED_MODULE)).odex
 built_odex := $(basename $(LOCAL_BUILT_MODULE)).odex
-$(installed_odex) : $(built_odex) | $(ACP)
+$(installed_odex) : $(built_odex) $(LOCAL_BUILT_MODULE) | $(ACP)
 	@echo "Install: $@"
 	$(copy-file-to-target)
 
diff --git a/core/build_id.mk b/core/build_id.mk
index aee36c5..ffff91e 100644
--- a/core/build_id.mk
+++ b/core/build_id.mk
@@ -1,4 +1,3 @@
-
 #
 # Copyright (C) 2008 The Android Open Source Project
 #
@@ -14,9 +13,20 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
+
+#
+# Defines branch-specific values.
+#
+
 # BUILD_ID is usually used to specify the branch name
 # (like "MAIN") or a branch name and a release candidate
-# (like "CRB01").  It must be a single word, and is
+# (like "TC1-RC5").  It must be a single word, and is
 # capitalized by convention.
+#
+BUILD_ID := JB_MR2
 
-export BUILD_ID=JWR66O
+# DISPLAY_BUILD_NUMBER should only be set for development branches,
+# If set, the BUILD_NUMBER (cl) is appended to the BUILD_ID for
+# a more descriptive BUILD_ID_DISPLAY, otherwise BUILD_ID_DISPLAY
+# is the same as BUILD_ID
+DISPLAY_BUILD_NUMBER := true
diff --git a/core/combo/TARGET_linux-arm.mk b/core/combo/TARGET_linux-arm.mk
index 371ba96..8fc39e9 100644
--- a/core/combo/TARGET_linux-arm.mk
+++ b/core/combo/TARGET_linux-arm.mk
@@ -101,7 +101,7 @@
 			-fstack-protector \
 			-Wa,--noexecstack \
 			-Werror=format-security \
-			-D_FORTIFY_SOURCE=1 \
+			-D_FORTIFY_SOURCE=2 \
 			-fno-short-enums \
 			$(arch_variant_cflags)
 
diff --git a/core/combo/TARGET_linux-mips.mk b/core/combo/TARGET_linux-mips.mk
index 83fe657..c878ae5 100644
--- a/core/combo/TARGET_linux-mips.mk
+++ b/core/combo/TARGET_linux-mips.mk
@@ -89,7 +89,7 @@
 			-funwind-tables \
 			-Wa,--noexecstack \
 			-Werror=format-security \
-			-D_FORTIFY_SOURCE=1 \
+			-D_FORTIFY_SOURCE=2 \
 			$(arch_variant_cflags)
 
 android_config_h := $(call select-android-config-h,linux-mips)
diff --git a/core/combo/TARGET_linux-x86.mk b/core/combo/TARGET_linux-x86.mk
index 04531b2..5c9a76b 100644
--- a/core/combo/TARGET_linux-x86.mk
+++ b/core/combo/TARGET_linux-x86.mk
@@ -90,7 +90,7 @@
 			-Ulinux \
 			-Wa,--noexecstack \
 			-Werror=format-security \
-			-D_FORTIFY_SOURCE=1 \
+			-D_FORTIFY_SOURCE=2 \
 			-Wstrict-aliasing=2 \
 			-fPIC -fPIE \
 			-ffunction-sections \
diff --git a/core/combo/arch/mips/mips32r2-fp-xburst.mk b/core/combo/arch/mips/mips32r2-fp-xburst.mk
new file mode 100644
index 0000000..3768226
--- /dev/null
+++ b/core/combo/arch/mips/mips32r2-fp-xburst.mk
@@ -0,0 +1,17 @@
+# Configuration for Android on Ingenic xb4780/Xburst MIPS CPU.
+# Generating binaries for MIPS32R2/hard-float/little-endian without
+# support for the Madd family of instructions.
+
+ARCH_MIPS_HAS_FPU :=true
+ARCH_HAVE_ALIGNED_DOUBLES :=true
+arch_variant_cflags := \
+    -EL \
+    -march=mips32r2 \
+    -mtune=mips32r2 \
+    -mips32r2 \
+    -mhard-float \
+    -msynci \
+    -mno-fused-madd
+
+arch_variant_ldflags := \
+    -EL
diff --git a/core/dex_preopt.mk b/core/dex_preopt.mk
index 82dd153..0c9904a 100644
--- a/core/dex_preopt.mk
+++ b/core/dex_preopt.mk
@@ -4,7 +4,7 @@
 ####################################
 
 # TODO: replace it with device's BOOTCLASSPATH
-DEXPREOPT_BOOT_JARS := core:core-junit:bouncycastle:ext:framework:telephony-common:voip-common:mms-common:android.policy:services:apache-xml
+DEXPREOPT_BOOT_JARS := core:conscrypt:okhttp:core-junit:bouncycastle:ext:framework:telephony-common:voip-common:mms-common:android.policy:services:apache-xml
 DEXPREOPT_BOOT_JARS_MODULES := $(subst :, ,$(DEXPREOPT_BOOT_JARS))
 
 DEXPREOPT_BUILD_DIR := $(OUT_DIR)
diff --git a/core/llvm_config.mk b/core/llvm_config.mk
index c4b4af4..18e689e 100644
--- a/core/llvm_config.mk
+++ b/core/llvm_config.mk
@@ -64,7 +64,8 @@
     -mtune=mips32r2 \
     -march=mips32 \
     -mtune=mips32 \
-    -msynci
+    -msynci \
+    -mno-fused-madd
 endif
 ifeq ($(TARGET_ARCH),x86)
   RS_TRIPLE := i686-unknown-linux
diff --git a/core/main.mk b/core/main.mk
index e03801c..6a077e4 100644
--- a/core/main.mk
+++ b/core/main.mk
@@ -794,9 +794,14 @@
     unbundled_build_modules := $(TARGET_BUILD_APPS)
   endif
 
+  # Dist the installed files if they exist.
   apps_only_installed_files := $(foreach m,$(unbundled_build_modules),$(ALL_MODULES.$(m).INSTALLED))
-  # dist the unbundled app.
   $(call dist-for-goals,apps_only, $(apps_only_installed_files))
+  # For uninstallable modules such as static Java library, we have to dist the built file,
+  # as <module_name>.<suffix>
+  apps_only_dist_built_files := $(foreach m,$(unbundled_build_modules),$(if $(ALL_MODULES.$(m).INSTALLED),,\
+      $(ALL_MODULES.$(m).BUILT):$(m)$(suffix $(ALL_MODULES.$(m).BUILT))))
+  $(call dist-for-goals,apps_only, $(apps_only_dist_built_files))
 
   ifeq ($(EMMA_INSTRUMENT),true)
     $(EMMA_META_ZIP) : $(apps_only_installed_files)
diff --git a/core/proguard.flags b/core/proguard.flags
index d8ad3bd..1e3951b 100644
--- a/core/proguard.flags
+++ b/core/proguard.flags
@@ -1,11 +1,3 @@
-# see http://sourceforge.net/tracker/?func=detail&aid=2787465&group_id=54750&atid=474707
--optimizations !code/simplification/arithmetic
--optimizations !code/simplification/cast
--allowaccessmodification
-
-# To prevent name conflict in incremental obfuscation.
--useuniqueclassmembernames
-
 # dex does not like code run through proguard optimize and preverify steps.
 -dontoptimize
 -dontpreverify
@@ -16,8 +8,10 @@
 # Add this flag in your package's own configuration if it's needed.
 #-flattenpackagehierarchy
 
-# Some classes in the libraries extend package private classes to chare common functionality
-# that isn't explicitly part of the API
--dontskipnonpubliclibraryclasses -dontskipnonpubliclibraryclassmembers
+# Keep classes and methods that have the guava @VisibleForTesting annotation
+-keep @com.google.common.annotations.VisibleForTesting class *
+-keepclassmembers class * {
+@com.google.common.annotations.VisibleForTesting *;
+}
 
 -include proguard_basic_keeps.flags
diff --git a/core/proguard_basic_keeps.flags b/core/proguard_basic_keeps.flags
index 049ce88..0ce81ef 100644
--- a/core/proguard_basic_keeps.flags
+++ b/core/proguard_basic_keeps.flags
@@ -1,3 +1,15 @@
+# see http://sourceforge.net/tracker/?func=detail&aid=2787465&group_id=54750&atid=474707
+-optimizations !code/simplification/arithmetic
+-optimizations !code/simplification/cast
+-allowaccessmodification
+
+# To prevent name conflict in incremental obfuscation.
+-useuniqueclassmembernames
+
+# Some classes in the libraries extend package private classes to chare common functionality
+# that isn't explicitly part of the API
+-dontskipnonpubliclibraryclasses -dontskipnonpubliclibraryclassmembers
+
 # For enumeration classes, see http://proguard.sourceforge.net/manual/examples.html#enumerations
 -keepclassmembers enum * {
     public static **[] values();
@@ -16,12 +28,6 @@
     java.lang.Class class$(java.lang.String, boolean);
 }
 
-# Keep classes and methods that have the guava @VisibleForTesting annotation
--keep @com.google.common.annotations.VisibleForTesting class *
--keepclassmembers class * {
-@com.google.common.annotations.VisibleForTesting *;
-}
-
 # Keep serializable classes and necessary members for serializable classes
 # Copied from the ProGuard manual at http://proguard.sourceforge.net.
 -keepnames class * implements java.io.Serializable
diff --git a/core/tasks/cts.mk b/core/tasks/cts.mk
index 5b041d6..9154f32 100644
--- a/core/tasks/cts.mk
+++ b/core/tasks/cts.mk
@@ -81,13 +81,15 @@
 endef
 
 CORE_INTERMEDIATES :=$(call intermediates-dir-for,JAVA_LIBRARIES,core,,COMMON)
+CONSCRYPT_INTERMEDIATES :=$(call intermediates-dir-for,JAVA_LIBRARIES,conscrypt,,COMMON)
 BOUNCYCASTLE_INTERMEDIATES :=$(call intermediates-dir-for,JAVA_LIBRARIES,bouncycastle,,COMMON)
 APACHEXML_INTERMEDIATES :=$(call intermediates-dir-for,JAVA_LIBRARIES,apache-xml,,COMMON)
+OKHTTP_INTERMEDIATES :=$(call intermediates-dir-for,JAVA_LIBRARIES,okhttp,,COMMON)
 SQLITEJDBC_INTERMEDIATES :=$(call intermediates-dir-for,JAVA_LIBRARIES,sqlite-jdbc,,COMMON)
 JUNIT_INTERMEDIATES :=$(call intermediates-dir-for,JAVA_LIBRARIES,core-junit,,COMMON)
 CORETESTS_INTERMEDIATES :=$(call intermediates-dir-for,JAVA_LIBRARIES,core-tests,,COMMON)
 
-GEN_CLASSPATH := $(CORE_INTERMEDIATES)/classes.jar:$(BOUNCYCASTLE_INTERMEDIATES)/classes.jar:$(APACHEXML_INTERMEDIATES)/classes.jar:$(JUNIT_INTERMEDIATES)/classes.jar:$(SQLITEJDBC_INTERMEDIATES)/javalib.jar:$(CORETESTS_INTERMEDIATES)/javalib.jar
+GEN_CLASSPATH := $(CORE_INTERMEDIATES)/classes.jar:$(CONSCRYPT_INTERMEDIATES)/classes.jar:$(BOUNCYCASTLE_INTERMEDIATES)/classes.jar:$(APACHEXML_INTERMEDIATES)/classes.jar:$(OKHTTP_INTERMEDIATES)/classes.jar:$(JUNIT_INTERMEDIATES)/classes.jar:$(SQLITEJDBC_INTERMEDIATES)/javalib.jar:$(CORETESTS_INTERMEDIATES)/javalib.jar
 
 CTS_CORE_XMLS := \
 	$(CTS_TESTCASES_OUT)/android.core.tests.libcore.package.dalvik.xml \
@@ -103,7 +105,7 @@
 # build system requires that dependencies use javalib.jar.  If
 # javalib.jar is up-to-date, then classes.jar is as well.  Depending
 # on classes.jar will build the files incorrectly.
-$(CTS_CORE_XMLS): $(CTS_CORE_CASES) $(HOST_OUT_JAVA_LIBRARIES)/descGen.jar $(CORE_INTERMEDIATES)/javalib.jar $(BOUNCYCASTLE_INTERMEDIATES)/javalib.jar $(APACHEXML_INTERMEDIATES)/javalib.jar $(SQLITEJDBC_INTERMEDIATES)/javalib.jar $(JUNIT_INTERMEDIATES)/javalib.jar $(CORETESTS_INTERMEDIATES)/javalib.jar | $(ACP)
+$(CTS_CORE_XMLS): $(CTS_CORE_CASES) $(HOST_OUT_JAVA_LIBRARIES)/descGen.jar $(CORE_INTERMEDIATES)/javalib.jar $(BOUNCYCASTLE_INTERMEDIATES)/javalib.jar $(APACHEXML_INTERMEDIATES)/javalib.jar $(OKHTTP_INTERMEDIATES)/javalib.jar $(SQLITEJDBC_INTERMEDIATES)/javalib.jar $(JUNIT_INTERMEDIATES)/javalib.jar $(CORETESTS_INTERMEDIATES)/javalib.jar | $(ACP)
 	$(hide) mkdir -p $(CTS_TESTCASES_OUT)
 	$(call generate-core-test-description,$(CTS_TESTCASES_OUT)/android.core.tests.libcore.package.dalvik,\
 		cts/tests/core/libcore/dalvik/AndroidManifest.xml,\
diff --git a/core/version_defaults.mk b/core/version_defaults.mk
index 5812da0..b9e1456 100644
--- a/core/version_defaults.mk
+++ b/core/version_defaults.mk
@@ -41,7 +41,7 @@
   # which is the version that we reveal to the end user.
   # Update this value when the platform version changes (rather
   # than overriding it somewhere else).  Can be an arbitrary string.
-  PLATFORM_VERSION := 4.3
+  PLATFORM_VERSION := 4.3.2.1.000.000
 endif
 
 ifeq "" "$(PLATFORM_SDK_VERSION)"
diff --git a/target/product/core.mk b/target/product/core.mk
index 0e7aad6..5285ba8 100644
--- a/target/product/core.mk
+++ b/target/product/core.mk
@@ -72,6 +72,7 @@
     libwebrtc_audio_preprocessing \
     mdnsd \
     mms-common \
+    okhttp \
     requestsync \
     telephony-common \
     voip-common
@@ -81,7 +82,9 @@
     PRODUCT_PACKAGES += \
         apache-xml-hostdex \
         bouncycastle-hostdex \
+        conscrypt-hostdex \
         core-hostdex \
+        okhttp-hostdex \
         libcrypto \
         libexpat \
         libicui18n \
diff --git a/target/product/core_minimal.mk b/target/product/core_minimal.mk
index 96a8592..4f4623c 100644
--- a/target/product/core_minimal.mk
+++ b/target/product/core_minimal.mk
@@ -38,6 +38,7 @@
     cacerts \
     com.android.location.provider \
     com.android.location.provider.xml \
+    conscrypt \
     core \
     core-junit \
     dalvikvm \
diff --git a/target/product/mini.mk b/target/product/mini.mk
index 751b481..a1f6317 100644
--- a/target/product/mini.mk
+++ b/target/product/mini.mk
@@ -72,6 +72,7 @@
     cacerts \
     com.android.location.provider \
     com.android.location.provider.xml \
+    conscrypt \
     core \
     core-junit \
     dalvikvm \
@@ -144,6 +145,7 @@
     libz \
     mdnsd \
     network \
+    okhttp \
     pand \
     requestsync \
     screencap \
diff --git a/tools/droiddoc/templates-sac/assets/css/default.css b/tools/droiddoc/templates-sac/assets/css/default.css
index 1ce78fe..11bba80 100644
--- a/tools/droiddoc/templates-sac/assets/css/default.css
+++ b/tools/droiddoc/templates-sac/assets/css/default.css
@@ -1160,6 +1160,53 @@
 tr:first-of-type th:first-of-type:empty {
     visibility: hidden;
 }
+
+/* opcodes table */
+
+table.instruc td:first-child {
+    width: 12%;
+}
+
+table.instruc td:first-child + td {
+    width: 23%;
+}
+
+table.instruc td:first-child + td + td {
+    width: 28%;
+}
+
+table.instruc td:first-child + td + td + td {
+    width: 37%;
+}
+
+/* supplemental opcode format table */
+
+table.supplement td:first-child {
+    width: 20%;
+}
+
+table.supplement td:first-child + td {
+    width: 20%;
+}
+
+table.supplement td:first-child + td + td {
+    width: 60%;
+}
+
+/* math details table */
+
+table.math td:first-child {
+    width: 10%;
+}
+
+table.math td:first-child + td {
+    width: 30%;
+}
+
+table.math td:first-child + td + td {
+    width: 60%;
+}
+
 /* --------------------------------------------------------------------------
 Footer
 */
diff --git a/tools/droiddoc/templates-sdk/assets/css/default.css b/tools/droiddoc/templates-sdk/assets/css/default.css
index 6e72a38..865e850 100644
--- a/tools/droiddoc/templates-sdk/assets/css/default.css
+++ b/tools/droiddoc/templates-sdk/assets/css/default.css
@@ -1754,10 +1754,14 @@
 #qv-wrapper {
   float:right;
   clear:right;
-  margin:-27px 0 0 20px; /* negative top-margin to counter the content-header bottom margin */
+  margin:0 0 0 20px; /* negative top-margin to counter the content-header bottom margin */
   padding:0 0 20px;
 }
 
+#tb-wrapper {
+  margin:-27px 0 0 20px; /* negative top-margin to counter the content-header bottom margin */
+}
+
 #tb,
 #qv {
   font-size:13px;
@@ -2615,39 +2619,66 @@
   background-image: url(../images/styles/disclosure_up.png);
 }
 
-/* notice sidebox link used in Design docs */
-a.notice-developers {
+/* notice box for cross links between Design/Develop docs */
+a.notice-developers,
+a.notice-designers {
   float:right;
-  width:240px;
+  width:238px;
   min-height:50px;
   margin:0 0 20px 20px;
   border:1px solid #ddd;
 }
-a.notice-developers div {
+a.notice-developers div,
+a.notice-designers div {
   min-height:40px;
-  background:url('../images/styles/notice-developers.png') no-repeat 10px 10px;
+  background:url('../images/styles/notice-developers@2x.png') no-repeat 10px 10px;
+  background-size:40px 40px;
   padding:10px 10px 10px 60px;
 }
-a.notice-developers:hover {
+a.notice-designers div {
+  background:url('../images/styles/notice-designers@2x.png') no-repeat 10px 10px;
+  background-size:40px 40px;
+}
+a.notice-developers:hover,
+a.notice-designers:hover {
   background:#eee;
 }
-a.notice-developers h3 {
+a.notice-developers h3,
+a.notice-designers h3 {
   font-size:14px;
   font-weight:normal;
   text-transform:uppercase;
   color:#000 !important;
   margin:0;
 }
-a.notice-developers p {
+a.notice-developers p,
+a.notice-designers p {
   margin:0;
   line-height:16px;
 }
-a.notice-developers.left {
+a.notice-developers.left,
+a.notice-designers.left {
   margin-left:0;
   float:left;
 }
 
 
+/* hide nested list items; companion to hideNestedLists() */
+.hide-nested li ol,
+.hide-nested li ul {
+  display:none;
+}
+
+a.header-toggle {
+  display:block;
+  float:right;
+  text-transform:uppercase;
+  font-size:.8em !important;
+  font-weight:normal;
+  margin-top:2px;
+}
+
+
 /* -----------------------------------------------
 good/bad example containers 
 */
diff --git a/tools/droiddoc/templates-sdk/assets/images/styles/notice-designers.png b/tools/droiddoc/templates-sdk/assets/images/styles/notice-designers.png
new file mode 100644
index 0000000..1fb22a2
--- /dev/null
+++ b/tools/droiddoc/templates-sdk/assets/images/styles/notice-designers.png
Binary files differ
diff --git a/tools/droiddoc/templates-sdk/assets/images/styles/notice-designers@2x.png b/tools/droiddoc/templates-sdk/assets/images/styles/notice-designers@2x.png
new file mode 100644
index 0000000..bc2f74b
--- /dev/null
+++ b/tools/droiddoc/templates-sdk/assets/images/styles/notice-designers@2x.png
Binary files differ
diff --git a/tools/droiddoc/templates-sdk/assets/images/styles/notice-developers.png b/tools/droiddoc/templates-sdk/assets/images/styles/notice-developers.png
index dd04606..a29c31a 100644
--- a/tools/droiddoc/templates-sdk/assets/images/styles/notice-developers.png
+++ b/tools/droiddoc/templates-sdk/assets/images/styles/notice-developers.png
Binary files differ
diff --git a/tools/droiddoc/templates-sdk/assets/images/styles/notice-developers@2x.png b/tools/droiddoc/templates-sdk/assets/images/styles/notice-developers@2x.png
new file mode 100644
index 0000000..d42f537
--- /dev/null
+++ b/tools/droiddoc/templates-sdk/assets/images/styles/notice-developers@2x.png
Binary files differ
diff --git a/tools/droiddoc/templates-sdk/assets/js/docs.js b/tools/droiddoc/templates-sdk/assets/js/docs.js
index f61cf1e..ba65e44 100644
--- a/tools/droiddoc/templates-sdk/assets/js/docs.js
+++ b/tools/droiddoc/templates-sdk/assets/js/docs.js
@@ -898,52 +898,7 @@
 
 
 
-
-
-
-
-
-
-/*
-
-REMEMBER THE PREVIOUS PAGE FOR EACH TAB
-
-function loadLast(cookiePath) {
-  var location = window.location.href;
-  if (location.indexOf("/"+cookiePath+"/") != -1) {
-    return true;
-  }
-  var lastPage = readCookie(cookiePath + "_lastpage");
-  if (lastPage) {
-    window.location = lastPage;
-    return false;
-  }
-  return true;
-}
-
-
-
-$(window).unload(function(){
-  var path = getBaseUri(location.pathname);
-  if (path.indexOf("/reference/") != -1) {
-    writeCookie("lastpage", path, "reference", null);
-  } else if (path.indexOf("/guide/") != -1) {
-    writeCookie("lastpage", path, "guide", null);
-  } else if ((path.indexOf("/resources/") != -1) || (path.indexOf("/training/") != -1)) {
-    writeCookie("lastpage", path, "resources", null);
-  }
-});
-
-*/
-
-
-
-
-
-
-
-
-
+/*      MISC LIBRARY FUNCTIONS     */
 
 
 
@@ -970,9 +925,6 @@
 }
 
 
-
-
-
 function buildToggleLists() {
   $(".toggle-list").each(
     function(i) {
@@ -983,7 +935,19 @@
 
 
 
-
+function hideNestedItems(list, toggle) {
+  $list = $(list);
+  // hide nested lists
+  if($list.hasClass('showing')) {
+    $("li ol", $list).hide('fast');
+    $list.removeClass('showing');
+  // show nested lists
+  } else {
+    $("li ol", $list).show('fast');
+    $list.addClass('showing');
+  }
+  $(".more,.less",$(toggle)).toggle();
+}
 
 
 
diff --git a/tools/releasetools/common.py b/tools/releasetools/common.py
index 263ae11..58582ba 100644
--- a/tools/releasetools/common.py
+++ b/tools/releasetools/common.py
@@ -20,6 +20,7 @@
 import os
 import platform
 import re
+import shlex
 import shutil
 import subprocess
 import sys
@@ -40,6 +41,11 @@
 class Options(object): pass
 OPTIONS = Options()
 OPTIONS.search_path = "out/host/linux-x86"
+OPTIONS.signapk_path = "framework/signapk.jar"  # Relative to search_path
+OPTIONS.extra_signapk_args = []
+OPTIONS.java_path = "java"  # Use the one on the path by default.
+OPTIONS.public_key_suffix = ".x509.pem"
+OPTIONS.private_key_suffix = ".pk8"
 OPTIONS.verbose = False
 OPTIONS.tempfiles = []
 OPTIONS.device_specific = None
@@ -379,6 +385,7 @@
 
   no_passwords = []
   need_passwords = []
+  key_passwords = {}
   devnull = open("/dev/null", "w+b")
   for k in sorted(keylist):
     # We don't need a password for things that aren't really keys.
@@ -386,19 +393,36 @@
       no_passwords.append(k)
       continue
 
-    p = Run(["openssl", "pkcs8", "-in", k+".pk8",
+    p = Run(["openssl", "pkcs8", "-in", k+OPTIONS.private_key_suffix,
              "-inform", "DER", "-nocrypt"],
             stdin=devnull.fileno(),
             stdout=devnull.fileno(),
             stderr=subprocess.STDOUT)
     p.communicate()
     if p.returncode == 0:
+      # Definitely an unencrypted key.
       no_passwords.append(k)
     else:
-      need_passwords.append(k)
+      p = Run(["openssl", "pkcs8", "-in", k+OPTIONS.private_key_suffix,
+               "-inform", "DER", "-passin", "pass:"],
+              stdin=devnull.fileno(),
+              stdout=devnull.fileno(),
+              stderr=subprocess.PIPE)
+      stdout, stderr = p.communicate()
+      if p.returncode == 0:
+        # Encrypted key with empty string as password.
+        key_passwords[k] = ''
+      elif stderr.startswith('Error decrypting key'):
+        # Definitely encrypted key.
+        # It would have said "Error reading key" if it didn't parse correctly.
+        need_passwords.append(k)
+      else:
+        # Potentially, a type of key that openssl doesn't understand.
+        # We'll let the routines in signapk.jar handle it.
+        no_passwords.append(k)
   devnull.close()
 
-  key_passwords = PasswordManager().GetPasswords(need_passwords)
+  key_passwords.update(PasswordManager().GetPasswords(need_passwords))
   key_passwords.update(dict.fromkeys(no_passwords, None))
   return key_passwords
 
@@ -426,11 +450,13 @@
   else:
     sign_name = output_name
 
-  cmd = ["java", "-Xmx2048m", "-jar",
-           os.path.join(OPTIONS.search_path, "framework", "signapk.jar")]
+  cmd = [OPTIONS.java_path, "-Xmx2048m", "-jar",
+         os.path.join(OPTIONS.search_path, OPTIONS.signapk_path)]
+  cmd.extend(OPTIONS.extra_signapk_args)
   if whole_file:
     cmd.append("-w")
-  cmd.extend([key + ".x509.pem", key + ".pk8",
+  cmd.extend([key + OPTIONS.public_key_suffix,
+              key + OPTIONS.private_key_suffix,
               input_name, sign_name])
 
   p = Run(cmd, stdin=subprocess.PIPE, stdout=subprocess.PIPE)
@@ -494,12 +520,14 @@
                  r'private_key="(.*)"$', line)
     if m:
       name, cert, privkey = m.groups()
+      public_key_suffix_len = len(OPTIONS.public_key_suffix)
+      private_key_suffix_len = len(OPTIONS.private_key_suffix)
       if cert in SPECIAL_CERT_STRINGS and not privkey:
         certmap[name] = cert
-      elif (cert.endswith(".x509.pem") and
-            privkey.endswith(".pk8") and
-            cert[:-9] == privkey[:-4]):
-        certmap[name] = cert[:-9]
+      elif (cert.endswith(OPTIONS.public_key_suffix) and
+            privkey.endswith(OPTIONS.private_key_suffix) and
+            cert[:-public_key_suffix_len] == privkey[:-private_key_suffix_len]):
+        certmap[name] = cert[:-public_key_suffix_len]
       else:
         raise ValueError("failed to parse line from apkcerts.txt:\n" + line)
   return certmap
@@ -543,8 +571,10 @@
   try:
     opts, args = getopt.getopt(
         argv, "hvp:s:x:" + extra_opts,
-        ["help", "verbose", "path=", "device_specific=", "extra="] +
-          list(extra_long_opts))
+        ["help", "verbose", "path=", "signapk_path=", "extra_signapk_args=",
+         "java_path=", "public_key_suffix=", "private_key_suffix=",
+         "device_specific=", "extra="] +
+        list(extra_long_opts))
   except getopt.GetoptError, err:
     Usage(docstring)
     print "**", str(err), "**"
@@ -560,6 +590,16 @@
       OPTIONS.verbose = True
     elif o in ("-p", "--path"):
       OPTIONS.search_path = a
+    elif o in ("--signapk_path",):
+      OPTIONS.signapk_path = a
+    elif o in ("--extra_signapk_args",):
+      OPTIONS.extra_signapk_args = shlex.split(a)
+    elif o in ("--java_path",):
+      OPTIONS.java_path = a
+    elif o in ("--public_key_suffix",):
+      OPTIONS.public_key_suffix = a
+    elif o in ("--private_key_suffix",):
+      OPTIONS.private_key_suffix = a
     elif o in ("-s", "--device_specific"):
       OPTIONS.device_specific = a
     elif o in ("-x", "--extra"):
diff --git a/tools/releasetools/sign_target_files_apks b/tools/releasetools/sign_target_files_apks
index eaad8a4..9fb1008 100755
--- a/tools/releasetools/sign_target_files_apks
+++ b/tools/releasetools/sign_target_files_apks
@@ -208,7 +208,7 @@
   try:
     keylist = input_tf_zip.read("META/otakeys.txt").split()
   except KeyError:
-    raise ExternalError("can't read META/otakeys.txt from input")
+    raise common.ExternalError("can't read META/otakeys.txt from input")
 
   extra_recovery_keys = misc_info.get("extra_recovery_keys", None)
   if extra_recovery_keys:
@@ -223,7 +223,7 @@
   for k in keylist:
     m = re.match(r"^(.*)\.x509\.pem$", k)
     if not m:
-      raise ExternalError("can't parse \"%s\" from META/otakeys.txt" % (k,))
+      raise common.ExternalError("can't parse \"%s\" from META/otakeys.txt" % (k,))
     k = m.group(1)
     mapped_keys.append(OPTIONS.key_map.get(k, k) + ".x509.pem")
 
@@ -247,7 +247,7 @@
                  stdout=subprocess.PIPE)
   data, _ = p.communicate()
   if p.returncode != 0:
-    raise ExternalError("failed to run dumpkeys")
+    raise common.ExternalError("failed to run dumpkeys")
   common.ZipWriteStr(output_tf_zip, "RECOVERY/RAMDISK/res/keys", data)
 
   # SystemUpdateActivity uses the x509.pem version of the keys, but