diff --git a/ClickToFlash.xcodeproj/project.pbxproj b/ClickToFlash.xcodeproj/project.pbxproj
index 8ce0316a..c7355e70 100755
--- a/ClickToFlash.xcodeproj/project.pbxproj
+++ b/ClickToFlash.xcodeproj/project.pbxproj
@@ -47,6 +47,7 @@
 		69A26D0C0F302C10006648BC /* NSBezierPath-RoundedRectangle.m in Sources */ = {isa = PBXBuildFile; fileRef = 69A26D0B0F302C10006648BC /* NSBezierPath-RoundedRectangle.m */; };
 		79166CBD0FF69E1800B1F69B /* CTGradient.m in Sources */ = {isa = PBXBuildFile; fileRef = 79166CBB0FF69E1800B1F69B /* CTGradient.m */; };
 		79A21C4D0F30B735009424B8 /* CTFWhitelistWindowController.m in Sources */ = {isa = PBXBuildFile; fileRef = 79A21C490F30B735009424B8 /* CTFWhitelistWindowController.m */; };
+		79B1F5C0105D9CEE0081D0B0 /* dsa_pub.pem in Resources */ = {isa = PBXBuildFile; fileRef = 79B1F5BF105D9CEE0081D0B0 /* dsa_pub.pem */; };
 		79C040700FF1CCE6002DA6A5 /* Sparkle.framework in CopyFiles */ = {isa = PBXBuildFile; fileRef = 79A060EB0FF1CBF50035F03A /* Sparkle.framework */; };
 		79E2EB930F86AAD3005CF170 /* SparkleManager.m in Sources */ = {isa = PBXBuildFile; fileRef = 79E2EB920F86AAD3005CF170 /* SparkleManager.m */; };
 		844695F70F470D1F00DC783A /* CTFsIFRSupport.m in Sources */ = {isa = PBXBuildFile; fileRef = 844695910F46FC6600DC783A /* CTFsIFRSupport.m */; };
@@ -147,6 +148,7 @@
 		79475E0C0F658D9A00FD82E3 /* Sparkle.xcodeproj */ = {isa = PBXFileReference; lastKnownFileType = "wrapper.pb-project"; name = Sparkle.xcodeproj; path = Plugin/Sparkle/Sparkle.xcodeproj; sourceTree = "<group>"; };
 		79A21C490F30B735009424B8 /* CTFWhitelistWindowController.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; name = CTFWhitelistWindowController.m; path = Plugin/CTFWhitelistWindowController.m; sourceTree = "<group>"; };
 		79A21C4A0F30B735009424B8 /* CTFWhitelistWindowController.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = CTFWhitelistWindowController.h; path = Plugin/CTFWhitelistWindowController.h; sourceTree = "<group>"; };
+		79B1F5BF105D9CEE0081D0B0 /* dsa_pub.pem */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text; name = dsa_pub.pem; path = Plugin/dsa_pub.pem; sourceTree = "<group>"; };
 		79E2EB910F86AAD3005CF170 /* SparkleManager.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = SparkleManager.h; path = Plugin/SparkleManager.h; sourceTree = "<group>"; };
 		79E2EB920F86AAD3005CF170 /* SparkleManager.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; name = SparkleManager.m; path = Plugin/SparkleManager.m; sourceTree = "<group>"; };
 		844695900F46FC6600DC783A /* CTFsIFRSupport.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = CTFsIFRSupport.h; path = Plugin/CTFsIFRSupport.h; sourceTree = "<group>"; };
@@ -225,6 +227,7 @@
 				072189BA0F30D9C3008C8944 /* ContextualMenu.xib */,
 				072189BC0F30D9C3008C8944 /* WhitelistPanel.xib */,
 				A494CC2B0F9F2446007D5EEB /* ctf.icns */,
+				79B1F5BF105D9CEE0081D0B0 /* dsa_pub.pem */,
 				D9566C2B0F37EA0800358646 /* deSIFR Resources */,
 			);
 			indentWidth = 4;
@@ -368,6 +371,7 @@
 				6953E43C0F3EDEB50014ECF7 /* MenubarMenu.xib in Resources */,
 				A494CC2C0F9F2446007D5EEB /* ctf.icns in Resources */,
 				00FBE92F0FCD68CE00BC0995 /* NSActionTemplate.png in Resources */,
+				79B1F5C0105D9CEE0081D0B0 /* dsa_pub.pem in Resources */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
@@ -492,7 +496,7 @@
 				GCC_TREAT_WARNINGS_AS_ERRORS = YES;
 				GCC_WARN_ABOUT_MISSING_PROTOTYPES = YES;
 				GCC_WARN_SIGN_COMPARE = YES;
-				PRODUCT_VERSION = 1.5.1;
+				PRODUCT_VERSION = 1.5.2;
 				WARNING_CFLAGS = "-Wall";
 			};
 			name = Debug;
@@ -505,7 +509,7 @@
 				GCC_TREAT_WARNINGS_AS_ERRORS = YES;
 				GCC_WARN_ABOUT_MISSING_PROTOTYPES = YES;
 				GCC_WARN_SIGN_COMPARE = YES;
-				PRODUCT_VERSION = 1.5.1;
+				PRODUCT_VERSION = 1.5.2;
 				WARNING_CFLAGS = "-Wall";
 			};
 			name = Release;
diff --git a/Installer/build_installer_pkg.command b/Installer/build_installer_pkg.command
index 18eb160c..5ce68484 100755
--- a/Installer/build_installer_pkg.command
+++ b/Installer/build_installer_pkg.command
@@ -52,6 +52,10 @@ cp -R "$BUILT_PLUGIN" "$MY_INSTALLER_ROOT"
 # Stuff it into a .zip.
 cd "$BUILT_PRODUCTS_DIR"
 zip -r "$VERSIONED_NAME.zip" "ClickToFlash.pkg"
-cd $SCRIPT_WD
+
+if [ -f "$HOME/Documents/releases/ClickToFlash/dsa_priv.pem" ]; then
+	`openssl dgst -sha1 -binary < "$VERSIONED_NAME.zip" | openssl dgst -dss1 -sign "$HOME/Documents/releases/ClickToFlash/dsa_priv.pem" | openssl enc -base64 > $VERSIONED_NAME.dsaSignature`
+fi
+cd "$SCRIPT_WD"
 
 rm -rf "$MY_INSTALLER_ROOT"
diff --git a/Plugin/Info-Plugin.plist b/Plugin/Info-Plugin.plist
index 23e0a5a9..8c82771b 100644
--- a/Plugin/Info-Plugin.plist
+++ b/Plugin/Info-Plugin.plist
@@ -24,6 +24,8 @@
 	<string>${PRODUCT_VERSION}</string>
 	<key>NSPrincipalClass</key>
 	<string>CTFClickToFlashPlugin</string>
+	<key>SUPublicDSAKeyFile</key>
+	<string>dsa_pub.pem</string>
 	<key>SUFeedURL</key>
 	<string>http://rentzsch.github.com/clicktoflash/release_notes/appcast.xml</string>
     <!--<string>http://rentzsch.github.com/clicktoflash/release_notes/appcast_distantfuture.xml</string>-->
diff --git a/Plugin/dsa_pub.pem b/Plugin/dsa_pub.pem
new file mode 100644
index 00000000..c27bb9a5
--- /dev/null
+++ b/Plugin/dsa_pub.pem
@@ -0,0 +1,20 @@
+-----BEGIN PUBLIC KEY-----
+MIIDOjCCAi0GByqGSM44BAEwggIgAoIBAQCMqjpsWIy6jB/a4+NBg4hA8m7Fz7de
+Z8S2RNqurpTldAjpN/0WDjKZkpKglqox4IZnwdkFACacvkEIX86JbOTvfy4+6fW8
+jquM7h0ZrBoBDkh9uEHHaZg/qPIdwFdc8kA+s8pPPsirDiGEPp+pa0APlWqL3hjs
+aCmy28J5EffmOQ5bf9O7H+n6CPl4faYWFqz8gmTlSp+whabPfN0BFLeikqK9h+dJ
+Al9KJcSZVCX/sI9E2/hu9mL9clrQrWFPy9FcD0cHB8uFczK21FUKDLCPer4gXkOp
+mG7Prda/j/DSz0/yd6CzRAsF3PiM0pQep0aYAJrLAZSY8+cwymVQKYIxAhUA8V+G
+B0YwsVc0HAUt/2lSiZBIYgkCggEAN2bDOjTJBykYVnIVfuomrjXsVMe0T/1LD7F8
+cE/XzUUMhYUD0t9Nu5kupRy/0mWJ56Sgy3Jdl/Oh+AQ18BkuX2j9+W6JR8NDCAfD
+N/mKq+2teomTRc04q9iQnPmKHE+cctSU8peYXOIFvywGZNFwfLlrgMboiHcAU442
+7eFITWSZ7/ZG2IXmuMRpTON+7CVGmgRJTgUNh295FFLSUPgor3ptmmSoO9yiKX1s
++yPbnAYrgRfyY8TfizvmBCuBctt6y+unajMDKVn7wtCveUyP10zO4UW3hr53Nue/
+TY4jRWhHT4UZDeQask6T2yW3X3dYI4JbpkADiBDExbiJhcwpmAOCAQUAAoIBADT7
+Hfvhdn5krZ4sNqdkrU+Uuj31Q7Kj2dPu8bqCCPBt/E/cozKPan1NIxNKEnjRAEYE
+lKE+jPAcghMl7cOpe1ngM/IZBp4pb/ddRtH1VsHrnmL8q573+ZRb3oF/I7FyMXKj
+D0YQO/Ml8ZNPaOehaq2EF0lyLpBKnSY4Ej5UoxivpKG582oiEVQ1+DgKLRHQENXp
+u1B/ryFyWer+9QvcOITbBFrd56le6kQHFOyURuRJ0L834e3xH8bwI8G3U/PT4nI8
+qmXSSH1VixBQ2TeXR4CKlcl4d+uE1ZOPU2J6ovo3RBkTvHxgvWWDD2ji0MzuQCee
+XxnQylaLLkDrk25fZBo=
+-----END PUBLIC KEY-----