diff --git a/mksboot.sh b/mksboot.sh
new file mode 100755
index 0000000..e06d4cc
--- /dev/null
+++ b/mksboot.sh
@@ -0,0 +1,89 @@
+#!/bin/bash
+
+#code signer v2.4
+CODE_SIGNER="$PREBUILT_DIR/codesigner_v24"
+
+#OEM Private Key
+OEM_PRIV_KEY_NAME="$PREBUILT_DIR/sign_keys/a520_b2b_V24.prv"
+OEM_PUB_KEY_NAME="$PREBUILT_DIR/sign_keys/a520_b2b_V24.spk"
+
+#u-boot infomation
+UBOOT_NAME=u-boot.bin
+UBOOT_PADD_NAME=u-boot-dtb_padd.bin
+UBOOT_TARGET_BIN=sboot-dtb.bin
+
+#bl2 information
+BL2_NAME=espresso3250-spl.bin
+BL2_TARGET_BIN=sespresso3250-spl.bin
+
+OUTPUT_DIR=$1
+
+U_BOOT_SIZE_KB=1024
+SIG_SIZE_B=256
+
+U_BOOT_SIZE_B=`expr $U_BOOT_SIZE_KB \* 1024`
+U_BOOT_PADD_B=`expr $U_BOOT_SIZE_B \- 256`
+
+pushd $OUTPUT_DIR
+
+#Add Zero Padding
+#---------------------------------------------
+#u-boot: Add padding(0x00) to u-boot image.
+cp $UBOOT_NAME $UBOOT_PADD_NAME
+truncate -s $U_BOOT_PADD_B $UBOOT_PADD_NAME
+#--------------------------------------------
+
+#Add Signature
+#------------------------------------------------------------------------------------------------------------
+#u-boot: Add signature(256B) to the end of input binary.
+$CODE_SIGNER -STAGE2 -IMGMAKE -infile=$UBOOT_PADD_NAME -outfile=$UBOOT_TARGET_BIN -pri=$OEM_PRIV_KEY_NAME
+
+#bl2: Add signature(256B) to the end of input binary.
+$CODE_SIGNER -STAGE2 -IMGMAKE -infile=$BL2_NAME -outfile=$BL2_TARGET_BIN -pri=$OEM_PRIV_KEY_NAME
+#------------------------------------------------------------------------------------------------------------
+
+
+#Verifying signature
+#-----------------------------------------------------------------------------------
+#u-boot: Verify added signature with OEM public key.
+$CODE_SIGNER -STAGE2 -VERIFY -infile=$UBOOT_TARGET_BIN -pub=$OEM_PUB_KEY_NAME
+
+if [ $? -ne 0 ]; then
+	if [ -f "$UBOOT_PADD_NAME" ]; then
+		rm -rf $UBOOT_PADD_NAME
+	fi
+	if [ -f "$UBOOT_TARGET_BIN" ]; then
+		rm -rf $UBOOT_TARGET_BIN
+	fi
+	echo "### u-boot verification: Failed ###"
+else
+	echo "### u-boot verification: Success ###"
+	cp $UBOOT_TARGET_BIN $UBOOT_NAME
+	if [ -f "$UBOOT_PADD_NAME" ]; then
+		rm -rf $UBOOT_PADD_NAME
+	fi
+	if [ -f "$UBOOT_TARGET_BIN" ]; then
+		rm -rf $UBOOT_TARGET_BIN
+	fi
+
+fi
+
+#bl2: Verify added signature with OEM public key.
+$CODE_SIGNER -STAGE2 -VERIFY -infile=$BL2_TARGET_BIN -pub=$OEM_PUB_KEY_NAME
+
+if [ $? -ne 0 ]; then
+	if [ -f "$BL2_TARGET_BIN" ]; then
+		rm -rf $BL2_TARGET_BIN
+	fi
+	echo "### bl2 verification: Failed ###"
+else
+	echo "### bl2 verification: Success ###"
+	cp $BL2_TARGET_BIN $BL2_NAME
+	if [ -f "$BL2_TARGET_BIN" ]; then
+		rm -rf $BL2_TARGET_BIN
+	fi
+
+fi
+#-----------------------------------------------------------------------------------
+
+popd
diff --git a/release.sh b/release.sh
index 657ff1e..702b364 100755
--- a/release.sh
+++ b/release.sh
@@ -4,6 +4,7 @@ set -e
 
 FULL_BUILD=false
 VERIFIED_BOOT=false
+SECURE_BOOT=false
 VBOOT_KEYDIR=
 VBOOT_ITS=
 SKIP_CLEAN=
@@ -65,6 +66,9 @@ parse_options()
 			--local-rootfs)
 				LOCAL_ROOTFS="$2"
 				shift ;;
+			--sboot)
+				SECURE_BOOT=true
+				shift ;;
 			--vboot)
 				VERIFIED_BOOT=true
 				shift ;;
@@ -144,7 +148,7 @@ gen_artik_release
 
 if $VERIFIED_BOOT ; then
 	if [ "$VBOOT_ITS" == "" ]; then
-		VBOOT_ITS=$PREBUILT_DIR/$TARGET_BOARD/kernel_fit_verify.its
+		VBOOT_ITS=$PREBUILT_DIR/kernel_fit_verify.its
 	fi
 	if [ "$VBOOT_KEYDIR" == "" ]; then
 		echo "Please specify key directory using --vboot-keydir"
@@ -153,6 +157,10 @@ if $VERIFIED_BOOT ; then
 	./mkvboot.sh $TARGET_DIR $VBOOT_KEYDIR $VBOOT_ITS
 fi
 
+if $SECURE_BOOT ; then
+	./mksboot.sh $TARGET_DIR
+fi
+
 ./mksdboot.sh $MICROSD_IMAGE
 
 ./mkbootimg.sh