diff --git a/deploy-chunked.sh b/deploy-chunked.sh
index 06c3e38..94358cb 100644
--- a/deploy-chunked.sh
+++ b/deploy-chunked.sh
@@ -45,6 +45,11 @@ CF_SKIP_SSL="false"  # Use "true" for self-signed certificates
 POLL_INTERVAL=5   # seconds between status checks
 MAX_WAIT=600      # maximum wait time in seconds (10 minutes)
 
+# Security configuration (optional)
+CERT_FILE=""                    # Path to client certificate file (leave empty to skip)
+X_FORWARDED_FOR=""             # X-Forwarded-For header value (leave empty to skip)
+MY_APIM_KEY=""                 # My-APIM-KEY header value (leave empty to skip)
+
 #############################################################################
 # SCRIPT - Do not modify below this line
 #############################################################################
@@ -90,6 +95,24 @@ if ! command -v curl &> /dev/null; then
     exit 1
 fi
 
+# Build curl options based on configuration
+CURL_OPTS=""
+if [ -n "$CERT_FILE" ]; then
+    if [ ! -f "$CERT_FILE" ]; then
+        log_error "Certificate file not found: $CERT_FILE"
+        exit 1
+    fi
+    CURL_OPTS="$CURL_OPTS --cert $CERT_FILE"
+fi
+
+if [ -n "$X_FORWARDED_FOR" ]; then
+    CURL_OPTS="$CURL_OPTS -H \"X-Forwarded-For: $X_FORWARDED_FOR\""
+fi
+
+if [ -n "$MY_APIM_KEY" ]; then
+    CURL_OPTS="$CURL_OPTS -H \"My-APIM-KEY: $MY_APIM_KEY\""
+fi
+
 # Build CF configuration JSON
 CF_CONFIG=$(cat <<EOF
 {
@@ -115,9 +138,10 @@ echo ""
 #############################################################################
 log_info "Step 1/5: Initializing upload session..."
 
-INIT_RESPONSE=$(curl -s -X POST "$API_BASE/upload/init" \
+INIT_RESPONSE=$(eval curl -s -X POST "$API_BASE/upload/init" \
   -H "Content-Type: application/json" \
-  -d "$CF_CONFIG")
+  $CURL_OPTS \
+  -d "'$CF_CONFIG'")
 
 if [ $? -ne 0 ]; then
     log_error "Failed to initialize upload session"
@@ -152,7 +176,7 @@ upload_file_in_chunks() {
   fi
 
   local total_chunks=$(( ($file_size + $CHUNK_SIZE - 1) / $CHUNK_SIZE ))
-  local file_size_mb=$(echo "scale=2; $file_size / 1048576" | bc)
+  local file_size_mb=$(awk "BEGIN {printf \"%.2f\", $file_size / 1048576}")
 
   log_info "Uploading $file_type: $file_name (${file_size_mb}MB, $total_chunks chunks)"
 
@@ -166,7 +190,8 @@ upload_file_in_chunks() {
   for chunk_file in "$temp_dir"/chunk_*; do
     printf "  Chunk %3d/%3d... " "$((chunk_index + 1))" "$total_chunks"
 
-    RESPONSE=$(curl -s -X POST "$API_BASE/upload/chunk" \
+    RESPONSE=$(eval curl -s -X POST "$API_BASE/upload/chunk" \
+      $CURL_OPTS \
       -F "uploadSessionId=$SESSION_ID" \
       -F "fileType=$file_type" \
       -F "chunkIndex=$chunk_index" \
@@ -211,7 +236,8 @@ upload_file_in_chunks "$MANIFEST_FILE" "manifest"
 #############################################################################
 log_info "Step 4/5: Starting async deployment..."
 
-FINALIZE_RESPONSE=$(curl -s -X POST "$API_BASE/upload/finalize?uploadSessionId=$SESSION_ID&async=true")
+FINALIZE_RESPONSE=$(eval curl -s -X POST "$API_BASE/upload/finalize?uploadSessionId=$SESSION_ID&async=true" \
+  $CURL_OPTS)
 STATUS=$(echo "$FINALIZE_RESPONSE" | grep -o '"status":"[^"]*' | cut -d'"' -f4)
 
 if [ "$STATUS" != "IN_PROGRESS" ]; then
@@ -234,7 +260,8 @@ while [ $elapsed -lt $MAX_WAIT ]; do
   sleep $POLL_INTERVAL
   elapsed=$((elapsed + POLL_INTERVAL))
 
-  STATUS_RESPONSE=$(curl -s "$API_BASE/deployment/status/$SESSION_ID" 2>/dev/null)
+  STATUS_RESPONSE=$(eval curl -s "$API_BASE/deployment/status/$SESSION_ID" \
+    $CURL_OPTS 2>/dev/null)
 
   if [ $? -ne 0 ]; then
     log_warning "Failed to fetch status, retrying..."