TLS and Graphics, what more?

README.md

@@ -24,6 +24,14 @@ Requires **Java 11 or higher** (Java 11, 17, 21+):
 # Launch interactive GUI
 java -jar j3270.jar
 
+# Connect to TLS/SSL mainframe with custom port
+java -jar j3270.jar -s mainframe.example.com 992
+# Or using standard x3270 L: prefix
+java -jar j3270.jar L:mainframe.example.com:992
+
+# Connect with unverified/self-signed certificate verification bypass
+java -jar j3270.jar --tls --insecure mainframe.example.com 992
+
 # Launch with custom configuration file
 java -jar j3270.jar -c config.ini
 
@@ -36,6 +44,10 @@ java -jar j3270.jar -c config.ini
 ## ✨ Features
 
 - **TN3270 & TN3270E Protocol Support**: RFC 2355 compliant state machine, negotiation, Device-Type query, and SSL/TLS encryption.
+- **SSL/TLS Security**:
+  - Encrypted TN3270 over TLS connections on standard port `992` or custom ports.
+  - Interactive certificate verification prompt for self-signed or untrusted certificates with fingerprint, subject, issuer, and validity inspection.
+  - Optional unverified/insecure mode for testing and headless scripting.
 - **IND$FILE File Transfer**: Full support for both **CUT** and **DFT (DDM)** high-speed structured field transfers with ASCII/binary translation, CRLF handling, and recfm/lrecl formatting for TSO, VM/CMS, and CICS.
 - **z/VM & Line-Mode Support**: Proper SSCP-LU and unformatted line handling (`CP TERM CONMODE 3270` supported).
 - **APL & Graphic Escape**: Comprehensive box-drawing and math symbol character rendering.
@@ -59,7 +71,7 @@ The project includes self-contained, portable build scripts:
 # Build executable JAR in 2 seconds:
 sh ./build_all.sh
 
-# Run all 25 automated unit tests in ~130ms:
+# Run all 31 automated unit tests in ~180ms:
 sh ./test_all.sh
 ```