Create Caesar-Cipher.py

Author: rogers-cyber

43-Text-encryption-decryption/Caesar-Cipher.py

@@ -0,0 +1,151 @@
+import sys
+import os
+import tkinter as tk
+from tkinter import messagebox
+
+# =========================
+# THEME
+# =========================
+APP_BG = "#121212"
+PANEL_BG = "#1F1F1F"
+BTN_BG = "#2C2C2C"
+ACCENT = "#FF6F61"
+TEXT_CLR = "#E0E0E0"
+SUBTEXT_CLR = "#AAAAAA"
+
+FONT = ("Segoe UI", 11)
+
+# =========================
+# APP
+# =========================
+class CaesarCipherApp:
+    def __init__(self, root):
+        self.root = root
+        root.title("MateTools – Caesar Cipher")
+        root.geometry("800x500")
+        root.configure(bg=APP_BG)
+        root.resizable(False, False)
+
+        # =========================
+        # LEFT PANEL
+        # =========================
+        left = tk.Frame(root, bg=PANEL_BG, width=350)
+        left.pack(side="left", fill="y")
+
+        header = tk.Frame(left, bg=PANEL_BG)
+        header.pack(fill="x", padx=16, pady=(18, 10))
+
+        tk.Label(
+            header,
+            text="MateTools",
+            bg=PANEL_BG,
+            fg=ACCENT,
+            font=("Segoe UI", 20, "bold")
+        ).pack(side="left")
+
+        tk.Frame(left, bg=ACCENT, height=2).pack(fill="x", padx=16, pady=(0, 14))
+
+        tk.Label(
+            left,
+            text="Caesar Cipher Tool",
+            bg=PANEL_BG,
+            fg=TEXT_CLR,
+            font=("Segoe UI", 14, "bold")
+        ).pack(anchor="w", padx=16, pady=(0, 2))
+
+        tk.Label(
+            left,
+            text="Encrypt or decrypt text using Caesar cipher",
+            bg=PANEL_BG,
+            fg=SUBTEXT_CLR,
+            font=("Segoe UI", 10)
+        ).pack(anchor="w", padx=16, pady=(0, 16))
+
+        tk.Frame(left, bg=BTN_BG, height=1).pack(fill="x", padx=16, pady=(0, 16))
+
+        # =========================
+        # INPUT
+        # =========================
+        tk.Label(left, text="Enter Text:", bg=PANEL_BG, fg=TEXT_CLR, font=FONT).pack(anchor="w", padx=16)
+        self.input_text = tk.Text(left, height=5, width=40, bg="#1E1E1E", fg=TEXT_CLR, font=FONT)
+        self.input_text.pack(padx=16, pady=(0, 10))
+
+        tk.Label(left, text="Shift:", bg=PANEL_BG, fg=TEXT_CLR, font=FONT).pack(anchor="w", padx=16)
+        self.shift_var = tk.IntVar(value=3)
+        tk.Entry(left, textvariable=self.shift_var, bg="#1E1E1E", fg=TEXT_CLR, font=FONT, width=5).pack(padx=16, pady=(0, 16))
+
+        # =========================
+        # BUTTONS
+        # =========================
+        btn_frame = tk.Frame(left, bg=PANEL_BG)
+        btn_frame.pack(fill="x", padx=16, pady=16)
+
+        def make_btn(text, cmd, color=BTN_BG):
+            return tk.Button(
+                btn_frame,
+                text=text,
+                command=cmd,
+                bg=color,
+                fg="white",
+                font=("Segoe UI", 11, "bold"),
+                relief="flat",
+                height=2,
+                width=18
+            )
+
+        make_btn("Encrypt", self.encrypt_text, ACCENT).pack(side="left", expand=True, padx=4)
+        make_btn("Decrypt", self.decrypt_text, "#4CAF50").pack(side="left", expand=True, padx=4)
+
+        # =========================
+        # RIGHT PANEL
+        # =========================
+        right = tk.Frame(root, bg=APP_BG)
+        right.pack(side="right", fill="both", expand=True)
+
+        self.output_card = tk.Frame(right, bg=PANEL_BG)
+        self.output_card.pack(padx=30, pady=40, fill="both", expand=True)
+
+        tk.Label(
+            self.output_card,
+            text="Output",
+            bg=PANEL_BG,
+            fg=TEXT_CLR,
+            font=("Segoe UI", 14, "bold")
+        ).pack(pady=(20, 10))
+
+        self.output_text = tk.Text(self.output_card, height=10, bg="#1E1E1E", fg=TEXT_CLR, font=FONT)
+        self.output_text.pack(padx=16, pady=10, fill="both", expand=True)
+
+    # =========================
+    # METHODS
+    # =========================
+    def encrypt_text(self):
+        text = self.input_text.get("1.0", tk.END).strip()
+        shift = self.shift_var.get()
+        self.output_text.delete("1.0", tk.END)
+        self.output_text.insert(tk.END, self.caesar_cipher(text, shift))
+
+    def decrypt_text(self):
+        text = self.input_text.get("1.0", tk.END).strip()
+        shift = self.shift_var.get()
+        self.output_text.delete("1.0", tk.END)
+        self.output_text.insert(tk.END, self.caesar_cipher(text, -shift))
+
+    def caesar_cipher(self, text, shift):
+        result = ""
+        for char in text:
+            if char.isupper():
+                result += chr((ord(char) - 65 + shift) % 26 + 65)
+            elif char.islower():
+                result += chr((ord(char) - 97 + shift) % 26 + 97)
+            else:
+                result += char
+        return result
+
+# =========================
+# RUN
+# =========================
+if __name__ == "__main__":
+    root = tk.Tk()
+    CaesarCipherApp(root)
+    root.mainloop()