import tkinter as tk
from tkinter import messagebox
from Crypto.Cipher import AES, Blowfish
import binascii

class NavicatPassword:
    def __init__(self, version=12):
        self.version = version
        self.aes_key = b'libcckeylibcckey'
        self.aes_iv = b'libcciv libcciv '
        self.blow_key = b'\x3D\xC5\xCA\x39'
        self.blow_iv = b'\xD9\xC7\xC3\xC8\x87\x0D\x64\xBD'

    def decrypt(self, encrypted_str):
        if self.version == 11:
            return self.decrypt_eleven(encrypted_str)
        elif self.version == 12:
            return self.decrypt_twelve(encrypted_str)
        return None

    def decrypt_eleven(self, encrypted_str):
        data = binascii.unhexlify(encrypted_str.lower())
        result = b''
        iv = self.blow_iv
        
        for i in range(0, len(data), 8):
            block = data[i:i+8]
            decrypted = self.blowfish_decrypt(block)
            result += self.xor_bytes(decrypted, iv)
            iv = self.xor_bytes(iv, block)
            
        return result.decode('utf-8')

    def decrypt_twelve(self, encrypted_str):
        data = binascii.unhexlify(encrypted_str.lower())
        cipher = AES.new(self.aes_key, AES.MODE_CBC, self.aes_iv)
        return cipher.decrypt(data).decode('utf-8').rstrip('\x00')

    def blowfish_decrypt(self, data):
        cipher = Blowfish.new(self.blow_key, Blowfish.MODE_ECB)
        return cipher.decrypt(data)

    def xor_bytes(self, a, b):
        return bytes([x ^ y for x, y in zip(a, b)])

class App:
    def __init__(self, root):
        self.root = root
        self.root.title("Navicat密码解密工具")
        
        self.version = tk.IntVar(value=12)
        self.password = tk.StringVar()
        
        self.create_widgets()

    def create_widgets(self):
        tk.Label(self.root, text="Navicat版本:").grid(row=0, column=0, padx=5, pady=5)
        tk.Radiobutton(self.root, text="11", variable=self.version, value=11).grid(row=0, column=1, sticky="w")
        tk.Radiobutton(self.root, text="12", variable=self.version, value=12).grid(row=0, column=2, sticky="w")
        
        tk.Label(self.root, text="加密密码:").grid(row=1, column=0, padx=5, pady=5)
        tk.Entry(self.root, textvariable=self.password, width=30).grid(row=1, column=1, columnspan=2)
        
        tk.Button(self.root, text="解密", command=self.decrypt_password).grid(row=2, column=1, pady=10)
        
    def decrypt_password(self):
        password = self.password.get().strip()
        if not password:
            messagebox.showerror("错误", "请输入加密密码")
            return
            
        try:
            navicat = NavicatPassword(self.version.get())
            result = navicat.decrypt(password)
            messagebox.showinfo("解密结果", f"解密后的密码是：\n{result}")
        except Exception as e:
            messagebox.showerror("错误", f"解密失败：{str(e)}")

if __name__ == "__main__":
    root = tk.Tk()
    app = App(root)
    root.mainloop()