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encry_decry.py
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encry_decry.py
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import sys
import os
from PyQt5.QtWidgets import (
QApplication,
QMainWindow,
QWidget,
QVBoxLayout,
QHBoxLayout,
QLabel,
QLineEdit,
QPushButton,
QTextEdit,
QFileDialog,
QMessageBox,
)
from PyQt5.QtGui import QFont, QColor, QPalette
from PyQt5.QtCore import Qt
class EncryptionDecryptionApp(QMainWindow):
def __init__(self):
super().__init__()
self.setWindowTitle("Encryption and Decryption")
self.setGeometry(200, 200, 600, 400)
self.central_widget = QWidget(self)
self.setCentralWidget(self.central_widget)
self.layout = QVBoxLayout()
self.central_widget.setLayout(self.layout)
self.title_label = QLabel("Encryption and Decryption", self)
self.title_label.setStyleSheet("font-size: 24px; font-weight: bold; margin-bottom: 20px;")
self.layout.addWidget(self.title_label, alignment=Qt.AlignCenter)
self.selection_layout = QHBoxLayout()
self.layout.addLayout(self.selection_layout)
self.encryption_button = QPushButton("Encryption", self)
self.encryption_button.setStyleSheet(
"""
QPushButton {
font-size: 16px;
padding: 10px 20px;
background-color: #6ac5fe;
color: white;
border: none;
border-radius: 4px;
}
QPushButton:hover {
background-color: #42a5f5;
}
"""
)
self.encryption_button.clicked.connect(self.select_encryption)
self.selection_layout.addWidget(self.encryption_button)
self.decryption_button = QPushButton("Decryption", self)
self.decryption_button.setStyleSheet(
"""
QPushButton {
font-size: 16px;
padding: 10px 20px;
background-color: #6ac5fe;
color: white;
border: none;
border-radius: 4px;
}
QPushButton:hover {
background-color: #42a5f5;
}
"""
)
self.decryption_button.clicked.connect(self.select_decryption)
self.selection_layout.addWidget(self.decryption_button)
self.selected_file = ""
self.current_page = None
self.set_palette()
def set_palette(self):
palette = QPalette()
palette.setColor(QPalette.Window, QColor(240, 240, 240))
palette.setColor(QPalette.Button, QColor(200, 200, 200))
palette.setColor(QPalette.ButtonText, QColor(40, 40, 40))
palette.setColor(QPalette.Base, QColor(255, 255, 255))
palette.setColor(QPalette.Text, QColor(40, 40, 40))
self.setPalette(palette)
def select_encryption(self):
self.clear_layout()
self.create_encryption_window()
def select_decryption(self):
self.clear_layout()
self.create_decryption_window()
def create_encryption_window(self):
self.current_page = "Encryption"
self.file_layout = QHBoxLayout()
self.layout.addLayout(self.file_layout)
self.file_label = QLabel("File:", self)
self.file_label.setStyleSheet("font-size: 14px; font-weight: bold;")
self.file_layout.addWidget(self.file_label)
self.file_entry = QLineEdit(self)
self.file_entry.setReadOnly(True)
self.file_layout.addWidget(self.file_entry)
self.browse_button = QPushButton("Browse", self)
self.browse_button.setStyleSheet(
"""
QPushButton {
font-size: 12px;
padding: 5px 10px;
background-color: #42a5f5;
color: white;
border: none;
border-radius: 4px;
}
QPushButton:hover {
background-color: #2196f3;
}
"""
)
self.browse_button.clicked.connect(self.browse_file)
self.file_layout.addWidget(self.browse_button)
self.encryption_key_label = QLabel("Encryption Key:", self)
self.encryption_key_label.setStyleSheet("font-size: 14px; font-weight: bold; margin-top: 20px;")
self.layout.addWidget(self.encryption_key_label)
self.encryption_key_text = QTextEdit(self)
self.encryption_key_text.setReadOnly(True)
self.layout.addWidget(self.encryption_key_text)
self.generate_key_button = QPushButton("Generate Encryption Key", self)
self.generate_key_button.setStyleSheet(
"""
QPushButton {
font-size: 12px;
padding: 5px 10px;
background-color: #42a5f5;
color: white;
border: none;
border-radius: 4px;
}
QPushButton:hover {
background-color: #2196f3;
}
"""
)
self.generate_key_button.clicked.connect(self.generate_encryption_key)
self.layout.addWidget(self.generate_key_button)
self.encrypt_button = QPushButton("Encrypt", self)
self.encrypt_button.setStyleSheet(
"""
QPushButton {
font-size: 14px;
padding: 10px 20px;
background-color: #4caf50;
color: white;
border: none;
border-radius: 4px;
}
QPushButton:hover {
background-color: #43a047;
}
"""
)
self.encrypt_button.clicked.connect(self.encrypt_file)
self.layout.addWidget(self.encrypt_button)
self.back_button = QPushButton("Back", self)
self.back_button.setStyleSheet(
"""
QPushButton {
font-size: 14px;
padding: 10px 20px;
background-color: #f44336;
color: white;
border: none;
border-radius: 4px;
}
QPushButton:hover {
background-color: #e53935;
}
"""
)
self.back_button.clicked.connect(self.go_to_main_page)
self.layout.addWidget(self.back_button)
def create_decryption_window(self):
self.current_page = "Decryption"
self.file_layout = QHBoxLayout()
self.layout.addLayout(self.file_layout)
self.file_label = QLabel("File:", self)
self.file_label.setStyleSheet("font-size: 14px; font-weight: bold;")
self.file_layout.addWidget(self.file_label)
self.file_entry = QLineEdit(self)
self.file_entry.setReadOnly(True)
self.file_layout.addWidget(self.file_entry)
self.browse_button = QPushButton("Browse", self)
self.browse_button.setStyleSheet(
"""
QPushButton {
font-size: 12px;
padding: 5px 10px;
background-color: #42a5f5;
color: white;
border: none;
border-radius: 4px;
}
QPushButton:hover {
background-color: #2196f3;
}
"""
)
self.browse_button.clicked.connect(self.browse_file)
self.file_layout.addWidget(self.browse_button)
self.decryption_key_label = QLabel("Decryption Key:", self)
self.decryption_key_label.setStyleSheet("font-size: 14px; font-weight: bold; margin-top: 20px;")
self.layout.addWidget(self.decryption_key_label)
self.decryption_key_text = QTextEdit(self)
self.layout.addWidget(self.decryption_key_text)
self.decrypt_button = QPushButton("Decrypt", self)
self.decrypt_button.setStyleSheet(
"""
QPushButton {
font-size: 14px;
padding: 10px 20px;
background-color: #f44336;
color: white;
border: none;
border-radius: 4px;
}
QPushButton:hover {
background-color: #e53935;
}
"""
)
self.decrypt_button.clicked.connect(self.decrypt_file)
self.layout.addWidget(self.decrypt_button)
self.back_button = QPushButton("Back", self)
self.back_button.setStyleSheet(
"""
QPushButton {
font-size: 14px;
padding: 10px 20px;
background-color: #f44336;
color: white;
border: none;
border-radius: 4px;
}
QPushButton:hover {
background-color: #e53935;
}
"""
)
self.back_button.clicked.connect(self.go_to_main_page)
self.layout.addWidget(self.back_button)
def browse_file(self):
file_path, _ = QFileDialog.getOpenFileName(self, "Select File", "", "All Files (*.*)")
if file_path:
self.selected_file = file_path
self.file_entry.setText(self.selected_file)
def generate_encryption_key(self):
encryption_key = os.urandom(16).hex()
self.encryption_key_text.setText(encryption_key)
def encrypt_file(self):
file_path = self.selected_file
encryption_key = self.encryption_key_text.toPlainText().strip()
if file_path and encryption_key:
try:
with open(file_path, "rb+") as file:
original_data = file.read()
encrypted_data = self.xor_encrypt_decrypt(original_data, encryption_key)
# Go back to the beginning of the file
file.seek(0)
file.write(encrypted_data)
# Truncate the file to the size of the encrypted data
file.truncate(len(encrypted_data))
QMessageBox.information(self, "Encryption Successful", "File encrypted successfully.")
except Exception as e:
QMessageBox.critical(self, "Encryption Error", f"Failed to encrypt file: {e}")
else:
QMessageBox.warning(self, "Missing Information", "Please enter the file path and encryption key.")
def decrypt_file(self):
file_path = self.selected_file
decryption_key = self.decryption_key_text.toPlainText().strip()
if file_path and decryption_key:
try:
with open(file_path, "rb+") as file:
encrypted_data = file.read()
decrypted_data = self.xor_encrypt_decrypt(encrypted_data, decryption_key)
# Go back to the beginning of the file
file.seek(0)
file.write(decrypted_data)
# Truncate the file to the size of the decrypted data
file.truncate(len(decrypted_data))
QMessageBox.information(self, "Decryption Successful", "File decrypted successfully.")
except Exception as e:
QMessageBox.critical(self, "Decryption Error", f"Failed to decrypt file: {e}")
else:
QMessageBox.warning(self, "Missing Information", "Please enter the file path and decryption key.")
def xor_encrypt_decrypt(self, data, key):
key_length = len(key)
key_stream = [ord(key[i % key_length]) for i in range(len(data))]
return bytes([data[i] ^ key_stream[i] for i in range(len(data))])
def go_to_main_page(self):
self.clear_layout()
self.create_main_page()
def create_main_page(self):
self.current_page = None
self.title_label = QLabel("Encryption and Decryption", self)
self.title_label.setStyleSheet("font-size: 24px; font-weight: bold; margin-bottom: 20px;")
self.layout.addWidget(self.title_label, alignment=Qt.AlignCenter)
self.selection_layout = QHBoxLayout()
self.layout.addLayout(self.selection_layout)
self.encryption_button = QPushButton("Encryption", self)
self.encryption_button.setStyleSheet(
"""
QPushButton {
font-size: 16px;
padding: 10px 20px;
background-color: #6ac5fe;
color: white;
border: none;
border-radius: 4px;
}
QPushButton:hover {
background-color: #42a5f5;
}
"""
)
self.encryption_button.clicked.connect(self.select_encryption)
self.selection_layout.addWidget(self.encryption_button)
self.decryption_button = QPushButton("Decryption", self)
self.decryption_button.setStyleSheet(
"""
QPushButton {
font-size: 16px;
padding: 10px 20px;
background-color: #6ac5fe;
color: white;
border: none;
border-radius: 4px;
}
QPushButton:hover {
background-color: #42a5f5;
}
"""
)
self.decryption_button.clicked.connect(self.select_decryption)
self.selection_layout.addWidget(self.decryption_button)
def clear_layout(self):
while self.layout.count():
child = self.layout.takeAt(0)
if child.widget():
child.widget().deleteLater()
if __name__ == "__main__":
app = QApplication(sys.argv)
# Set the font globally for the application
font = QFont("Arial", 12)
app.setFont(font)
window = EncryptionDecryptionApp()
window.show()
sys.exit(app.exec_())