Add standalone encryption/decryption scripts with cross-platform support
- Add decrypt/encrypt scripts for macOS, Windows, and Linux - Add cross-platform Python script (decrypt_folder.py) - Update README with setup instructions for all platforms - Scripts support all file types: png, jpg, jpeg, webp, gif, mp4, avi, mov
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MachinePainting
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#!/bin/bash
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# DropSend Decryption Script for macOS
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# Decrypts .enc files using a key stored in macOS Keychain
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echo "=== DropSend File Decryption (macOS) ==="
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echo ""
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echo "Drag in the folder of files to decrypt, or type the path:"
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# Read folder path (supports drag-and-drop)
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read -r FOLDER
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# Remove any surrounding quotes and trailing backslash from drag-and-drop
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FOLDER=$(echo "$FOLDER" | sed "s/^['\"]//;s/['\"]$//;s/\\\\$//" | xargs)
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# Validate folder path
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if [ -z "$FOLDER" ] || [ ! -d "$FOLDER" ]; then
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echo "Error: '$FOLDER' is not a valid directory."
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exit 1
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fi
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echo "Processing folder: $FOLDER"
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echo ""
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# Prompt for recursive option
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echo "Would you like to decrypt files recursively (including subfolders)? (Y/N)"
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read -r RECURSIVE_RESPONSE
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if [[ "$RECURSIVE_RESPONSE" == "Y" || "$RECURSIVE_RESPONSE" == "y" ]]; then
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RECURSIVE="true"
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else
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RECURSIVE="false"
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fi
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# Retrieve key from Keychain
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echo ""
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echo "Retrieving key from Keychain..."
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KEY=$(security find-generic-password -s "DropSend_Encryption_Key" -a "DropSend" -w 2>/dev/null)
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if [ -z "$KEY" ]; then
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echo ""
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echo "Error: Failed to retrieve key from Keychain."
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echo ""
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echo "To store your encryption key in Keychain:"
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echo " 1. Open Keychain Access (search in Spotlight)"
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echo " 2. Click File > New Password Item"
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echo " 3. Set Keychain Item Name: DropSend_Encryption_Key"
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echo " 4. Set Account Name: DropSend"
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echo " 5. Set Password: [your encryption key]"
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echo " 6. Click Add"
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echo ""
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exit 1
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fi
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echo "Key retrieved successfully."
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echo ""
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# Python script to decrypt all .enc files
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python3 - <<EOF
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import os
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import sys
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from cryptography.fernet import Fernet
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def decrypt_file(encrypted_path, output_path, key):
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try:
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fernet = Fernet(key.encode())
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with open(encrypted_path, 'rb') as enc_file:
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encrypted_data = enc_file.read()
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decrypted_data = fernet.decrypt(encrypted_data)
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with open(output_path, 'wb') as dec_file:
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dec_file.write(decrypted_data)
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print(f" ✓ Decrypted: {os.path.basename(output_path)}")
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return True
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except Exception as e:
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print(f" ✗ Error decrypting {os.path.basename(encrypted_path)}: {e}")
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return False
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# Process .enc files
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folder = "$FOLDER"
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key = "$KEY"
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recursive = "$RECURSIVE" == "true"
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enc_files = []
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success_count = 0
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error_count = 0
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print("Scanning for .enc files...")
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if recursive:
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for root, _, files in os.walk(folder):
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for file in files:
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if file.endswith('.enc'):
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enc_files.append(os.path.join(root, file))
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else:
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for file in os.listdir(folder):
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if file.endswith('.enc'):
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enc_files.append(os.path.join(folder, file))
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if not enc_files:
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print("No .enc files found in the specified location.")
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sys.exit(0)
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print(f"Found {len(enc_files)} .enc file(s) to decrypt.")
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print("")
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for enc_path in enc_files:
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# Remove .enc extension to get original filename
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# Default to .png if no other extension is apparent
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base_name = enc_path[:-4] # Remove .enc
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if not os.path.splitext(base_name)[1]:
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# No extension found, default to .png
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out_path = base_name + '.png'
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else:
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out_path = base_name
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if decrypt_file(enc_path, out_path, key):
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success_count += 1
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else:
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error_count += 1
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print("")
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print(f"Decryption complete: {success_count} successful, {error_count} failed")
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EOF
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# Check if decryption was successful
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if [ $? -ne 0 ]; then
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echo "Error: Decryption process encountered an error."
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exit 1
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fi
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echo ""
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# Prompt to move .enc files
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echo "Would you like to move all .enc files to a separate folder? (Y/N)"
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read -r MOVE_RESPONSE
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if [[ "$MOVE_RESPONSE" == "Y" || "$MOVE_RESPONSE" == "y" ]]; then
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ENC_FOLDER="$FOLDER/_encrypted_originals"
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mkdir -p "$ENC_FOLDER"
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MOVED_COUNT=0
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if [ "$RECURSIVE" = "true" ]; then
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while IFS= read -r -d '' file; do
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if [ -f "$file" ]; then
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mv "$file" "$ENC_FOLDER/$(basename "$file")"
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((MOVED_COUNT++))
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fi
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done < <(find "$FOLDER" -type f -name "*.enc" -print0)
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else
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for file in "$FOLDER"/*.enc; do
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if [ -f "$file" ]; then
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mv "$file" "$ENC_FOLDER/$(basename "$file")"
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((MOVED_COUNT++))
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fi
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done
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fi
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echo "Moved $MOVED_COUNT .enc file(s) to: $ENC_FOLDER"
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else
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echo "Leaving .enc files in place."
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fi
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echo ""
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echo "Done!"
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@@ -0,0 +1,138 @@
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#!/bin/bash
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# DropSend Encryption Script for macOS
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# Encrypts image files using a key stored in macOS Keychain
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echo "=== DropSend File Encryption (macOS) ==="
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echo ""
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echo "Drag in the folder of files to encrypt, or type the path:"
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# Read folder path (supports drag-and-drop)
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read -r FOLDER
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# Remove any surrounding quotes and trailing backslash from drag-and-drop
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FOLDER=$(echo "$FOLDER" | sed "s/^['\"]//;s/['\"]$//;s/\\\\$//" | xargs)
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# Validate folder path
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if [ -z "$FOLDER" ] || [ ! -d "$FOLDER" ]; then
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echo "Error: '$FOLDER' is not a valid directory."
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exit 1
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fi
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echo "Processing folder: $FOLDER"
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echo ""
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# Prompt for recursive option
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echo "Would you like to encrypt files recursively (including subfolders)? (Y/N)"
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read -r RECURSIVE_RESPONSE
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if [[ "$RECURSIVE_RESPONSE" == "Y" || "$RECURSIVE_RESPONSE" == "y" ]]; then
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RECURSIVE="true"
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else
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RECURSIVE="false"
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fi
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# Retrieve key from Keychain
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echo ""
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echo "Retrieving key from Keychain..."
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KEY=$(security find-generic-password -s "DropSend_Encryption_Key" -a "DropSend" -w 2>/dev/null)
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if [ -z "$KEY" ]; then
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echo ""
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echo "Error: Failed to retrieve key from Keychain."
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echo ""
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echo "To store your encryption key in Keychain:"
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echo " 1. Open Keychain Access (search in Spotlight)"
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echo " 2. Click File > New Password Item"
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echo " 3. Set Keychain Item Name: DropSend_Encryption_Key"
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echo " 4. Set Account Name: DropSend"
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echo " 5. Set Password: [your encryption key]"
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echo " 6. Click Add"
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echo ""
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exit 1
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fi
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echo "Key retrieved successfully."
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echo ""
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# Python script to encrypt supported files
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python3 - <<EOF
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import os
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import sys
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from cryptography.fernet import Fernet
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# Supported file extensions (matching DropSend node)
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SUPPORTED_EXTENSIONS = ('.png', '.jpg', '.jpeg', '.webp', '.gif', '.mp4', '.avi', '.mov')
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def encrypt_file(input_path, output_path, key):
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try:
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fernet = Fernet(key.encode())
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with open(input_path, 'rb') as in_file:
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data = in_file.read()
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encrypted_data = fernet.encrypt(data)
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with open(output_path, 'wb') as out_file:
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out_file.write(encrypted_data)
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return True
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except Exception as e:
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print(f" ✗ Error encrypting {os.path.basename(input_path)}: {e}")
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return False
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# Process files
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folder = "$FOLDER"
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key = "$KEY"
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recursive = "$RECURSIVE" == "true"
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files_to_encrypt = []
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success_count = 0
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error_count = 0
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print("Scanning for supported files...")
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print(f"Supported formats: {', '.join(SUPPORTED_EXTENSIONS)}")
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print("")
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if recursive:
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for root, _, files in os.walk(folder):
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for file in files:
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if file.lower().endswith(SUPPORTED_EXTENSIONS):
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files_to_encrypt.append(os.path.join(root, file))
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else:
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for file in os.listdir(folder):
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if file.lower().endswith(SUPPORTED_EXTENSIONS):
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files_to_encrypt.append(os.path.join(folder, file))
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if not files_to_encrypt:
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print("No supported files found in the specified location.")
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sys.exit(0)
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print(f"Found {len(files_to_encrypt)} file(s) to encrypt.")
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print("")
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for file_path in files_to_encrypt:
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# Create temp file first, then rename
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temp_enc_path = file_path + '.tmp.enc'
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final_enc_path = file_path + '.enc'
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try:
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if encrypt_file(file_path, temp_enc_path, key):
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os.remove(file_path) # Delete original
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os.rename(temp_enc_path, final_enc_path) # Rename to final
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print(f" ✓ Encrypted: {os.path.basename(file_path)} → {os.path.basename(final_enc_path)}")
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success_count += 1
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else:
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error_count += 1
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if os.path.exists(temp_enc_path):
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os.remove(temp_enc_path)
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except Exception as e:
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print(f" ✗ Error processing {os.path.basename(file_path)}: {e}")
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error_count += 1
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if os.path.exists(temp_enc_path):
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os.remove(temp_enc_path)
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print("")
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print(f"Encryption complete: {success_count} successful, {error_count} failed")
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EOF
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# Check if encryption was successful
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if [ $? -ne 0 ]; then
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echo "Error: Encryption process encountered an error."
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exit 1
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fi
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echo ""
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echo "Done!"
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