File Security Toolkit

When to Use

• Use this skill when you need encrypt/decrypt local files, redact sensitive information in documents, and validate password strength when handling private data or preparing files for sharing in a reproducible workflow.
• Use this skill when a others task needs a packaged method instead of ad-hoc freeform output.
• Use this skill when the user expects a concrete deliverable, validation step, or file-based result.
• Use this skill when scripts/file_security.py is the most direct path to complete the request.
• Use this skill when you need the file-security-toolkit package behavior rather than a generic answer.

Key Features

• Scope-focused workflow aligned to: Encrypt/decrypt local files, redact sensitive information in documents, and validate password strength when handling private data or preparing files for sharing.
• Packaged executable path(s): scripts/file_security.py.
• Structured execution path designed to keep outputs consistent and reviewable.

Dependencies

• Python: 3.10+. Repository baseline for current packaged skills.
• Third-party packages: not explicitly version-pinned in this skill package. Add pinned versions if this skill needs stricter environment control.

Example Usage

cd "20260316/scientific-skills/Others/file-security-toolkit"
python -m py_compile scripts/file_security.py
python scripts/file_security.py --help

Example run plan:

1. Confirm the user input, output path, and any required config values.
2. Edit the in-file CONFIG block or documented parameters if the script uses fixed settings.
3. Run python scripts/file_security.py with the validated inputs.
4. Review the generated output and return the final artifact with any assumptions called out.

Implementation Details

• Execution model: validate the request, choose the packaged workflow, and produce a bounded deliverable.
• Input controls: confirm the source files, scope limits, output format, and acceptance criteria before running any script.
• Primary implementation surface: scripts/file_security.py.
• Parameters to clarify first: input path, output path, scope filters, thresholds, and any domain-specific constraints.
• Output discipline: keep results reproducible, identify assumptions explicitly, and avoid undocumented side effects.

1. When to Use

Use this skill when you need to:

• Encrypt and archive a folder (or multiple files) into a password-protected ZIP (AES-256) before sharing or storing.
• Encrypt a single file with a password (without creating a ZIP archive).
• Redact sensitive information (e.g., emails, phone numbers, IDs) from documents before distribution.
• Validate whether a password meets basic strength requirements before using it for encryption.

2. Key Features

• ZIP AES-256 encryption/decryption for files and folders (zip-encrypt, zip-decrypt).
• Single-file password encryption/decryption (file-encrypt, file-decrypt).
• Privacy redaction for common document formats (redact):
  • Supported: txt, md, csv, docx, pptx
  • Detects and removes/masks: email addresses, phone numbers, ID numbers, and name/address keywords.
• Password strength checking (check-password) based on simple composition rules.
• Local-only processing: operates on user-specified paths; no network access.

3. Dependencies

Install dependencies with:

python -m pip install pyzipper cryptography python-docx python-pptx pillow

Python version is not specified in the source document. Ensure your environment supports the listed packages.

4. Example Usage

Entry point script:

python scripts/file_security.py --help

Check password strength

python scripts/file_security.py check-password --password "Abcdefg1"

Encrypt / decrypt a single file

python scripts/file_security.py file-encrypt \
  --input sample.txt \
  --output sample.txt.enc \
  --password "Abcdefg1"

python scripts/file_security.py file-decrypt \
  --input sample.txt.enc \
  --output sample_out.txt \
  --password "Abcdefg1"

Encrypt / decrypt a folder or files as ZIP (AES-256)

python scripts/file_security.py zip-encrypt \
  --input ./my_folder \
  --output ./my_folder.zip \
  --password "Abcdefg1"

python scripts/file_security.py zip-decrypt \
  --input ./my_folder.zip \
  --output ./my_folder_out \
  --password "Abcdefg1"

Redact sensitive information in documents

python scripts/file_security.py redact \
  --input ./docs/input.docx \
  --output ./docs/input.redacted.docx

5. Implementation Details

Commands and behavior

• zip-encrypt / zip-decrypt
  • Creates or extracts a ZIP archive using AES-256 encryption.
  • Intended for encrypting multiple files or folders as a single archive.
• file-encrypt / file-decrypt
  • Encrypts/decrypts the contents of one file using a user-provided password.
  • Output is written to the specified path; the original file is not modified unless you overwrite it.
• redact
  • Processes supported file types: txt, md, csv, docx, pptx.
  • Applies redaction rules targeting:
    • Email addresses
    • Phone numbers
    • ID numbers
    • Name/address keywords
  • Produces a redacted output file at the specified location.
• check-password
  • Validates password strength using basic rules:
    • Length >= 8
    • Contains uppercase letters
    • Contains lowercase letters
    • Contains numbers

Security constraints (operational)

• No network access: the script only processes local files.
• Path-scoped I/O: reads only from user-provided input paths and writes only to user-provided output paths.
• No sensitive logging: avoids printing raw document content to logs.
• No credential retention: does not store passwords/keys.