cripper 0.2.0

Clipboard-based file & directory encryption tool

Cripper

Clipboard-based file & directory encryption tool — encrypt/decrypt via system clipboard with AES-128-CBC (Fernet).

Install

pip install -e .

Requirements: Python >= 3.8, click, cryptography, pyperclip

Usage

cripper encrypt <path>       # file or directory → clipboard (Base64 ciphertext)
cripper decrypt <output-dir>  # clipboard → restored files

Decrypt output is written to <output-dir>/<original-name>.

Key Management

On first run, a Fernet key is auto-generated at ~/.cripper (non-Windows: chmod 600). Delete the file to regenerate a new key.

.cripperignore

Place a .cripperignore file in any directory to exclude matching files/directories when encrypting a directory tree. Patterns follow .gitignore conventions:

• *.log — ignore all .log files (any nesting level)
• build/ — ignore the build directory and everything inside
• sub/*.tmp — ignore .tmp files directly inside sub/
• Lines starting with # are comments; blank lines are skipped

Ignore files are checked recursively — a pattern in a parent directory applies to all subdirectories.

Encryption Format

Binary payload: [1B type][4B name-len (big-endian)][name (UTF-8)][content], then Fernet-encrypted, Base64-encoded.

Type	Content
0x00	Raw file bytes
0x01	tar.gz archive of directory tree

Fallback

If clipboard access fails (e.g. headless environments), encrypted data is written to default.enc in the current directory.

License

Apache 2.0 — see LICENSE