ciphertool-cli

A fast, lightweight, multi-algorithm cipher CLI tool written in Node.js. It supports 6 different ciphers and integrates perfectly into shell pipelines.

Installation

Install globally via npm:

npm install -g ciphertool-cli

(Note: If you encounter permission errors, you may need to run with sudo or configure npm to use a different directory.)

Usage

The global command is ciphertool-cli.

ciphertool-cli [options]

Options

• -h, --help : Show help message
• -m, --mode <mode> : Mode: encrypt or decrypt (default: encrypt)
• -c, --cipher <type> : Cipher type: atbash, caesar, scytale, vigenere, morse, binary (default: atbash)
• -k, --key <key> : Key/parameter for the cipher (e.g., shift for Caesar, keyword for Vigenere)
• -i, --input <text> : Input text to process
• -f, --file <path> : Treat input as a file path and read from it

Piping (Standard Input)

If you omit -i and -f, ciphertool-cli will automatically read from standard input (stdin), making it perfect for chaining commands:

echo "hello world" | ciphertool-cli -c caesar -k 3

Examples

1. Caesar Cipher (Shift by 5)

ciphertool-cli -c caesar -m encrypt -k 5 -i "hello"
# Output: mjqqt

2. Vigenère Cipher (Keyword: "secret")

ciphertool-cli -c vigenere -m encrypt -k "secret" -i "supersecretmessage"
# Output: klyvtkwvimgqwweiy

3. Atbash Cipher via File

ciphertool-cli -c atbash -m decrypt -f ./my_secret_file.txt

4. Morse Code Pipeline

echo "sos" | ciphertool-cli -c morse -m encrypt
# Output: ... --- ...

Supported Ciphers

• Atbash: Reverses the alphabet (A ↔ Z, B ↔ Y).
• Caesar: Shifts the alphabet by a given integer -k.
• Scytale: Transposes characters based on a diameter -k.
• Vigenère: Shifts characters using a keyword -k.
• Morse: Standard Morse code (dots and dashes).
• Binary: Converts text to 8-bit binary strings.

License

ISC