gz-cipher

gz-cipher is a command-line tool providing common ciphers to gzip and encrypt large files (or decrypt and gunzip) with low memory cost using Node built-in stream, zlib and crypto modules.

Node version requirement

Please use Node >= 10.0.0 for security reason

Installation

Using npm:

$ npm i -g gz-cipher

Usage

Encryption:            gz-cipher -e file [-a cipher] [-p password]
Decryption:            gz-cipher -d file
-h, --help             output usage information
-v, --version          output the version number

Currently supported ciphers: (see more on openssl enc -help)

aes-128-cbc
aes-192-cbc (default)
aes-256-cbc
aes-128-gcm
aes-192-gcm
aes-256-gcm

Notes

gz-cipher won't overwrite your files if any output filename is conflict with your existing filename. Please rest assured :)

Directory encryption is not supported for now. However, if you zip the directory beforehand, gz-cipher still works

Backstory

It was based on a practice when I was trying to implement a Transform stream and found it could be a handy tool to gzip and encrypt large files. Then I made it a CLI tool available on npm.