ZSSL

Status

Description

Enveloped encryption for secure file sharing based on ssh RSA keypairs

Synopsis

myhost ~$ zssl -i your_ssh_key.pub e file_to_share.plain file_to_share.encrypted

yourhost ~$ zssl d file_to_share.encrypted file_to_share.decrypted

Install

gem install zssl

Parameters

--identity, -i

The first and second arguments will be replaced with stdin and stdout respectively if not provided.

Principles and goals

• Share files of any size through email without installing PGP, or S/Mime
• Or whatever transport you want to use
• No need to install drivers or obscure OS features
• Make it a reusable gem to use ssh RSA key encryption in any project

Acceptance test

F=~/a_file_to_test ; expected=$(md5 < $F) ; zssl e < $F > ~/testfile ; result=$(zssl d < ~/testfile | md5) ; if [ "$expected"="$result" ]; then echo "All good" ; else echo "Something went wrong: $expected != $result" ; fi