phimed / minimal-ruby-rsa-encryptor-decryptor Goto Github PK

This is an absolute bare-bones pure Ruby application that will perform RSA encryption and decryption of user provided text files via the command line.

Methods used here are borrowed from the archived EncryptoSigno Gem

Setup:

• Generate your own RSA private/public key pair and save them in the correspondingly named files inside this app automically by running these two commands from the top level directory for the app.

  $openssl genrsa -out lib/private.key 2048

  $openssl rsa -pubout -in lib/private.key -out lib/public.key

  (or insert your own existing keys)

To use:

From the command line:

• To encrypt a file:

  $ruby runner.rb <<path_to_file_you_wish_to_encrypt.txt>>

  Application will encrypt the contents of the file using the public key and save it (in the top level directory of this app) as <<original file>>_encrypted.txt.

• To decrypt a file:

  $ruby runner.rb <<path_to_file_you_wish_to_decrypt>>_encrypted.txt

  (file must end in `_encrypted.txt)

  Application will automatically detect the _encrypted.txt in the file name, decrypt it using the private key, and save it as a new file, same name less the _encrypted bit (in the top level directory of this app).

  Photo by Oliver Paaske on Unsplash