It was meant to expose the GPG libgcrypt to Ruby user.

Unfortunately due to time constraint the struct gcry_cipher_handle of cipher_internal.h is too daunting.

The many struct/union inside it make it too time comsuning to duplicate into Ruby world.

One day maybe will continue finish this project.

Was compile and tested on LinuxMint 20.2 x86_64 (Kernel 5.4.0-80-generic), Ruby 3.0.2

Not ready for any operations except random number generator.

With compare to default OpenSSL engine:

• Smaller binary code base
• Support Twofish block cipher
• Support Salsa20 stream cipher
• Support PC/SC

Add this line to your application's Gemfile:

gem 'gcrypt'

And then execute:

$ bundle install

Or install it yourself as:

$ gem install gcrypt

Anyone welcome to fork!

The gem is available as open source under the terms of the MIT License.