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Making Ruby encryption easier since 2011

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README.markdown

Gibberish - Encryption in Ruby made simple

What

Gibberish is an opinionated cryptography library for Ruby. Its objective is easy but secure encryption in Ruby.

Why

While OpenSSL is an extremely capable encryption library, it lacks a terse and clean interface in Ruby.

Goals

  • This library should remain easily iteroperable with the OpenSSL command line interface. Each function will include documentation on how to perform the same routine via the command line with OpenSSL

  • It should default to a reasonably secure setting, e.g. 256-bit AES, or SHA1 for HMAC
    But it should allow the user to specify a stronger setting, within reason.

  • Procedures should be well tested and be compatible with Ruby 1.8.7 and 1.9

Requirements

Ruby compiled with OpenSSL support

Installation

gem install gibberish

AES

Defaults to 256 bit CBC encryption

cipher = Gibberish::AES.new("p4ssw0rd")
cipher.enc("Some top secret data")
#=> U2FsdGVkX187oKRbgDkUcMKaFfB5RsXQj/X4mc8X3lsUVgwb4+S55LQo6f6N\nIDMX

cipher.dec("U2FsdGVkX187oKRbgDkUcMKaFfB5RsXQj/X4mc8X3lsUVgwb4+S55LQo6f6N\nIDMX")
#=> "Some top secret data"

Gibberish AES is fully compatible with default OpenSSL on the command line

echo "U2FsdGVkX187oKRbgDkUcMKaFfB5RsXQj/X4mc8X3lsUVgwb4+S55LQo6f6N\nIDMX\n" | \
openssl enc -d -aes-256-cbc -a -k p4ssw0rd

Find out more

RSA

k = Gibberish::RSA.generate_keypair(1024)
cipher = Gibberish::RSA.new(k.public_key)
enc = cipher.encrypt("Some data")
# Defaults to Base64 output
#=> "JKm98wKyJljqmpx7kP8ZsdeXiShllEMcRHVnjUjc4ecyYK/doKAkVTLho1Gp\ng697qrljyClF0AcIH+XZmeF/TrqYUuCEUyhOD6OL1bs5dn8vFQefS5KdaC5Y\ndLADvh3mSfE/w/gs4vaf/OtbZNBeSl6ROCZasWTfRewp4n1RDmE=\n"
cipher = Gibberish::RSA.new(k.private_key)
dec = cipher.decrypt(enc)

Find out more

HMAC

Defaults to 128 bit digest

Gibberish::HMAC("key", "some data")
#=> 521677c580722c5c52fa15d978e8656341c4f3c5

Find out more

Digests

Gibberish::MD5("somedata")
#=> aefaf7502d52994c3b01957636a3cdd2

Gibberish::SHA1("somedata")
#=> efaa311ae448a7374c122061bfed952d940e9e37

Gibberish::SHA256("somedata")
#=> 87d149cb424c0387656f211d2589fb5b1e16229921309e98588419ccca8a7362

Gibberish::SHA512("somedata")
#=> a053441b6de662599ecb14c580d6637dcb856a66b2a40a952d39df772e47e98ea22f9e105b31463c5cf2472feae7649464fe89d99ceb6b0bc398a6926926f416

Find out more

Run the tests

git clone https://github.com/mdp/gibberish.git
cd gibberish
bundle install
rake test

TODO

  • Cover OpenSSL exceptions with more reasonable and easier to understand exceptions.
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