diff --git a/.rubocop.yml b/.rubocop.yml
index 58a9ee2..3bf1f76 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -1,3 +1,6 @@
+require:
+  - rubocop-performance
+
 inherit_mode:
   merge:
     - Exclude
@@ -36,5 +39,8 @@ Security:
 Style/FrozenStringLiteralComment:
   Enabled: true
 
+Style/HashSyntax:
+  Enabled: true
+
 Style/RedundantFreeze:
   Enabled: true
diff --git a/.travis.yml b/.travis.yml
index 76b444d..b422e7e 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -2,6 +2,10 @@ sudo: false
 language: ruby
 cache: bundler
 
+os:
+  - linux
+  - osx
+
 rvm:
   - ruby-head
   - 2.7.0-preview1
@@ -17,7 +21,9 @@ gemfile:
   - gemfiles/openssl_2_0.gemfile
   - gemfiles/openssl_default.gemfile
 
-before_install: gem install bundler -v '~> 1.17'
+before_install:
+  - gem install bundler -v '~> 1.17'
+  - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then ./script/setup-osx; else sudo ./script/setup-linux; fi
 
 matrix:
   fast_finish: true
diff --git a/CHANGELOG.md b/CHANGELOG.md
index fda21eb..985557a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## [v0.8.0] - 2019-08-17
+
+### Added
+
+- Support `COSE::Key` instantiation based on an `OpenSSL::PKey` object with `COSE::Key.from_pkey`
+- Provide writer methods for `COSE::Key` Common Parameters (`#base_iv=`, `#key_ops=`, `#alg=` and `#kid=`)
+
 ## [v0.7.0] - 2019-05-02
 
 ### Fixed
@@ -79,6 +86,7 @@
 - EC2 key object
 - Works with ruby 2.5
 
+[v0.8.0]: https://github.com/cedarcode/cose-ruby/compare/v0.7.0...v0.8.0/
 [v0.7.0]: https://github.com/cedarcode/cose-ruby/compare/v0.6.1...v0.7.0/
 [v0.6.1]: https://github.com/cedarcode/cose-ruby/compare/v0.6.0...v0.6.1/
 [v0.6.0]: https://github.com/cedarcode/cose-ruby/compare/v0.5.0...v0.6.0/
diff --git a/README.md b/README.md
index 9bc28e8..ec05705 100644
--- a/README.md
+++ b/README.md
@@ -1,10 +1,25 @@
 # cose
 
-CBOR Object Signing and Encryption (COSE) ruby library
+Ruby implementation of RFC 8152 CBOR Object Signing and Encryption (COSE)
 
 [![Gem](https://img.shields.io/gem/v/cose.svg?style=flat-square)](https://rubygems.org/gems/cose)
 [![Travis](https://img.shields.io/travis/cedarcode/cose-ruby.svg?style=flat-square)](https://travis-ci.org/cedarcode/cose-ruby)
 
+## Prerequisites
+
+### OSX
+
+```
+brew tap pjk/libcbor
+brew install libcbor
+```
+
+### Linux (APT)
+
+```
+apt-get install libcbor-dev
+```
+
 ## Installation
 
 Add this line to your application's Gemfile:
diff --git a/Rakefile b/Rakefile
index 3e05b08..f08d54f 100644
--- a/Rakefile
+++ b/Rakefile
@@ -7,4 +7,4 @@ require "rubocop/rake_task"
 RSpec::Core::RakeTask.new(:spec)
 RuboCop::RakeTask.new
 
-task :default => [:rubocop, :spec]
+task default: [:rubocop, :spec]
diff --git a/cose.gemspec b/cose.gemspec
index 897a797..05f6a15 100644
--- a/cose.gemspec
+++ b/cose.gemspec
@@ -10,7 +10,7 @@ Gem::Specification.new do |spec|
   spec.authors       = ["Gonzalo Rodriguez", "Braulio Martinez"]
   spec.email         = ["gonzalo@cedarcode.com", "braulio@cedarcode.com"]
 
-  spec.summary       = "CBOR Object Signing and Encryption (COSE) ruby library"
+  spec.summary       = "Ruby implementation of RFC 8152 CBOR Object Signing and Encryption (COSE)"
   spec.homepage      = "https://github.com/cedarcode/cose-ruby"
   spec.license       = "MIT"
 
@@ -31,12 +31,13 @@ Gem::Specification.new do |spec|
 
   spec.required_ruby_version = ">= 2.2"
 
-  spec.add_dependency "cbor", "~> 0.5.9"
+  spec.add_dependency "libcbor", "~> 0.1.0"
 
   spec.add_development_dependency "appraisal", "~> 2.2.0"
   spec.add_development_dependency "bundler", ">= 1.17", "< 3"
   spec.add_development_dependency "byebug", ">= 10.0"
   spec.add_development_dependency "rake", "~> 12.3"
   spec.add_development_dependency "rspec", "~> 3.8"
-  spec.add_development_dependency "rubocop", "0.66.0"
+  spec.add_development_dependency "rubocop", "0.68.0"
+  spec.add_development_dependency "rubocop-performance", "~> 1.3"
 end
diff --git a/lib/cbor.rb b/lib/cbor.rb
new file mode 100644
index 0000000..549bcf3
--- /dev/null
+++ b/lib/cbor.rb
@@ -0,0 +1 @@
+require "libcbor/all"
diff --git a/lib/cose/version.rb b/lib/cose/version.rb
index 3aad272..5be5b6d 100644
--- a/lib/cose/version.rb
+++ b/lib/cose/version.rb
@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 module COSE
-  VERSION = "0.7.0"
+  VERSION = "0.8.0"
 end
diff --git a/script/setup-linux b/script/setup-linux
new file mode 100755
index 0000000..1b7e150
--- /dev/null
+++ b/script/setup-linux
@@ -0,0 +1,10 @@
+#!/bin/sh
+
+set -x
+
+if ! apt-cache show libcbor-dev >> /dev/null; then
+  add-apt-repository ppa:yubico/stable -y
+  apt-get update -q
+fi
+
+apt-get install libcbor-dev -y
diff --git a/script/setup-osx b/script/setup-osx
new file mode 100755
index 0000000..e49e177
--- /dev/null
+++ b/script/setup-osx
@@ -0,0 +1,6 @@
+#!/bin/sh
+
+set -x
+
+brew tap pjk/libcbor
+brew install libcbor