@@ -8,6 +8,10 @@ This Ruby extension implements the SHA-3 ([Keccak](http://keccak.noekeon.org/))
gem install digest-sha3
+Our gem is signed using PGP with the [Phusion Software Signing key](http://www.phusion.nl/about/gpg). That key in turn is signed by [the rubygems-openpgp Certificate Authority](http://www.rubygems-openpgp-ca.org/).
+You can verify the authenticity of the gem by following [The Complete Guide to Verifying Gems with rubygems-openpgp](http://www.rubygems-openpgp-ca.org/blog/the-complete-guide-to-verifying-gems-with-rubygems-openpgp.html).
Keccak supports 5 hash lengths: 224-bit, 256-bit, 384-bit, 512-bit and variable length. Variable length is not supported by this Ruby extension. Unless the user specifies otherwise, this Ruby extension assumes 512-bit.