Refactor and prep for OpenSSL. Commentted out OpenSSL code is in lib/yubikey/otp.rb
[openssl] specs run and fail
[openssl] fix loadpaths, drop crypt
[openssl] make specs sexy
[openssl] use new code, comment old code
[openssl] fix backwards spec
[openssl] we need ECB because we have no IV
[openssl] use long name here too
Fix OTP decryption and verification
Merge pull request #1 from maartenvg/openssl

Fix OTP decryption and verification
Merge pull request #7 from blueboxgroup/openssl

Migrate to OpenSSL.