module JWT::Algos::Rsa

def sign(algorithm, msg, key)
  raise EncodeError, "The given key is a #{key.class}. It has to be an OpenSSL::PKey::RSA instance." if key.instance_of?(String)
  key.sign(OpenSSL::Digest.new(algorithm.sub('RS', 'sha')), msg)
end

def verify(algorithm, public_key, signing_input, signature)
  SecurityUtils.verify_rsa(algorithm, public_key, signing_input, signature)
end