编辑：
我做了一个工作示例,该URL为127个字符.

http://localhost/confirm?_=hBRCGVqie5PetQhjiagq9F6kmi7luVxpcpEYMWaxrtSHIPA3rF0Hufy6EgiH%0A%2BL3t9dcgV9es9Zywkl4F1lcMyA%3D%3D%0A

显然,更多的数据=较大的网址

def create
# Write k keys in params[:user] as v keys in to_encrypt,doing this saves LOTS of unnecessary chars
  @to_encrypt = Hash.new
  {:firstname => :fn,:lastname => :ln,:email => :el,:username => :un,:password => :pd}.each do |k,v|
    @to_encrypt[v] = params[:user][k]
  end
 
  encrypted_params = CGI::escape(Base64.encode64(encrypt(compress(Marshal.dump(@to_encrypt)),"secret")))
end
 
private
 
def aes(m,t,k)
  (aes = OpenSSL::Cipher::Cipher.new('aes-256-cbc').send(m)).key = Digest::SHA256.digest(k)
  aes.update(t) << aes.final
end
 
def encrypt(text,key)
  aes(:encrypt,text,key)
end
 
def decrypt(text,key)
  aes(:decrypt,key)
end
 
# All attempts to compress returned a longer url (Bypassed by return)
 
def compress(string)
  return string
  z = Zlib::Deflate.new(Zlib::BEST_COMPRESSION)
  o = z.deflate(string,Zlib::FINISH)
  z.close
  o
end
 
def decompress(string)
  return string
  z = Zlib::Inflate.new
  o = z.inflate(string)
  z.finish
  z.close
  o
end