rails encryption/decryption

Question

i need to do encryption and decryption in my rails app. Im trying to use ezcrypto, but whenever i do decryption i get this error.

OpenSSL::Cipher::CipherError in         


        

Answer 1

require 'openssl'
require 'base64'

class AesEncryptDecrypt

  KEY = "EncryptDecryptGurudathBN"
  ALGORITHM = 'AES-128-ECB'

  def self.encryption(msg)
    begin
      cipher = OpenSSL::Cipher.new(ALGORITHM)
      cipher.encrypt()
      cipher.key = KEY
      crypt = cipher.update(msg) + cipher.final()
      crypt_string = (Base64.encode64(crypt))
      return crypt_string
    rescue Exception => exc
      puts ("Message for the encryption log file for message #{msg} = #{exc.message}")
    end
  end

  def self.decryption(msg)
    begin
      cipher = OpenSSL::Cipher.new(ALGORITHM)
      cipher.decrypt()
      cipher.key = KEY
      tempkey = Base64.decode64(msg)
      crypt = cipher.update(tempkey)
      crypt << cipher.final()
      return crypt
    rescue Exception => exc
      puts ("Message for the decryption log file for message #{msg} = #{exc.message}")
    end
  end
end

Encryption

irb(main):007:0> AesEncryptDecrypt.encryption('gurudath')
=> "rUPKObydUJd9cY9agm3Glw==\n"

Decryption

irb(main):008:0> AesEncryptDecrypt.decryption('rUPKObydUJd9cY9agm3Glw==')
=> "gurudath"