rails加密/解密 [英] rails encryption/decryption

问题描述

我需要在我的rails应用程序中进行加密和解密。我试图使用ezcrypto，但每当我解密我得到这个错误。

  OpenSSL :: Cipher :: CipherError在ProfilesController＃显示
 
错误的最终块长度
  

需要更改才能停止这个错误。我尝试使用这样的openssl的其他实现（从我的模型中调用的方法）

  def encrypt_attr（unencrypted）
c = OpenSSL :: Cipher.new（aes-256-cbc）
 c.encrypt 
 c.key = Digest :: SHA1.hexdigest（'pass'）
e = c。 update（unencrypted）
e<< c.final 
 return e 
 end 
 
 def decrypt_attr（encrypted_attr）
如果encrypted_attr！=
c = OpenSSL :: Cipher :: Cipher。 new（aes-256-cbc）
 c.decrypt 
 c.key = Digest :: SHA1.hexdigest（'pass'）
d = c.update（encrypted_attr）
d< c.final 
 return d 
 end 
 end 
  

它抛出完全相同的解密错误。我应该如何进行加密和解密，而不会得到这个openssl错误。

解决方案

  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。解密（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 decrypt log file for message＃{msg} =＃{exc.message}）
 end 
 end 
 end 
  





加密

  irb主要）：007：0> AesEncryptDecrypt.encryption（'gurudath'）
 => rUPKObydUJd9cY9agm3Glw == \\\

  

解密

  IRB（主）：008：0> AesEncryptDecrypt.decryption（'rUPKObydUJd9cY9agm3Glw =='）
 => gurudath
  

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 ProfilesController#show

wrong final block length

What would need to be changed to stop this error. I tried using another implementation of openssl like this (methods to be called from my model)

def encrypt_attr(unencrypted)
    c = OpenSSL::Cipher.new("aes-256-cbc")
    c.encrypt
    c.key = Digest::SHA1.hexdigest('pass')
    e = c.update(unencrypted)
    e << c.final
    return e
end

def decrypt_attr(encrypted_attr)
  if encrypted_attr != ""
    c = OpenSSL::Cipher::Cipher.new("aes-256-cbc")
    c.decrypt
    c.key = Digest::SHA1.hexdigest('pass')
    d = c.update(encrypted_attr)
    d << c.final
    return d
  end
end

It throws the exact same error on decryption. How should i do encryption and decryption and not get this openssl error.

解决方案

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"

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