# Ruby des encrypt

**URL:** <https://www.ruby-forum.com/t/ruby-des-encrypt/187663>\
**Category:** Ruby\
**Created:** [April 27, 2010, 3:00pm UTC](https://www.ruby-forum.com/t/ruby-des-encrypt/187663 "2010-04-27T15:00:35Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![niedhui](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/n/9f8e36/32.png) [@niedhui](https://www.ruby-forum.com/u/niedhui)\
**Post date:** [April 27, 2010, 3:00pm UTC](https://www.ruby-forum.com/t/ruby-des-encrypt/187663/1 "2010-04-27T15:00:35Z")

</div>

I’m trying to using ruby des encrypt ,  
in php(some gives me )  
function encrypt($input) {  
$size = mcrypt\_get\_block\_size(‘des’, ‘ecb’);  
$input = $this-\>pkcs5\_pad($input, $size);

```
$key = $this->key;
  $td = mcrypt_module_open('des', '', 'ecb', '');
  $iv = @mcrypt_create_iv (mcrypt_enc_get_iv_size($td),

```

MCRYPT\_RAND);  
@mcrypt\_generic\_init($td, $key, $iv);  
$data = mcrypt\_generic($td, $input);  
mcrypt\_generic\_deinit($td);  
mcrypt\_module\_close($td);  
$data = base64\_encode($data);  
return $data;  
}  
function pkcs5\_pad ($text, $blocksize) {  
$pad = $blocksize - (strlen($text) % $blocksize);  
return $text . str\_repeat(chr($pad), $pad);  
}

or in java  
public String encrypt(String input) throws Exception {  
return base64Encode(desEncrypt(input.getBytes()));  
}  
public static String base64Encode(byte[] s) {  
return new Base64Encoder().encode(s);  
}  
public byte[] desDecrypt(byte[] encryptText) throws Exception {

```
   byte rawKeyData[] = desKey;
   DESKeySpec dks = new DESKeySpec(rawKeyData);

   SecretKeyFactory keyFactory =

```

SecretKeyFactory.getInstance(“DES”);  
SecretKey key = keyFactory.generateSecret(dks);

```
   Cipher cipher = Cipher.getInstance("DES");

   cipher.init(Cipher.DECRYPT_MODE, key);

   byte encryptedData[] = encryptText;
   byte decryptedData[] = cipher.doFinal(encryptedData);
   return decryptedData;

```

}

how can i translate this into ruby?  
require ‘openssl’  
require ‘Base64’  
c = OpenSSL::Cipher::Cipher.new(“des”)  
c.encrypt  
c.key = “4dddb3b191a1c2d8ea1sxcv23”  
#or c.pkcs5\_keyivgen(“4dddb3b191a1c2d8ea1sxcv23”)  
e = c.update(“hellcatjack:111111”)  
e \<\< c.final  
puts Base64.encode64(e)

it’s not the same as php…

---

<div class="post-metadata">

**Author:** ![niedhui](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/n/9f8e36/32.png) [@niedhui](https://www.ruby-forum.com/u/niedhui)\
**Post date:** [April 27, 2010, 3:46pm UTC](https://www.ruby-forum.com/t/ruby-des-encrypt/187663/2 "2010-04-27T15:46:27Z")

</div>

Hi,

Did you try other kind of DES encryption in Ruby ?

e.g:

c = OpenSSL::Cipher::Cipher.new(‘DES-EDE3-CBC’)

In order to know the different kind of alorithms, type:

[15:44] pierre \> openssl  
OpenSSL\> help  
openssl:Error: ‘help’ is an invalid command.

Standard commands  
asn1parse ca ciphers crl crl2pkcs7  
dgst dh dhparam dsa dsaparam  
enc engine errstr gendh gendsa  
genrsa nseq ocsp passwd pkcs12  
pkcs7 pkcs8 prime rand req  
rsa rsautl s\_client s\_server s\_time  
sess\_id smime speed spkac verify  
version x509

Message Digest commands (see the `dgst’ command for more details)  
md2 md4 md5 mdc2 rmd160  
sha sha1

Cipher commands (see the `enc’ command for more details)  
aes-128-cbc aes-128-ecb aes-192-cbc aes-192-ecb aes-256-cbc  
aes-256-ecb base64 bf bf-cbc bf-cfb  
bf-ecb bf-ofb cast cast-cbc cast5-cbc  
cast5-cfb cast5-ecb cast5-ofb des des-cbc  
des-cfb des-ecb des-ede des-ede-cbc des-ede-cfb  
des-ede-ofb des-ede3 des-ede3-cbc des-ede3-cfb des-ede3-ofb  
des-ofb des3 desx rc2 rc2-40-cbc  
rc2-64-cbc rc2-cbc rc2-cfb rc2-ecb rc2-ofb  
rc4 rc4-40 rc5 rc5-cbc rc5-cfb  
rc5-ecb rc5-ofb