Use of BlowFish Encryption Algorithm in php

1 <? Php
2
3 $ cipher = mcrypt_module_open (MCRYPT_BLOWFISH, '', MCRYPT_MODE_CBC ,'');
4
5 // The block-size of the Blowfish algorithm is 64-bits, therefore our IV
6 // is always 8 bytes:
7 $ iv = '000000 ';
8
9 $ key256 = '1234567890123456abcdefghijklmnop ';
10 $ key128 = '123 ';
11
12 printf ("iv: % s \ n", bin2hex ($ iv ));
13 printf ("key256: % s \ n", bin2hex ($ key256 ));
14 printf ("key128: % s \ n", bin2hex ($ key128 ));
15
16 $ cleartext = 'the quick brown fox jumped over The lazy dog ';
17 printf ("clearText: % s \ n", $ cleartext );
18
19 // Do 256-bit blowfish encryption:
20 // The strengh of the encryption is determined by the length of the key
21 // passed to mcrypt_generic_init
22 if (mcrypt_generic_init ($ cipher, $ key256, $ iv )! =-1)
23 {
24 // PHP pads with NULL bytes if $ cleartext is not a multiple of the block size ..
25 $ cipherText = mcrypt_generic ($ cipher, $ cleartext );
26 mcrypt_generic_deinit ($ cipher );
27
28 // Display the result in hex.
29 printf ("256-bit blowfish encrypted: \ n % s \ n", bin2hex ($ cipherText ));
30}
31
32 /// 128-bit blowfish encryption:
33 if (mcrypt_generic_init ($ cipher, $ key128, $ iv )! =-1)
34 {
35 // PHP pads with NULL bytes if $ cleartext is not a multiple of the block size ..
36 $ cipherText = mcrypt_generic ($ cipher, $ cleartext );
37 mcrypt_generic_deinit ($ cipher );
38
39 // Display the result in hex.
40 printf ("128-bit blowfish encrypted: \ n % s \ n", bin2hex ($ cipherText ));
41}
42
43 //-------
44 // Results
45 //-------
46 // You may use these as test vectors for testing your Blowfish implementations...
47 //
48 // iv: 3132333435363738
49 // key256: 313233343536373839303132333435364142434445464748494a4b4c4d4e4f50
50 // key128: 31323334353637383930313233343536
51 // clearText: The quick brown fox jumped over the lazy dog
52 //
53 // 256-bit blowfish encrypted:
54 // bytes
55 //
56 // 128-bit blowfish encrypted:
57 // bytes
58
59?>
60