BlowFish加密算法在php的使用

 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 =  '12345678';
 8     
 9     $key256 = '1234567890123456ABCDEFGHIJKLMNOP';
10     $key128 = '1234567890123456';
11     
12     printf("iv: %s\n",bin2hex($iv));
13     printf("key256: %s\n",bin2hex($key256));
14     printf("key128: %s\n",bin2hex($key128));
15     
16     $cleartext = 'The quick brown fox jumped over the lazy dog';
17     printf("clearText: %s\n\n",$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\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\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     // 276855ca6c0d60f7d9708210440c1072e05d078e733b34b4198d609dc2fcc2f0c30926cdef3b6d52baf6e345aa03f83e
55     // 
56     // 128-bit blowfish encrypted:
57     // d2b5abb73208aea3790621d028afcc74d8dd65fb9ea8e666444a72523f5ecca60df79a424e2c714fa6efbafcc40bdca0    
58     
59 ?>
60