mcrypt_generic vs mcrypt_encrypt

Question

在PHP中进行加密时,有没有人知道mcrypt_generic和mcrypt_encrypt之间的区别？

Answer 1

mcrypt_encrypt()结合了几种方法的功能,而mcrypt_generic()必须在一定的其他mcrypt_*调用序列中调用.mcrypt_generic()如果您需要较低级别API的灵活性,则可以使用,而mcrypt_encrypt()充当更高级别的实用程序.

PHP文档中的这个示例显示了两种API方法之间的良好比较.它指的是mcrypt_ecb(),但为了这个比较的目的,你可以认为它类似于mcrypt_encrypt().

来自http://us.php.net/manual/en/mcrypt.examples.php

$key = "this is a secret key";
$input = "Let us meet at 9 o'clock at the secret place.";

$encrypted_data = mcrypt_ecb (MCRYPT_3DES, $key, $input, MCRYPT_ENCRYPT);

要么:

$key = "this is a secret key";
$input = "Let us meet at 9 o'clock at the secret place.";

$td = mcrypt_module_open('tripledes', '', 'ecb', '');
$iv = mcrypt_create_iv (mcrypt_enc_get_iv_size($td), MCRYPT_RAND);
mcrypt_generic_init($td, $key, $iv);
$encrypted_data = mcrypt_generic($td, $input);
mcrypt_generic_deinit($td);
mcrypt_module_close($td);