Mcrypt ciphers
Mcrypt Funções
Mcrypt
PHP Manual

# Exemplos

Mcrypt can be used to encrypt and decrypt using the above mentioned ciphers. If you linked against libmcrypt-2.2.x, the four important mcrypt commands (mcrypt_cfb(), mcrypt_cbc(), mcrypt_ecb(), and mcrypt_ofb()) can operate in both modes which are named `MCRYPT_ENCRYPT` and `MCRYPT_DECRYPT`, respectively.

Exemplo #1 Encrypt an input value with TripleDES under 2.2.x in ECB mode

`<?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);
?>`

This example will give you the encrypted data as a string in $encrypted_data.

If you linked against libmcrypt 2.4.x or 2.5.x, these functions are still available, but it is recommended that you use the advanced functions.

Exemplo #2 Encrypt an input value with TripleDES under 2.4.x and higher in ECB mode

`<?php
$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);
?>`

This example will give you the encrypted data as a string in $encrypted_data. For a full example see mcrypt_module_open().

Mcrypt ciphers
Mcrypt Funções
Mcrypt
PHP Manual