41 lines
958 B
PHP
41 lines
958 B
PHP
<?php
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if(function_exists('mcrypt_encrypt') && defined('MCRYPT_MODE_CFB')) {
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class MCryptWrapper {
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public $cipher, $key, $iv, $key_size, $block_size;
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function __construct($cipher) {
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$this->cipher = $cipher;
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$this->key_size = mcrypt_module_get_algo_key_size($cipher);
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$this->block_size = mcrypt_module_get_algo_block_size($cipher);
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$this->iv = str_repeat("\0", mcrypt_get_iv_size($cipher, 'ncfb'));
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}
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function getBlockLengthInBytes()
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{
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return $this->block_size;
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}
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function getKeyLength() {
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return $this->key_size << 3;
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}
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function setKey($key) {
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$this->key = $key;
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}
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function setIV($iv) {
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$this->iv = $iv;
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}
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function encrypt($data) {
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return mcrypt_encrypt($this->cipher, $this->key, $data, 'ncfb', $this->iv);
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}
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function decrypt($data) {
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return mcrypt_decrypt($this->cipher, $this->key, $data, 'ncfb', $this->iv);
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}
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}
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}
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